eChapters

Systematic management of plant diseases dates back to 1885 with the invent of Bordeaux mixture by Milardet. Thereafter, a number of contact and systemic fungicides have been reported over the years for the management of various plant pathogens, of which many have become obsolete and many are still being used with excellence. However, the ecological hazards caused by the chemical fungicides have prompted scientists to search for other avenues of crop protection. Most of the conventional chemical and biological plant protection procedures, as well as the use of disease-resistant cultivars, tend towards the direct control of pests and diseases by their elimination. But these practices generally and particularly in case of monoculture crops like rice, raise problems. The risk of developing pesticide resistance in plant pathogens is enhanced by the long term use of the same chemical. The resistance genes of the plants can also be overcome by changes in the pathogens. Therefore the situation demands development of new strategies for plant protection which can supplement the use of resistance breeding and chemical control.

Abstract

Plant roots influence the biological, chemical and physical properties of rhizosphere soil. These effects are a consequence of their growth, their activity and the exudation of organic compounds from them. There is now considerable scope for the new ideas to be extended to the rhizosphere. The role of soil microorganisms in sustainable productivity has been well construed. In recent years, root inhabiting (rhizozosphere) bacteria (rhizobacteria) is gaining importance. The beneficial effects of plant growth promoting rhizobacteria (PGPR) has been variously attributed to their ability in improving the crop production, protection against phytopathogens, soil health and environmental quality. However, there is a need for isolation, identification and improvement of potent PGPR’s to utilize them ultimately as promising bio-inoculants. This review embodies some recent developments to evolve strategies for the better biotechnological exploitation of PGPR’s.

Abstract

Surveys made systematically in different remote places of Tamil Nadu brought to light more than 1000 indigenous techniques adopted for pest control in various crops of agriculture, horticulture and store grains. Target animals included array of insect species and animal pests namely rodents, mites, molluscs and microbes like nematodes and viruses. Various kinds of plant species reveal their modes of action distinctly.

INTRODUCTION

Plant diseases need to be managed for maintaining the quality and abundance of food, feed, and fiber produced by growers around the world. Different approaches may be used to prevent, mitigate or control plant diseases. Beyond good agronomic and horticultural practices, growers often rely heavily on chemical fertilizers and pesticides. Such inputs to agriculture have contributed significantly to the spectacular improvements in crop productivity and quality over the past 100 years. However, the environmental pollution caused by excessive use and misuse of agrochemicals, as well as fear-mongering by some opponents of pesticides, has led to considerable changes in people’s attitudes towards the use of pesticides in agriculture. Today, there are strict regulations on chemical pesticidal use, and there is political pressure to remove the most hazardous chemicals from the market.

Vegetables have got an important place in agriculture development, human diet and economy of the country. All the developed and developing countries realized the importance of vegetables an essential diet due to medicinal and nutritional value for human health. There is a steady upward trend in vegetable production. China is ranking first in the world and currently produces 237 million tonne of vegetables. India has made a quantum jump in vegetable production securing the second position in the world. The total production of vegetable is more than 91 million tonne in the country. Diseases and pests are the most important factors for low vegetable production. Various fungi, bacteria, viruses, phytoplasmas, nematodes and weeds are responsible for causing diseases in vegetables resulting heavy reduction in yield and quality.

On August 6, 1945, the most dreadful among the weapons of mass destruction – the atom bomb – was dropped in the civilian area of Hiroshima. Three days later, another atom bomb was dropped in Nagasaki. In July 1955, Bertrand Russell and Albert Einstein issued their famous manifesto seeking the abolition of nuclear weapons and appealing to all inhabitants of Planet Earth:
 
Remember your humanity, and forget the rest. If you can do so, the way is open to a new Paradise; if you cannot, there lies before you the risk of universal death.

In 1957, the Russell-Einstein Manifesto led to the birth of the Pugwash Conferences on Science and World Affairs, an organisation devoted to the causes of ending the nuclear peril and reminding scientists of their ethical responsibility for the consequences of their discoveries, particularly in the area of nuclear threat to human survival.

An ancient Chinese proverb says

If you are thinking one year ahead, plant rice
If you are thinking ten years ahead, plant trees
If you are thinking hundred years ahead, educate the people

Subramanya Bharati, a great Tamil poet, wrote decades ago that nutrition and education were the two legs of a human being — nutrition for the body and education for the mind. We must, therefore, foster a movement for integrating academic excellence and social relevance in the curricula of our educational institutions. Our universities should promote the growth of the science of ecotechnology, which is the product of the integration of traditional knowledge with frontier science. This will need a mind-set change in relation to the knowledge and wisdom of our tribal and rural families.

In the 1990s, I developed the Iwokrama Rain Forest Programme, which represents the world’s largest adventure in the sustainable management of rainforests. The local Amerindian population welcomed me to Iwokrama with a song, which translates thus:

Bhutan has developed the concept of Gross National Happiness (GNH) as a substitute for Gross Domestic Product (GDP). In this theory, GNH comprises spiritual and cultural values, including love of sport, music, dance and spiritual activities. This is a good departure from measuring happiness purely from the view point of money. I would like to elaborate on four pillars that are necessary to uphold sustainable human happiness.

