eChapters

Saline Water Agriculture has been drawing interest as one of the solutions for limitation of world fresh water supply, farmland availability, salinity ingression and the pressing future need of food supply. The cultivation of salt-tolerant crops on saline soil and with saline waters has significant social and economic potential.

It is often argued that fresh water agriculture near rivers and ponds was invented because of the need to sustain people and communities. Saline water agriculture is going to be needed for sustaining our future generations and civilization.

Bioshields offer barriers of vegetation, shrubs, small and big trees and if integrated as a well designed system they can greatly help our coastal as well as inland areas. Though primarily looked at for coastal regions, under a broader definition Bioshields can play important role in semi-desert areas, hills, etc. also.

Why Bioshield?

Bioshields or Biobarriers can make a major contribution in minimizing the effects of storms, cyclones and Tsunamis and at the same time offer short and long term ecological and livelihood benefits.

The recent earthquake in Nepal brings back memories of 26th January 2001. While the nation was busy in celebrating Republic Day, an earthquake shattered Gujarat especially Kutch and Saurashtra regions. A large number of buildings and houses collapsed within moments. Thousands were injured and many lost their lives and many more became homeless.

Kutch received quick responses from all over the world and a large number of individuals, institutions, government and semi-government bodies, professional experts, religious and social organizations etc. sprang into action to bring back some normalcy in the lives. However, long-term rehabilitation program based on scientific planning is most vital after such disasters.

It is estimated that the country needs about 245mt of food grains, 30mt of sugar and jaggery, 7 lakh of tea, 1.7 lakh t of coffee, 10mt of vegetable oil and 17m bales of cotton. For realizing this, irrigated agriculture has to play an important role. To achieve this water use efficiency (WUE) in the irrigation sector has to be improved considerably as bulk of the available water is used in agriculture. But, with the ever-increasing population and industrialization problems, the demand for water by these sectors is bound to increase manyfolds in future. The requirement of water by different sectors during 2025 is estimated to be 105 m ham, which is 30 m ha m more than the present one. The share of water utilization for agriculture is expected to get reduced from the present percentage of 8~ to a value of 73 by 2025. Further, the demand for water for agricultural purposes is estimated to increase from 470 krrr’ to 740 krrr’ in a period of four decades (Table 1). During the same period there will be four­fold increase in the water demand for non-agriculture purposes.

Since many decades environmentalists have warned of perils of chemicalised sports grounds, golf courses and cricket fields. They warn that our health is inextricably linked to the widespread use of toxic chemicals and also complain about the non-availability of safe alternatives.
Eco-sustainable sports fields must use the methods : 
    ·    That do not pollute
    ·    That are environment-friendly and effective
    ·    That economize on the use of water and energy

Normally we associate our agriculture and food supply with farms and villages. The new trends of greener cities and urban and peri urban horticulture (UPH) are emerging very fast. Towns and cities in the world’s developing countries are growing at great speed. Ten years ago, an estimated 40 percent of the developing world’s population or 2 billion people lived in urban areas. Since then, their numbers have expanded twice as fast as total population growth, to more than 2.5 billion. By 2025, more than half the developing world’s population of 3.5 billion will be urban. Again most of the world’s fastest growing cities are in Asia and Africa with young population.

Indian Government has several developmental programmes to promote agriculture and rural sector. It includes Drought Prone Area Program, Antodaya Programme, Integrated Rural Development Programme, Hill Area Development Programme, Desert Development Programme, Intensive Jawahar Rojgar Yojna and Employment Assurance Scheme, Indira AwaasYojna, Integrated Waste Land Development Programme, National Food Security Mission, National Horticulture Mission, etc. Mahatma Gandhi National Rural Employment Guarantee Scheme (MGNREGS) has the main focus to provide guaranteed employment for 100 days in a year to every rural household. Since 2014, the Swachh Bharat Abhiyan has been a major initiative by the Government of India.

Reducing the input costs in farming, especially agrochemicals and improving the yields of farm products in environmentally sustainable way, is one of the most important challenges. World over, the understanding of alternative eco-friendly inputs and intelligent integration of such products with the farming practices are the areas which need to be emphasized, understood and demonstrated. Our experience of working with farmers in different regions has convinced us that they all are looking for alternative, eco-friendly and cost effective inputs and the only way to convince them is practical demonstrations. 
Eco safe farming is a global challenge and needs combined efforts of NGO_s and farmers bodies, private and public sector industries and scientists in the institutions and universities. There are many challenges and many success stories and some typical once are listed here.