Ecology

There is an increasing awareness of the need for adopting sustainable lifestyles which will not make a heavy demand on our life-support systems of land, water, biodiversity, forests, oceans and climate. In his book titled World on the Edge.1 Lester Brown has described how we still have time to prevent environmental and economic collapse. Recent calculations on the ecological footprint each one of us is leaving behind shows that our per capita consumption of natural resources is exceeding the biocapacity of our earth. Soon we will need two planets to meet the growing demand for land, water, forests and biodiversity. In this context, we should keep in view what Mahatma Gandhi said long ago: 

Norman Borlaug’s early upbringing in an Iowa farm and his experience of hardship during the US Depression of the early 1930s instilled in him the desire to bring science to address the problems of low farm productivity, poverty and hunger. After completing his Ph.D degree in Plant Pathology at the University of Minnesota in 1942, he joined the Rockefeller Foundation’s agricultural programme in Mexico, leading to the birth of the International Maize and Wheat Improvement Center (CIMMYT). There he began his work on wheat, concentrating on the control of stem, stripe and leaf rusts, the important diseases of the crop. He introduced a multi-pronged approach to manage the rust fungus, including the development of composite varieties characterised by phonotypic identity but genotypic diversity with reference to resistance to different races of the pathogen, an approach conferring enduring resistance as a result of reduced pressure on the fungus to mutate and create more virulent strains.

The country is at long last becoming sensitive to the serious consequences of the growing rural-urban divide in terms of investment, infrastructure and opportunities for income and employment. The rural-urban divide also leads to an expanding rich-poor divide. Since crop and animal husbandry, fisheries, forestry, and agro-processing are the main sources of rural livelihoods, the current agrarian crisis is adding to the problems of hunger, poverty and unemployment. According to the Union Planning Commission, we are off-track in achieving most of the UN Millennium Development Goals. A major cause for the growing rich-poor divide both between and within nations is unequal access to modern technology. Technology helps to achieve a paradigm shift from unskilled to skilled work and thereby move large numbers of the rural poor from the primary to the secondary and tertiary sectors of economic activity. If technology has been a major factor in promoting economic and social divides in the past, the challenge now lies in enlisting technology as an ally in the movement for economic, gender and social equity.

During his visit to India, President Barak Obama pointed out that our country is fortunate to have a youthful population with over half of the total population of 1.2 billion being under the age of 30. Out of the 600 million young persons, over 60 per cent live in villages. Most of them are educated. Gandhiji considered the migration of educated youth from villages to towns and cities as the most serious form of brain drain adversely affecting rural India’s development. He therefore stressed that we should take steps to end the divorce between intellect and labour in rural professions.

The National Commission on Farmers (NCF)(2004-06) emphasised the need for attracting and retaining educated youth in farming. The National Policy for Farmers, placed in Parliament in November 2007, includes the following goal of the new policy:

To introduce measures which can help to attract and retain youth in farming and processing of farm products for higher value addition, by making farming intellectually stimulating and economically rewarding.

The National Food Security Bill 2011, which is now on the website of the Union Ministry of Food and Consumer Affairs for public comments, aims to make the Right to Food a legal right. During the last seven years, the country has witnessed a transition from political patronage to legal entitlements in the case of education, information, work and land rights in tribal areas. When finally enacted, the Food Security Bill will be the brightest jewel in the crown of Indian democracy. Therefore, public scrutiny of the draft Bill is important. The draft Bill mentions that its aim is “to provide for food and nutritional security in human life-cycle approach by ensuring access to adequate quantity of quality food at affordable prices, for people to live a life with dignity”. Unfortunately the Bill is its present form will not be able to fulfill this inspiring objective.

The legal commitment contained in the Bill implies that every child, woman and man should have physical and economic access to balanced diet on the basis of a life-cycle approach, i.e., from conception to cremation. Nutrition security involves access not only to the needed calories and protein, but also to micro-nutrients like iron, iodine, zinc, vitamin A, and vitamin B12. In addition, clean drinking water, sanitation and primary health care are essential for ensuring that food is properly assimilated in the body.

The post-independence history of our agriculture can be broadly grouped into four periods. Before describing them, I should mention that during the colonial era famines were frequent and Famine Commissions were abundant. The growth rate in food production from 1900 to 1947 was hardly 0.1 per cent. Most of the important institutional developments in agriculture emanated from the recommendations of Famine Commissions. The great Bengal Famine of 1942-43 provided the backdrop to India’s independence. It is to the credit of Independent India that famines of this kind have not been allowed to occur, although our population has grown from 350 million in 1947 to over a billion now.

‘To a people famishing and idle, the only acceptable form in which God can dare appear is work and promise of food as wages’ — these were the words of Mahatma Gandhi when he was healing the wounds arising from the Hindu-Muslim divide at Naokhali in 1946. He thus stressed the symbiotic bonds among work, income and food security.
 
Eradication of hunger and poverty is also the first among the UN Millennium Development Goals, which in my view represent a Global Common Minimum Programme for human security and well-being.
 