Large quantities of crop residues are produced and if properly used, they can provide cost effective means for supplying organic matter, plant nutrients and improved soil health. The highly lignocellulosic nature of crop residues indicate their potential role in maintaining soil organic matter and enriching the soils with N-rich microbial biomass resulting from decompositions. However, their indiscriminate handling often burning leads to decline in soil health, air pollution and overall loss. Since most crop residues find use as feed and fuel, efficient recycling of the remaining amount can have very significant and positive effect.

Composting is organic matter that has been decomposed and recycled as fertilizer and soil conditioner. It is a natural process of decomposition and recycling of organic material into humus rich soil amendment.

At the simplest level, the process of composting requires making a heap of organic material sprinkled with water which break down to humus after a period of weeks or months. However, modern bio composting is a multi-step, closely monitored process with measured inputs of water, air and carbon and nitrogen rich (in proper C:N ratio) materials.

At an Agri Summit, I had a very difficult task to chair a session on “Sustainable Future”, with two well-known but extremely opposite personalities. On my left was a globally well-known environment activist talking about all the evils of chemical fertilizers and chemical pesticides. On my right was the President of Pesticide Association with equally strong views about how the chemical pesticides have greatly helped in feeding the hungry world. My task was further made difficult by a large lobby of green activists in the audience and also a number of seasoned industrialists with opposite views. Such a scenario is becoming increasingly common.

To many Bio Fertilizer is still an unclear term. Often they are identified as urban and rural organic wastes, plant extracts, organic components etc. However, Bio Fertilizer is mostly commonly referred to the use of soil micro organisms to increase the uptake and availability of plant nutrients.

Bio Fertilizer have gained a good deal of momentum and the industry after a slow start is now gaining more and more importance globally. The major reasons for this are that they:

Higher Farm Production with Lower Input Cost

There is a great need to reduce the input costs and at the same time improve the farm productivity in a sustainable manner. A model has been worked out based on a number of field demonstration studies in different parts of India, Africa and Far Eastern countries. A model in which input cost can be reduced by nearly 20 percent and at the same time the crop production can be enhanced upto 20 percent is possible and can be a boon to farmers in most parts of the world. This is the model, which can be easily adopted in an evolutionary way. As suggested by Jonathan Foley (BOX – 1), use of high-tech, precision farming systems, as well as approaches borrows from organic farming, we can boost farm productivity substantially.

African agriculture is in crisis, and Africa’s farmland is losing its fertility at an alarming rate. Farmers grow the same crops in the same fields year. They don’t fertilize, and they don’t terrace their fields. When the soil wears out, the clear a new piece of land (wwww.npr.org). N. Kozana Diamini Luma, the Chairperson of the African Union Commission has emphasized that ‘the year 2014 – the year of Agriculture in Africa’ will be used as an opportunity to accelerate the drive for food security. The major thrust for that has to be on ensuring that the farmers make their profession on economic activity that generate wellbeing for all in a sustainable manner (1, 2).

The words “Economy” and “Ecology” have the same root. Both these words are derived from Greek ‘Oikos’ means house or house holds and both imply thrifty economical way of dealing with valuable resources. However, for some reason we seem to find these two words coming opposite each-other in many situations.

The destruction and degradation of the environment has become the greatest problem of our century. Our survival will depend on how well we are able to redefine our technologies and our relationship with nature. We therefore need a new sustainable eco-agri revolution and a country like India is in an ideal situation to give a model for that. In the new economy, good ecology will be fundamental to good business.

It has been repeatedly proving that Science& Technology that is close and in harmony with nature is proving winner in the long run. If the past 60 years led to the Green Revolution in agriculture which often became Greed Revolution, the next 60 year should be the emergence of love for nature, diversity and Sustainable Green Revolution. The two goals – Sustainability and Productivity are inter-related.

It is also said that the main difference between the past and today is that our problems are truly global. We are also aware that globally and nationally the rich-poor divide is growing and though world produces enough food, nearly 800 million people remain food insecure. Among 8 millennium goals, eradication of poverty and hunger and environmental sustainability are perhaps the most prominent and complimentary.

In his classic book ‘The Ascent of Man’, Bronowski has written, “When I was a young man, we all thought that mastery came from man’s domination of his physical environment. Now we have learned that real mastery comes from understanding and moulding the living environment.” Our Biosphere, the living environment that supports us all, has problems and we humans are mainly responsible. We do not live ‘gently’ on the earth. The seven billion of us require air, water, food, energy, housing and amenities and we have developed the earth to provide them and have also created problems. That the problems exist are serious is the bad news. That we are recognizing them and that man has shown ability to organize and grow in ascending order from time to time is the good news.

Abstract

Agricultural produce, such as vegetables, flowers and some fruits capture higher market price if they can be produced ahead or later than the main crop season. The demand of such unseasonal products is particularly high in the fashionable markets of big cities. Good quality of the product is, however, an essential requirement to realise this price advantage. Modern technologies can pave the way to take the full advantage of high price realisation. Growing crops under protected covers is being popularised and the application of various approaches of greenhouse technology can further extend this advantage because it offers greater control over the production environment and timing of crops. There has been a consistent increase in area under greenhouse cultivation nationally and is turning out to be a useful technology for resource efficient agriculture. The types of greenhouse structures range from hi-tech climate controlled systems to very elementary trenches or solar greenhouses used in high altitude cold desert regions of the Himalayas. Greenhouse vegetable production on a commercial scale is a capital and labour intensive production system and requires proper planning for sustainable production. Higher yield, efficient resource use, earliness, off-season availability and superior quality is the hallmark of greenhouse grown vegetables. Greenhouse vegetable production can be done from very basic soil based planting to fully automated hydroponic or soilless systems. This production system requires specialised crops and cultivars which should meet the demand of high value markets.

Abstract

Vegetable crops are inherently rich sources of various health-promoting nutrients and thus they play an important role in balancing our daily diet. Being excellent source of vitamins and minerals, vegetables have a relatively variable nutrient content per unit of energy. These nutrients can be increased by proper selection of vegetables in our diet. Whereas their intrinsic quality maintains human health, the extrinsic quality has significance in determining acceptability by the consumer. Vegetables also have medicinal properties. These diversified and highly nutritive crops are of great importance in alleviating hunger and malnutrition. The present production of vegetable crops is, however, not enough to meet per capita daily dietary requirement as per dietitians’ recommendations. The vegetable production, therefore, need to be almost doubled by 2025 to meet requirement of ever increasing population from diminishing land, water and other natural resources. Although, there has been a trend of increase in production and productivity of vegetable crops since liberalization of seed trade in 1988 by Government of India, yet it has not been commensurate with the requirements. Compared globally, we are far behind in productivity of vegetable crops in spite of being second largest producer after China.

Abstract

Extreme weather conditions often cause considerable damage. Much of this damage can be mitigated if people are better prepared for impending disasters. Therefore, public authorities and private enterprises have been investing in Early Warning Systems (EWS). Environmental degradation and destruction of natural resources has been faced by humans and other organisms for hundreds of years. Some of these incidences have been caused by natural climatic and geologic processes and others by human activities. These natural disasters have been increasing over time due to factors such as urbanization, population growth, destruction of natural environment and climatic change. Biogenic and anthropogenic related environmental and natural resources degradation has direct economic and health impacts on affected regions. Land and water degradation as well as disasters such as floods and droughts have led to famine, hunger, disease, death and created many other problems. It is necessary, therefore, to keep focused on the ultimate goal of reducing disasters by all possible means. India must invest generously on infrastructure and resources for preparation of early warning systems and disaster preparedness.

Abstract

Invasion of field crops, orchards and waste-lands by weeds is a matter of concern for farmers and foresters because of the drag they inflict on productivity and the increase in cost of production involved in weed control. Science-based technologies offer workable and reliable recourse to minimizing and/or eliminating these losses to promote healthier and rewarding livelihoods. While studies have been conducted to combat brush-weed in waste-land and plantations, little work has been done on such aspects as biological control of weeds, development of herbicide resistance in weeds, and allelopathic interface of crops and weeds. In this chapter, attempt is made to assess the economics of weed management in major crops. Aspects of R&D on weed management that should be addressed for safeguarding yield in the future are highlighted with particular reference to situation in western Himalaya.