Achieving this goal is fundamental for achieving the other goals relating to education, gender equality, child mortality, control of HIV/ AIDS, malaria and other diseases and, above all, environmental sustainability. Unfortunately, progress in the reduction of hunger and poverty is poor in most developing countries excepting a few like China. FAO estimates that as a result of the rise in the prices of basic staples, about 75 million more people have been added to the list of those going to bed hungry during 2007. As a single nation, we in India have the largest number of malnourished persons in the world.

The pros and cons of wheat imports are now a matter of public, political and media concern and debate. I have been quoted as both favouring imports and opposing it. Since this issue is a complex one with short- and long-term implications, I would like to explain my personal position.

The wheat import plan announced by the Government of India is in response to the need for maintaining adequate food stocks both for the purpose of food security and for feeding the public distribution system (PDS). Following the Wheat Revolution in 1968, Indira Gandhi decided to build a sufficient buffer stock of foodgrains under government control in order to ensure that the basic staples are available at reasonable prices even under conditions of unfavourable monsoon. She was also deeply conscious of the linkage between food security and sovereignty in foreign policy. Maintaining adequate food reserves is an absolute must from the point of view of avoiding both panic purchase and famines, particularly at times when there are indications of aberrant monsoon behaviour. Some years ago the Government of India had over 60 million tonnes of foodgrain reserves and substantial quantities were exported to reduce the cost of maintaining stocks of that order.

The goal of food for all can be achieved only through sustained efforts in producing, saving and sharing food grains.

The Supreme Court of India has rendered great service by arousing public, professional and political concern about the co-existence of rotting grain mountains and mounting hungry mouths. In several African countries hunger is increasing because food is either not available in the market, or is too expensive for the poor. Food inflation is showing no signs of abating. In our country, chronic hunger is largely poverty induced. The progress made in achieving the UN Millennium Development Goal No. 1, namely, reducing hunger and poverty by half by the year 2015, has been far from satisfactory and the available data indicate that we may have years and years to go before we achieve this target. Globally, the number of persons going to bed hungry has increased from 800 million in the year 2000 to over one billion. The position is likely to get worse in the near term, since the prices of wheat, rice and maize are going up in the global market. Adverse growing conditions in Russia, Canada and Australia are partly responsible for the recent escalation in grain prices. Nearer home, Pakistan is recovering from serious floods. According to a recent UN report, 3.2 million ha of standing crops and 200,000 heads of livestock have been lost. 

The President of India, in her address to both Houses of Parliament on 4 June 2009 announced:
 
My Government proposes to enact a new law — the National Food Security Act — that will provide a statutory basis for a framework which assures food security for all. Every family below the poverty line in rural as well as urban areas will be entitled, by law, to 25 kilograms of rice or wheat per month at Rs. 3 per kilogram. This legislation will also be used to bring about broader systemic reform in the public distribution system.

Since then, various arms of government as well as civil society organisations have been working on methods of redeeming this pledge.  The National Advisory Council (NAC) headed by Sonia Gandhi has recently provided a broad framework for achieving the goal of food for all and forever.  The suggestions of NAC include the initiation as soon as possible of special programmes all over the country to insulate from hunger and malnutrition pregnant and nursing mothers, 0-3-years-old infants, street children, destitutes, old and infirm persons, patients suffering from HIV/AIDS, tuberculosis and leprosy, physically or mentally handicapped persons and other disadvantaged citizens.

Pranab Mukherjee in his budget speech delivered on 26 February 2010 announced: ‘We are now ready with the draft Food Security Bill which will be placed in the public domain very soon.’  Although no official draft has been placed on the website of the concerned Ministry, several leading organisations and individuals have questioned the adequacy of the steps proposed to be taken under the Bill for achieving the goal of a hunger-free India.  Based on Article 21 of the Constitution, the Supreme Court of India has rightly regarded the right to food as a fundamental requirement for the right to life.  Many steps have been taken since Independence to adopt Mahatma Gandhi’s advice for an antyodaya approach to hunger elimination. In spite of numerous measures and social safety net programmes, the number of undernourished persons has increased from about 210 million in 1990-92 to 252 million in 2004-06.  About half of the world’s under-nourished children are in India.  Also, there has been a general decline in per capita calorie consumption in recent decades.  Grain mountains and hungry millions continue to co-exist.

Biodiversity provides the building blocks for sustainable food, health and livelihood security systems. It is the feedstock for both the biotechnology industry and a climate-resilient farming system. Because of its importance for human well-being and survival, a Convention on Biological Diversity (CBD) was adopted at the UN Conference on Environment and Development held at Rio de Janeiro in 1992. The Convention’s triple goals are conservation, sustainable use, and equitable sharing of benefits. CBD defines biological diversity as follows:

Variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are part; this includes diversity within species, between species and of ecosystems.