Abstract

Over the years, global climate change has negatively impacted the resources of western Himalayan region and the diversity of floral wealth has been endangered. The endangered livelihoods of agriculture based sector call for incorporating stress resistance by sustained effort that includes resort to infusion of new technologies. Biotechnology offers possible solutions to many of the intractable problems. Development and commercialization of transgenic crops have witnessed phenomenal growth in recent years. An array of traits viz. insect pest resistance, herbicide tolerance, abiotic stress tolerance, augmentation of nutritional qualities etc. have been targeted and successfully modified through plant genetic engineering. The global area of transgenic crops has seen a tremendous increase to attain 148 million hectares in 2010. Progress in understanding plant genome structure and function by high throughput characterization of genome, transcriptome, proteome and metabolome is providing new opportunities to deal with complex traits that result from interactions of a large number of genes. The other significant application of biotechnology in crop improvement has been “Marker Assisted Selection” (MAS). Development and integration of DNA based markers in the selection process has empowered the breeder to identify the desired genotypes without any interference of environmental effect or tissue specificity of expression. Cultivation of MAS derived crop varieties in the country bears testimony to the success of this technology.

Abstract

Livelihood of ~80% of rural inhabitants depends upon agriculture that relies upon the prevailing environmental conditions such as water availability and temperature. If unfavorable to the crops, these conditions would impact production and productivity leading to food-insecurity. Various abiotic stresses are generated due to the physiography that includes altitude, topography, edaphic factors, water availability and ecosystem degradation. In spite of the environmental limitations, crops have survived suggesting operation of relevant adaptive mechanisms in the native species. Indeed, novel genetic mechanisms were present and these could be utilized to improve the plant productivity under stress conditions. Also there are issues on the management of abiotic stresses, which need to be addressed. The chapter presents framework and policies on sustaining agriculture production under the situations of abiotic stress to ensure production sustainability by protecting livelihood of the inhabitants. Western Himalaya was deliberately chosen as the focus for discussion.

Abstract

Hills and mountains are an important agro-ecosystem, which have lagged  behind the plains in respect of agricultural development. The plains of India witnessed green revolution followed by white, yellow and blue revolutions, which not only increased production and productivity of food crops but helped in bringing about overall development that led to livelihood security in the rural India. The hills, however, remained technologically backward resulting in low agricultural productivity, which brought about livelihood insecurity in these areas. And this has happened despite the fact that a large number of top class institutions of the CSIR, ICAR, ICFRE, Atomic Energy 
Commission, GSI and BSI along with State Agricultural Universities have been present (in the region) and were engaged in developing technology relevant to agriculture and allied areas. However, these technologies did not reach to the end user i.e. the hill farmer for a variety of reasons. Therefore, technology development and dissemination have been accorded high priority by the state governments.

Abstract

The paper presents findings of a field study to determine the agricultural and socio-economic impact of climate change on the mountain farmers’ apple economy. The study investigates the positive and negative effects of climate change on mountain farmers’ economy. It revealed how mountain farmers in a valley were forced to abandon apple farming which destroyed their farm economy and at the same time how same climate change brought new economic opportunities. The study findings also indicate that opportunities brought by climate change seem to have a time scale. This research attempts to piece together evidence and aims to enhance our understanding of climate change impacts as observed by farming communities at very local levels. The growing threat of global warming and its effects and prevailing obscurities about the future of agriculture are all addressed in this investigation.

Abstract

The livelihood security of hill people is closely associated with hydrology of the region. The Himalayas possesses one of the largest reserve resources of freshwater in the form of snow and ice, thereby supporting livelihoods of millions of people. The physiographic constraints of the region restrict irrigation development with the result that, majority of cultivated area remains rainfed. Climate change is also a serious issue concerning hill economy. Its impact on livelihood security is dictated, among other things, through change in hydrology. In addition to highlighting hydrological issues, suggestions are offered on how to deal with water related issues to livelihood enlargement and protection.

Abstract
The western Himalayan region is rich in a variety of natural resources owing to the existence of a range of biophysical and climatic interactions. Mountain inhabitants have been living in harmony with these natural resources for generations to meet their subsistence needs out of these resources.  However, recent decades have witnessed a substantial imbalance between man and nature that has adversely affected the livelihood of native people. Several anthropogenic and natural factors are responsible for this change. Furthermore, the exposure of mountain societies to outside world has opened up a number of new livelihood options based on both natural resources and other forms of human capital. The local people have adopted some livelihood practices suiting to the changed conditions at the expense of the age-old agri-silvi-pastoral mode of livelihood. There is an emerging challenge for policy makers and planners to make developmental interventions and tailor made livelihood options suiting to the changed scenario. Several government and non-government organizations and other agencies initiated a number of programmes that focus on natural resource management vis-à-vis livelihood improvement in the region. However, for want of cause and effect analysis many of these programmes are not yielding the desired results. This chapter provides an overview of the traditionally important livelihood practices of the western Himalayan region and some of the emerging livelihood supporting activities based on natural resources of the region. A case study of Bhimtal lake catchment where transformation of traditional livelihood has taken place at a rapid pace due to the influence of tourism and urbanization has also been included to highlight the emerging scenario. The paper suggests some useful policy options for planning livelihoods in the western Himalayan region of the country.

Abstract

The Indian western Himalayas have wide variation in altitude, climate, soils, flora and fauna and socio-economic features. Livelihood options are limited due to small and fragmented holdings and inherent hill and mountain specificities. However, the physiographic and agro-climatic variability also offer opportunities of cultivating wide variety of profitable traditional and market oriented crops for exploiting niche advantage. Non-timber forest products play a vital role for livelihood security and demand that initiatives at local and governmental level are taken to develop and popularize technologies for collecting, processing and value adding to these products for commercial exploitation. Research and self help institutions are important in this context but strong regulatory policy framework is equally important. Further, need based and location specific trainings and demonstrations need to be organized to fill the knowledge void especially in traditional activities and emerging vocational enterprises. The national and international business concerns, engaged in exploiting natural resources such as hydro power and calcareous and limestone deposits should also engage more meaningfully in this task, under their corporate social responsibility (CSR) Livelihood generating scheme such as MNREGS should be extended to the non-conventional activities like weed eradication, management of wild (monkeys) and stray (cattle) animals that threaten livelihood security.

Abstract

Geochemical processes occurring within the groundwater and reactions with aquifer minerals have a profound effect on water quality. Hydrogeochemical composition of groundwater can also be indicative of its origin and history of passage through underground materials which water has been in contact. Assessing groundwater quality and developing strategies to protect aquifers from contamination are necessary aspects for proper planning and designing water resources. Anthropogenic activities like explosion of population, industrial growth, inputs of fertilizer, pesticides, and irrigation has been a crucial factor for determining the quality of groundwater. In this scenario, 43 groundwater samples were collected from the Dindigul district of Tamilnadu, a Hard rock terrain. The samples wereanalyzed for major cations and anions along with heavy metals to derive the different quality parameters and to obtain the pollution indices of different samples. This study focuses to find out the spatial relationship between the analyzed fluoride concentration in groundwater and pollution indices derived from the heavy metal concentration in the groundwater of the study area and their variation with respect to season.

Abstract

Amongst all types of major land-use change, extending irrigated agriculture using a surface-water source has the greatest influence on groundwater – both significantly increasing recharge and changing water quality as excess irrigation water infiltrates into shallow aquifers. Hence, in order to understand the impact of the landuse on the groundwater system the study has been aimed to understand the process by adopting geophysical, geochemical and microbial analysis of groundwater samples. The study has been conducted in Chidambaram taluk, with a total area of 92.51Sq.km. A total of 39 groundwater samples were collected for the analysis of major cation and anion along with the microbial analysis, like Total Coliform, Total Viable Counts, Fecal coliforms, Vibrio cholera and Total Streptococci. The geochemical studies reveal that there is no correlation between these parameters and the microbial population. The migration of the water from the elevated regions (urban region) is witnessed and the concentration of the microbial population is higher in these regions except in the southern region which has impermeable clay and this arrest the movement of water.