Demographic explosion, environment pollution, habitat destruction, enlarging ecological footprint, widespread hunger and unsustainable lifestyles, and potential adverse changes in climate all threaten the future of human food, water, health and livelihood security systems. 2010 appears to mark the beginning of uncertain weather patterns and extreme climate behaviour. Events like temperature rise, drought, flood, coastal storms and rise in sea level are likely to present new challenges to the public, professionals and policy makers. Biodiversity has so far served as the feedstock for sustainable food and health security and can play a similar role in the development of climate-resilient farming and livelihood systems. Biodiversity is also the feedstock for the biotechnology industry. Unfortunately, genetic erosion and species extinction are now occurring at an accelerated pace due to habitat destruction, alien species invasion and spread of agricultural systems characterised by genetic homogeneity. Genetic homogeneity increases genetic vulnerability to biotic and abiotic stresses. To generate widespread interest in biodiversity conservation, the UN General Assembly has declared 2010 as the International Year of Biodiversity.

It was in 1968 that the term Green Revolution was coined by Dr. William Gaud of USA to describe advances in agriculture arising from productivity improvement. Even in 1968, I concluded that if farm ecology and economics go wrong, nothing else will go right in agriculture.  I expressed my views in the following words in my lecture at the Indian Science Congress Session held at Varanasi in January 1968:

Exploitive agriculture offers great dangers if carried out with only an immediate profit or production motive. The emerging exploitive farming community in India should become aware of this. Intensive cultivation of land without conservation of soil fertility and soil structure would lead, ultimately, to the springing up of deserts. Irrigation without arrangements for drainage would result in soils getting alkaline or saline. Indiscriminate use of pesticides, fungicides and herbicides could cause adverse changes in biological balance as well as lead to an increase in the incidence of cancer and other diseases, through the toxic residues present in the grains or other edible parts. Unscientific tapping of underground water will lead to the rapid exhaustion of this wonderful capital resource left to us through ages of natural farming.

The Food and Agriculture Organisation of the United Nations (FAO) has alerted developing countries about possible steep rises in food prices during 2011, if steps are not taken immediately to significantly increase the production of major food crops. According to FAO, ‘with the pressure on world prices of most commodities not abating, the international community must remain vigilant against further supply shocks in 2011’. World cereal production is likely to contract by 2 per cent and global cereal stocks may decline sharply. The price of sugar has reached a 30-year high, while international prices of wheat have increased by 12 per cent in the first week of December 2010 as compared to their November average.

The quantitative and qualitative dimensions of under- and malnutrition prevailing in our country are well known.  The Steering Committee of a high level panel of experts on food and nutrition set up under my chairmanship to advise the UN Committee on Food Security (CFS) has recently concluded that what we need urgently is a comprehensive, coordinated approach to tackling chronic, hidden and transitory hunger, and not piecemeal approaches.

The National Food Security Bill, 2011 designed to make access to food a legal right, is the last chance to convert Gandhiji’s vision of a hunger-free India into reality.

Mahatma Gandhi’s articulation of the role of food in a human being’s life in his speech at Noakhali, now in Bangladesh, in 1946 is the most powerful expression of the importance of making access to food a basic human right.  Gandhiji also wanted that the pathway to ending hunger should be opportunities for everyone to earn their daily bread, since the process of ending hunger should not lead to the erosion of human dignity.  Unfortunately, this message was forgotten after the country became independent in 1947, and government departments started referring to those being provided some form of social support as “beneficiaries”.  The designation “beneficiary” is also being applied to the women and men who toil for 8 hours in sun and rain under the Mahatma Gandhi National Rural Employment Guarantee Programme (MGNREGA).  Sixty-five years after Gandhiji’s Noakhali speech, we find that India is the home for the largest number of under- and malnourished children, women and men in the world.  There are more persons going to bed partially hungry now, than the entire population of India in 1947.

It was in April-May 1968 that the country witnessed the wonderful spectacle of large arrivals of wheat grain in the mandis of the Punjab like Moga and Khanna. Wheat production in the country rose to nearly 17 million tonnes that year, from the previous best harvest of 12 million tonnes. Indira Gandhi released a special stamp titled “Wheat Revolution” in July 1968, to mark this new phase in our agricultural evolution. The nation rejoiced at our coming out of a “ship to mouth” existence. Later in 1968, Dr. William Gaud of the U.S. referred to the quantum jumps in production brought about by semi-dwarf varieties of wheat and rice as a “Green Revolution.” This term has since come to symbolise a steep rise in productivity and, thereby, of production of major crops.

Wheat production this year may reach a level of 85 million tonnes, in contrast to the 7 million tonnes our farmers harvested at the time of Independence in 1947. I visited several grain mandis in Moga, Khanna, Khananon and other places in the Punjab in April 2011 and experienced concurrently a feeling of ecstasy and agony. It was heart-warming to see the great work done by our farm men and women under difficult circumstances when, often, they had to irrigate the fields at night due to lack of availability of power during the day.

Three years after the establishment of the Central Institute of Fisheries Education (CIFE), a global conference was held at Rio de Janeiro, Brazil, for promoting environmentally sustainable development in all spheres of human activity. At this UN Conference on Environment and Development, generally referred to as the Earth Summit, an Agenda 21 was adopted to provide guidelines for mainstreaming ecology in all major research and development programmes. In Agenda 21, pride of place has been given to the management of aquatic resources from both the quantitative and qualitative aspects. 2012 marks the twentieth anniversary of the Rio conference.  It will be useful to prepare a balance sheet indicating where we have succeeded and where we have failed in implementing Agenda 21 in the area of inland and marine fisheries, as well as integrated coastal zone management.