Abstract

Groundwater is most favored as a source of drinking water in all over world. It is often thought to be cleaner and easier to treat when compared with surface water and as a result, many wells have been sunk. Uranium and other radionuclides in water can lead to health problems if present in higher concentrations. In order to study the behavior and to understand the influence of lithology in groundwater of Madurai district, a study was conducted by collecting a total of 216 samples of different seasons (Premonsoon, South west monsoon, Northeast monsoon and Post monsoon) with respect to lithology and the number of samples was depending upon their spatial coverage in the study area. The groundwater samples were analysed for U, Ca²⁺, Mg²⁺, Na⁺, K⁺, HCO₃^-, Cl^-, SO₄^2-, PO₄^3-, NO₃^-, F^-, H₄SiO₄, pH, EC, TDS. It was identified that the higher concentration of Uranium (156 ppb) were noted in the northern part of the study area. They are chiefly restricted to the Granitic terrain and nearby Charnockitic regions. The weathering process induces the release of higher U ions from the granitic terrain and the evaporated recharge water from the tank /reservoir  also induces the release of U ions from the rock matrix, it may also be due to fertilizer enriched agricultural return flows. The key source for all these processes and hydrogeochemical processes is identified to be lithology which inturn controls all the other processes in the study area.

Abstract

Dissolved Organic Carbon (DOC) consisting of water soluble organic molecules and by products of organic decomposition and chemical degradation processes, constitutes a critical link in carbon and nutrient cycles. The quality, or chemical and physical character, of DOC affects the degree to which it is transformed by biological and chemical processes. The significance of DOC was studied in layered coastal aquifers of the Pondicherry region during four different seasons. Pondicherry region has varied geological set up ranging from Cretaceous to Recent formations. A total of 52 groundwater samples were collected from various aquifers like Alluvium, Tertiary(Upper Cuddalore, Lower Cuddalore) and Cretaceous for two different seasons of pre- monsoon(PRM), and post-monsoon (POM). The samples were analyzed for major ions and DOC. The range of DOC in the study area is 0-14 mg/l. Very high DOC concentrations were measured during PRM in the samples from Alluvium and Lower Cuddalore Formation. The samples of these formations were compared with pH, Ionic strength, log pCO₂ and carbonate minerals concentration. The alluvial aquifer shows that pH governed dissolution along the coastal tracts and in Upper Cuddalore formation it’s based on interaction between aquifer matrix and groundwater.

Abstract

Aquifers are usually composed of permeable layers that can ways a considerable amount of groundwater. Usually, aquifer units are correlated through the concept of lithostratigraphy. For low-permeable aquifers, it is difficult to define the spatial distribution of hydrogeological units, and this study attempts to use geochemical methods to identify the groundwater flow paths in an area of Southeast coast of Tamil Nadu, India. Multiple geochemical analyses, including groundwater chemistry; stable isotopic compositions of d¹⁸O and 8D contents were performed.  Spatial distribution of d¹⁸O, dD, Cl-/HCO-₃ show that northeastern part of the study area seriously affected by seawater intrusion. The highly permeable aquifers at the east coastal region are characterized by high hydraulic conductivity as compared with other regions of the study area. Hydrogeochemical characteristics based on bivariate diagrams of major and minor ions show that changes in the chemical composition of groundwater are mainly controlled by the salinization process followed by cation-exchange reactions.

Abstract

The development and management of fresh groundwater resources in coastal aquifers are seriously constrained by the impact of seawater intrusion. The coastal aquifers are fragile and this situation becomes more intense like that of the coastal Cuddalore region. The geochemical signature of groundwater of Cuddalore coast was studied for Pre Monsoon, Southwest, North east and Post Monsoon seasons by collecting total of 64 groundwater samples in each season. The collected samples from were analysed for physical parameters, such as electrical conductivity (EC), pH and major ion concentrations, such as Ca, Mg, Na, K, Cl, HCO₃, PO₄ and SO₄. Interpretation of analytical data shows the predominance of  Na–Cl type   in PRM and Ca- Mg-Cl type  is the dominant facies during POM. The Chaddas evaluation diagram shows that the hydrogeochemical evaluation plot for PRM samples fall in  Na-Cl type. The ratios of Na/Cl and Cl/HCO₃ is also enumerated the fact that the most of the samples from PRM and few samples from other seasons also indicates dominance of salt water intrusion.

Abstract

In Gadilam river basin, groundwater is found in both hard rock and sedimentary terrain and is the most important source of rural/urban drinking water supply. Gadilam river basin has gained its importance due to the presence of Neyveli Lignite open cast mine (NLC), group of industrial estate (SIPCOT), extensive depressurization of Cuddalore aquifer and boreholes of New Veeranam Scheme (NVS) in the downstream of the basin. A total of 178 water samples were collected in four different seasons at various lithologies. The collected samples were analyzed for various physico-chemical parameters using standard procedures. Geochemical indicators of groundwater were used to identify the chemical processes that control hydrogeochemsitry. Interpretation of hydrogeochemical data suggests that leaching of ions followed by weathering and anthropogenic impact controls the chemistry of the groundwater. Isotopic study reveals that recharge from meteoric source in sedimentary terrain and rock water interaction with significant evaporation prevails in hard rock region. This thorough understanding helps us to make judicial usage and to maintain the quality of this commodity.

Abstract

A study on colloids in groundwater and its relationship with the geochemical parameters is reasonably essential because of its facilitating nature to transport radionuclides in groundwater. Colloid sampling has been carried out in the coastal aquifers of southeast coast of India. Two different bore wells were selected based on the distance from the coast to collect groundwater samples. On the basis of the result achieved from this study, a reliable representation is emerging. The values of pH and EC are governed by the different size fraction of colloids. In this study, the relation between different size fractions of groundwater colloids and its pH, TDS and EC were carried out. These parameters were analyzed in the lab and its influence with four fractions of colloid like 1.2, 0.8, 0.45 and 0.22 µm have been discovered by smooth scatter plot. The accumulation of particles weighting by normal weighing instrument. There is an higher accumulation of particles found in Kalpakkam than Anupuram in all the size fractions. For separation of particles high frequency pressure was used by ultrasonic cleaner had been carried out. This method is very simple and more reasonable than any other methods.

Abstract

A study on the Subsurface groundwater discharge (SGD) in the coastal Cuddalore region of south east India has been carried out. Measurement of surface water Radon, Water level, Electrical Conductivity (EC) and pH for a total of twenty four hours, by hourly interval the measurement has been calculated and promote correlated with tidal values calculated by WX Tide 32 software. The SGD measurements were made by using a modified seepage meter. The study reveals a match with water level variation and tide with minor variation due to influx of surface water. Saline discharges, fresh groundwater discharges and surface water mixing processes were identified along the coast. Lower SGD (37.24 – 79.16 cm/day) were observed during fresh groundwater discharge.

Abstract

Coastal aquifers are the sources of freshwater which are being over extracted due to increase in population, agriculture and industrial activities. This over exploitation has resulted in decline in groundwater level and intrusion of sea water into the coastal aquifers making it unfit for human utilities. An attempt has been made in the coastal tracts of Pondicherry region using Electrical resistivity imaging. The survey has been attempted in six locations spread thought the study area and the interpretation has been attempted by RES2DINV software. The profile length attempted was between 150 to 300 m with electrode spacings between 5 to 10 m. The apparent resistivity ranges between 0.1 to 1183 & ohm. Sea water intrusion was prominent along the northern parts of the study area and lower resistivity isolated in kirumambakkam has been interpreted as salinity due to the presence of clay minerals. In nallavadu saline intrusion has been identified at shallow depth.

Abstract

Deduction of overindulgence fluoride (F)  from the water has been endeavor by numerous investigators by using different materials both natural and artificial. The objective of this paper was to attempt the fluoride removal by using the locally available natural materials such as red soil, untreated charcoal, local powdered brick, fly-ash from Neyveli (thermal power plant) and mineral serpentine were used, adopting column method. Maximum defluoridation occurs immediately after the experiment has started. The morality of fluoride removed per gram is more in red soil when compared to the other materials. Variation of fluoride removal with time was studied after the erection of the column /unit, the defluoridation setup was then connected to the public water supply from the overhead tank of 50,000L capacity. Higher F removal was noted when flow rate was lesser. An attempt on the regeneration of the fluoride adsorbed soil was also made.