As it is well understood, food and drinking water are the first among the hierarchical needs of a human being. Growing population, expanding ecological footprint, diminishing per capita land and water availability, increasing biotic and abiotic stresses, and, above all, the prospects for adverse changes in temperature, precipitation and sea level as a result of climate change, emphasise the need for keeping issues relating to agriculture high on the professional, political and public agenda. The multiple roles of agriculture in food production, improving nutrition and health, and climate change mitigation are now well recognised scientifically, but are yet be integrated into coherent national policies and strategies. Opportunities for generating synergy among agriculture, nutrition and health are great and this conference is therefore a timely one.

Transgenic varieties combine genes from totally unrelated species. For example, we can now transfer genes for salinity tolerance to rice from mangroves. The recombinant DNA technology is part of the evolution of genetics starting with the rediscovery of Mendel’s Laws of Inheritance in 1900. In the early part of the twentieth century, various techniques like irradiation, use of chemical mutagens and doubling of chromosomes through colchicine treatment were adopted to develop novel genetic combinations.  Today such gene transfer can be done with both precision and ease through recombinant DNA technology. Both molecular marker-assisted breeding and gene transfer now play a very important role in developing genetic combinations to meet the challenges rising from biotic (i.e., pest and diseases) and abiotic (i.e., drought, flood, sea level rise, etc.) stresses. They will gain further importance in the emerging era of climate change. Varieties developed by marker-assisted selection are also eligible for certification under the protocol for products produced through organic farming.

On the basis of a proposal I had made three years ago, the Food and Agriculture Organisation of the UN (FAO) launched a Global Soil Partnership for Food Security and Climate Change Adaptation and Mitigation at a Multi-stakeholder Conference held in Rome in September 2011. Even with all the advances made in capture and culture fisheries, nearly 90 per cent of human food requirements will have to come from the soil. Land is becoming a diminishing resource for agriculture, inspite of the growing understanding that the future of food security will depend upon the sustainable management of land resources as well as the conservation of prime farm land for agriculture. The National Commission on Farmers emphasised in its report submitted in 2006 the urgent need for replacing the 1894 Land Acquisition Law with a twenty-first century legislation that safeguards the interests of farmers and farming.  Jairam Ramesh is to be complemented for introducing in Parliament a National Land Acquisition and Rehabilitation and Resettlement Bill which pays attention not only to acquisition, but also to the rehabilitation and resettlement of the affected families.

In 2009, the world celebrated the 200th anniversary of the life and work of Charles Darwin, a transformational scientist who brought about a revolution in our understanding of evolution.  Evolution through natural selection among living organisms leading to the survival of the fittest was a concept which was alien to Christian thought in Darwin’s time, as faith was strong in the divine creation of the living forms of our planet.  Evolution of higher forms of life, including human beings, from fish and other forms of living organisms was an accepted view in ancient Indian thought, as exemplified by the ten forms of manifestation on earth of the Hindu god Vishnu.

“Variety is the spice of life” is a common saying.  Variation is a must for selection to occur.  Today, we are confronted with the prospect of human-induced changes in climate, leading to adverse variations in temperature, precipitation, flood and sea level.  We will have to be prepared for facing the consequences of drought, flood and coastal storms more frequently.

The principle of common but differentiated responsibilities is the core of the many climate agreements arrived at so far, including the Kyoto Protocol (1997) and the Bali Plan of Action (2007).  The differentiated responsibilities aim to meet the special needs of developing countries for accelerated and equitable economic development.  Both at Copenhagen and Cancun, the industrialised countries proposed limiting the rise in mean temperature to 2ºC above normal.  Even this seems to be unattainable in the context of the present rate of emission of greenhouse gases (GHG).  Hence, the principle of common but differentiated impact of the 2º change in mean temperature is essential for prioritising climate victims. For example, small islands like Tuvalu in the Pacific Ocean, Maldives, Lakshadweep, and Andaman and Nicobar, as well as the Sunderbans in West Bengal, Kuttanad in Kerala and many other coastal locations will all face the prospect of submergence.  Floods will become more serious and frequent in the Indo-Gangetic plains.  Drought-induced food and water scarcity will become more acute. South Asia, sub-Saharan Africa and the small islands will be the worst victims.  In contrast, countries in the northern latitudes will benefit due to longer growing seasons and higher yields.

A climate-resilient agriculture, which we need urgently, will have to be based on a two-pronged strategy: maximising farm productivity and production during a normal monsoon period, and minimising the adverse impact of unfavourable weather as witnessed during 2009.  Unfortunately, we are yet to develop an anticipatory research and extension programme to minimise damage during unfavourable monsoon periods.  For example, the deficiency in rainfall during the southwest monsoon of 2009 was 23 per cent.  The growth in agriculture and allied sector GDP was minus 0.2.  The highest growth rate in agriculture GDP of 5.2 per cent was observed during 2005-06 when the growth in total GDP was 9.5 per cent.  Had we had a scientific monsoon management strategy, we could have minimised the loss in 2009-10.  Similarly, if we have a strategy for maximising the benefits of a good monsoon, we can hope to achieve at least 5 per cent growth rate during 2010-11 in agriculture and allied sectors.  In parts of China like the Yunnan province, which has experienced 60 per cent less rainfall than normal, there is a move to grow different crops together in the same field, thereby distributing the risk arising from monoculture. It is time to develop a pro-active monsoon management strategy.

How can we develop a sustainable water security system in an era of climate change and global warming ?  In my view, every country should develop a sustainable water security system with the following four major components.

Supply augmentation

The major sources of irrigation water are from rainfall, rivers, tanks, reservoirs and other surface water resources, groundwater, industrial and domestic effluents, and seawater.  Seawater comprises almost 97 per cent of the global water resource and is an important social asset.  With the melting of Arctic and Antarctic ice, sea level will go up with disastrous consequences. The tsunami of December 2004 gave a glimpse of what could happen in the future.  To augment supplies, we must harvest rainwater and store it carefully, both above and below ground.  Also, we should ensure that all waste water which emerges from industry and domestic use is purified and recycled.  Rainwater harvesting should become a way of life, so that it becomes everybody’s business.

There are reports in financial newspapers that the ongoing (2010) drought affecting nearly 200 districts in the country may not have much effect on GDP, since the farmers in the drought-affected areas contribute hardly 3 per cent to GDP.  It is sad that such a measure of the impact of drought on the lives and livelihoods of millions of rural families is even considered. It is this mindset, typical of the growing insensitivity to human suffering in our country, that is responsible for India being the home for the largest number of undernourished and malnourished children, women and men in the world.  No wonder we are finding it difficult to achieve the first among the UN Millennium Development Goals, namely, reducing hunger and poverty by half by 2015.  Unless we realise that agriculture in India is not just a food- producing machine, but is the backbone of the livelihood of over 60 per cent of our population, rural deprivation and suffering will not only continue to persist, but will get worse, leading to severe social unrest.

Managing the National Food Security System

Rajiv Gandhi understood the wisdom of Gandhiji’s doctrine that Gram Swaraj is the pathway to Purna Swaraj and launched the Panchayati Raj movement. Schedule 11 of Constitution Amendment 73 entrusts panchayats with the responsibility of managing natural resources and fostering sustainable agriculture. Representative democracy through elected members, one third of whom are women, and participatory democracy through Gram Sabhas, are powerful tools for ensuring a pro-nature, pro-poor, pro-women, and pro-livelihood orientation to all rural and agricultural development programmes.
 
The National Commission on Farmers has emphasised the need for community-managed food and water security systems promoted with the help and oversight of Gram Sabhas.  The Gram Sabha can serve as a Pani Panchayat to ensure that rainwater is not only harvested, but is used in a sustainable and equitable manner.

India’s Northeast region — one of natural beauty and cultural richness — is both a mega-biodiversity area as well as a “hot-spot” for genetic erosion. The rural population is around 82 per cent and depends largely on agriculture and allied sectors for work and income security. The forests harbour 8000 out of the 15,000 species of flowering plants occurring in the country. Of about 1300 species of orchids reported from India, the Northeast has the highest concentration with about 700 species. The species richness is highest in Arunachal Pradesh where over 5000 flowering plants occur and the lowest in Tripura with 1600 species. Bamboo is the lifeline of the Northeast and 63 out of 136 species found in India occur in this region. Sadly, however, 25 species of bamboo fall under the rare and endangered category. The region is also home to the eri and muga silkworms. The yak and the mithun are unique animals which are threatened by the spread of non-edible invasive species like Lantana, Eupatorium and Mekenia. The cultural diversity of this region is well known, with 225 tribes out of 450 in the country living here. 

Livestock and livelihoods are intimately linked in our country.  Mixed farming involving crop-livestock as well as sometimes fish integration has been both a way of life and a means to sustainable livelihoods.  Also, the ownership of the livestock is more egalitarian than that of land.  That is why in our ancient culture, livestock has been given a pride of place in the area of spiritual veneration and natural resources conservation.  Maharashtra is rich in its livestock resources and has also a long coastline with a wide range of living aquatic resources.

The crop-livestock integrated farming system provides an opportunity for promoting organic farming and restoration of soil health, and thereby of an ever-green revolution leading to an enhancement of productivity in perpetuity without associated ecological harm.  It also strengthens household nutrition security.  The country as a whole has over 500 million farm animals.  However, grazing land has been reduced to less than 5 per cent of the arable land area.  Village common property resources, which used to provide fodder and shelter to farm animals, have been overexploited.  Consequently, our farm animal productivity is very low.

Mahatma Gandhi mentioned to those who wanted to serve rural India that their most useful contribution would be in linking brain with brawn.  Only such a combination of intellect and labour can lead to sustainable advances in the productivity and profitability of agricultural holdings.  West Bengal’s Bidhan Chandra Krishi Vishwavidyalaya (BCKV), almost four decades old, is a fitting example of such work.  It has helped the development of two more universities in the State, namely, West Bengal University of Animal & Fishery Sciences and the Uttar Banga Krishi Viswavidyalaya.  It is important that these three universities function like a consortium of educational institutions mandated to help in achieving agricultural advance, agrarian prosperity and rural transformation in the State.

Livestock and livelihoods are intimately related in our country.  The ownership of livestock is more egalitarian than that of land.  Similarly, West Bengal is full of fish ponds.  It is important that cultivation of crops like rice is done by adopting integrated pest management procedures, so that the water in which fish is cultivated does not get polluted with pesticides.

Mamata Banerjee has raised the important issue of land use and acquisition for public, political, professional and media debate. With increasing population pressure on land, this issue deserves careful consideration and rational discussion. The Singur dilemma in a wider sense relates to both land use policy and norms of compensation for land acquired by government for non-farm purposes. Land conflicts are also spreading in other parts of our country, as far example where land is needed for establishing Special Economic Zones (SEZs). The Maharashtra Government has wisely adopted the policy of holding a referendum to seek the views of farmers and others who will be dispossessed of their land for meeting the needs of SEZs. Pro-active consultations will help to avoid difficulties later. Water conflicts are also affecting important irrigation projects. Land conflicts are likely to do the same and may affect the balanced growth of the primary, secondary and tertiary sectors of the economy. How can we deal with this situation in a manner which leads to a win-win outcome for all the stakeholders ?

During the last 21 years, the scientists and scholars of the M.S. Swaminathan Research Foundation (MSSRF) have been working on the design and implementation of projects which could have a large extrapolation domain in respect of imparting a pro-nature, pro-poor, pro-women and pro-sustainable livelihood orientation to technology development and dissemination. I would like to write about a few of the MSSRF initiatives, which have now become state, national and global programmes.

Mahila Kisan Sashaktikaran Pariyojana: Strengthening the role of women in agriculture

MSSRF initiated the Mahila Kisan Sashaktikaran Pariyojana in the Vidarbha region of Maharashtra in 2007 for empowering women farmers, including the widows of farmers who had committed suicide, in areas related to enhancing the productivity, profitability and sustainability of small-scale rain-fed farming. The empowerment measures incorporated access to technology, credit, inputs and market.

The term Geographical Indications (GIs) attained significant status in trade agreement negotiations after the establishment of World Trade Organization (WTO).Under WTO, Agreement on the Trade Related aspects of Intellectual Property Rights (TRIPs) sets forth standards to regulate international intellectual property protection and enforcement and establishes international minimum standards for GIs. Geographical Indications identify goods that have a specific geographical origin and possess a quality, reputation or other characteristics which are due to that place of origin. Geographical Indications are now widely accepted as valuable marketing tools in the global economy and are useful to protect rights of communities. Geographical Indications are not granted to individuals but are granted to the group/association of producers as the symbol of collective ownership.

Biology, the science of living organisms, is linked with microscopes, test tubes and Petri dishes, but these conventional methods are changing with the advent of Bioinformatics. Due to the advancement in molecular biology and genome sequencing techniques, there is an overflow of biological information. This flood of information has led to a requirement for computerized databases to store and organize the data and to design specialized computational tools to view and analyze the data. Accordingly Bioinformatics can be defined as conceptualizing biology in terms of macromolecules (in the sense of physical-chemistry) and then applying “informatics” techniques (derived from disciplines such as applied maths, computer science and statistics) to understand and organize the information associated with these molecules on a large-scale (Tramontano, 2007).

Very little is known about the basic principles governing the chemistry of flavour or fragrance. In English, the term aroma chemicals is used for both fragrance and flavour compounds. Any compound with a sufficiently high vapour pressure will have an odour and this is normally of the molecular weight of around 300, a relatively low polarity granted (Frater et al., 1998). Generally only compounds with pleasant smell are considered to fall under the realm of fragrance chemistry, but purified individual components from a mixture may have a malodour. Almost all ancient civilizations had their tradition of making fragrances from natural materials, mostly of plant origin, but also of animal origin – these are mostly essential oils, exudates, balsam and resins (Arctander, 1969).
 
It was in the latter half of the 19th century that synthetic fragrance chemicals were experimented upon and brought into the market, examples being coumarin (Fig. 1) (in the year 1866), salicylaldehyde (Fig. 2) (1876), vanillin (Fig. 3) (1876), phenylacetaldehyde (Fig. 4) (1883), piperonal (Fig. 5) (1890), musk xylol (Fig. 6) (1891) and b-ionone (Fig. 8) (1893) (Frater et al., 1998).

Reasons for serious concern for food security in developing countries are, increasing food demand for the rapidly growing population, decline in productivity in high productive areas due to ‘Green revolution’ fatigue, and increasing vulnerability of agriculture to potential climate change. Climate scientists predict that global warming will make arable land in many developing countries less productive or unusable. Of all the parameters, abiotic environmental stresses contribute significantly to reduction in potential yield (Flowers and Yeo, 1995). Abiotic stresses arise from extremes of climate. The stress factors especially drought and salinity negatively effect plant growth and development, salt stress being one of the most serious environmental factors limiting productivity of crop plants (Ashraf, 1999). Therefore, extensive research into plant salt tolerance was carried out, with the aim of improving resistance of crop plants. With a large majority of the world’s population relying on crops like barley, maize and rice to survive, crop salt tolerance is globally important.

In general terms, dormancy can be defined as a period during the biological cycle of the plant in which growth of the whole organism (seed) or a plant organ (bud, tuber, corm etc.) is suspended eventhough the environmental conditions for growth may be favourable. More specifically, dormancy refers to a condition in which growth is inhibited by a restriction of essential metabolic processes, such as water uptake, gas exchange and cell division, either as a result of endogenous dormancy-controlling factors or in response to exogenous factors such as changes in the environment. It is distinct from a transient state of quiescence or rest imposed by an unfavourable environment in that dormancy persists even when the environment becomes favourable for growth whereas quiescence ceases.

For wild plants, dormancy has evolved as a means of enabling the plant to endure periods of stress due to drought or low temperatures and is therefore critical for the survival of the species. In cultivated arable or vegetable crops, breeding has generally led to a loss of dormancy or a reduction in the length of the dormant period. In arboreal crops of temperate climates, however, bud dormancy is still an essential feature of the annual growth cycle of the tree.

India produces 9.2% of world’s vegetables and fruits, nearly 109 million tons of vegetables and 57.69 million tons of fruits. The production of horticultural commodities is expected to grow to 300 million tons in near future (Kaur, 2008). India accounts for 18.2% of global trade in vegetables and 0.5% in fruits. The overall food wastages are very high amounting to around Rs. 10.4 lakh million. India wastes more fruits and vegetables than what U.K consumes. It is estimated that cumulative wastage of fruits and vegetables, on the farm, during procurement, storage and at the retail outlets, is worth about Rs.422250 million. 

Grafting is a horticultural technique. It is used commercially for many woody plants and some herbaceous plants. The purposes of grafting include asexual propagation, obtaining resistance to soil borne diseases, nematodes and unfavorable conditions, and improving fruit quality. Although there are advantages to grafting, graft incompatibility often prevents its practical use. Graft incompatibility occurs when the combination of scion and rootstock is inappropriate. The enormous range of genotype varieties used in grafting results in a wide range of physiological, biochemical and anatomical interactions between graft partners. Therefore, the causes and mechanisms of graft incompatibility vary according to graft combinations. Garner (1979) defined graft incompatibility as the failure to unite into a strong union, the failure to grow in a healthy manner, or premature death, when such failures could be attributed to differences between rootstock and scion.
 
The purpose of this review is to understand graft incompatibility as an aid to solving graft incompatibility problems. The symptoms and types of graft incompatibility are described, the causes and mechanisms of graft incompatibility are explored, and directions for future research are identified.

Micronutrients play an active role in the plant metabolic processes from cell wall development to respiration, photosynthesis, chlorophyll formation, enzyme activity, hormone synthesis, nitrogen fixation, etc. Micronutrient requirements of crops are relatively small. Use of chemical fertilizers with accompanied changes in soil management practices resulted in steady decrease in micronutrient content in soil. The future of agriculture depends on sustainable management of land, water, flora, fauna and the atmosphere. In order to produce 240 m tones of food grains by the end of twentieth century, removal of major nutrients from soil will be to the tune of 7 m tones N, 2.7 m tones P2O5 and 11.2 m tones K2O. Similarly, a good amount of secondary (Ca, Mg, S) and micronutrients would also be removed proportionately which should be compensated through application of well rotten FYM or micronutrient fertilizers in soil.

Bioinformatics encompases the use of tools and techniques from three separate disciplines; molecular biology (the source of the data to be analyzed), computer science (supplies the hardware for running analysis and the networks to communicate the results), and the data analysis algorithms, which strictly define bioinformatics. So the list below incorporates events from these areas into a brief history of the field.

Entomology, a Greek word entomoV, entomos, “ that is cut in pieces or engraved/segmented”, hence “insect”; and -logia, logia -study, is the scientific study of insects , a branch of arthropodology. The arthropods made their appearance during the earliest Devonian period while humans appeared only in Quarternary. Insects possess an immense degree of evolutionary maturity as against man, account for more than two-thirds of all known organisms, date back some 400 million years, and have many kinds of interactions with humans and other forms of life on earth. Entomology is a speciality within the field of biology and it is rooted in all human cultures from prehistoric times.

In India, insects were known from Vedic era and records of insects in India were evident from India’s mythological epics, the Ramayana and Mahabharatha. 

Horticultural crops play an important role in Indian agricultural economy. Though only 2.4% of cultivated area is under these crops, they contribute about 21% to the Agricultural GDP. Though horticultural crops contribute more for the national economy, its contribution could be further increased by minimizing 30% loss of horticultural crops due to pests and diseases. Continuous and unrestricted use have dictated the need for development of ecologically safer pest management technologies. Among the non-chemical methods, resistant varieties, cultural practices, plant derivatives and biocontrol agents are important and these methods can be integrated successfully. In recent years, interest among regulatory authorities, agricultural advisors and growers has forced to seek for alternative solution of plant disease management. It has encouraged intensive research of microbial products as agents for plant disease management. This resulted in commercialization of a number of microbial biocontrol products.