Abstract

A total of 30 groundwater samples were collected in four different seasons (Pre Monsoon, South West Monsoon, North East Monsoon and Post Monsoon) from the coastal aquifers of Kalpakkam region of Tamilnadu. The samples were collected covering the seasonal and lithological variations to infer the influence of natural geochemical processes and anthropogenic sources on the groundwater chemistry. The collected samples were analysed for the parameters like EC, pH and Major ions. The saturation index of silicates and carbonates shows that state of saturation to over saturation, but the sulphate minerals is dominantly under saturated. In the inverse modeling three models are obtained using PHREEQC and the error percentage is noted as 7.45%.

Abstract

The geochemical signature and vulnerability of groundwater of the East Coastal aquifers of  India from Pondicherry to Nagapattinam were determined. The coastal aquifers are fragile and this situation becomes more intense in aquifer systems like that of the Pondicherry to Nagapattinam region. A total of 136 water samples were collected during pre and post monsoon of 2008 and 2009 respectively. Out of which 45 samples for each pre and post monsoon from shallow groundwater and 23 samples for each pre and post monsoon from deeper groundwater.. The samples collected were analysed for major, minor cations and anions. Selected samples were also analysed for stable isotopes (d¹⁸O and dD). The analysed samples were studied for; their utility for different purpose, the nature of the geochemical classification, their variations in ion ratios, extent of sea water intrusion and the percentage of mixing, The study reveals that chief mechanism controlling shallow groundwater is the salts precipitated in the pore spaces during the Pre monsoon were leached and dissolved during the subsequent monsoon apart from sea water intrusion. Southern part of the study area  is more vulnerable than the Northern part of the study area.

Abstract

In semiarid climates, a significant component of recharge to basin aquifers occurs along the mountain front. In this scenario Mountain Front Recharge study has been carried along the foothills of Courtallam ,Tamil Nadu. A total of 53 groundwater samples were collected along the foothills and measured for major cations and anions using standard procedure. Saturation index (SI) of carbonate minerals like Aragonite,Magnesite, Calcite and Dolomite,LogpCO₂ and Ionic strength obtained from WATEQ4F output. pH plays a significant role in the saturation index of the minerals. Most of the Carbonate minerals shows undersaturation  with the pH range 7.5. Positive relationship between SI and HCO₃ is noticed. A sharp increase of pCO₂ values towards the foothills region suggests that the groundwater has been recharged by, acquiring longer flow path during its infiltration into deeper level near foot hill region. The SI of these carbonate minerals was spatially distributed to identify the areas of higher SI and also it is compared with the water level fluctuation to understand the recharge process along the foothill region as well as riparian zone.

Abstract

Quality of water is affected by natural and man induced contamination to groundwater system. Area chosen for study has gained its own importance due to the location of two lignite mines and a Thermal power plant in operation. Extensive large scale pumping of water is done for lignite mining. The mine drainage and drainage from thermal power plant along with agricultural return flow from lignite charged waters increases the severity of problem. In order to achieve a panacea for the above-mentioned situation, the study has incorporated and integrated in all related factors to get a meaningful interpretation for groundwater quality and quantity management in and around Neyveli area. The frequent failure of monsoon has added to the existing problem of over exploitation. To attain a panacea for water chemistry groundwater samples were collected for four different seasons. Higher EC and TDS values are observed in Southeast and Southwest part of the study area. In Southwest monsoon and Summer seasons HCO₃Cl dominates the anions, with few representations for SO₄. In Northeast monsoon and Post monsoon season Na + K – Ca + Mg is the dominant. Thermodynamic, studies reveal that groundwater of the region are stable with Kaolinite stability field in all the silicate systems. Bicarbonates derived from silicate mineral weathering are noted in the NW, Northern and in the mining region. These regions are located in the NW and NE part of the study area. Comparison of water quality to standards shows that the water can be used for drinking and for irrigation purposes except in few locations.

Abstract

Radon being the radioactive daughter product of Uranium; the interrelationship between U and Rn has been established in the present study. It is found that Radon coexist with Uranium in the region. A total of 61 samples were collected spatially from hand pumps and bore wells of the study area. Major ions such as Ca²⁺, Mg²⁺, Na⁺, K⁺, F^-, Cl^-, HCO^3-, NO^3-, H₄SiO₄,PO₄- and SO₄^2- and U, Rn were analysed. The lithological influence of U and Radon occurrence is also highlighted. Hard rocks especially Granites are the source for both U and Rn in the study area whereas the lack of correlation exist between U and Rn in sedimentary terrain can be attributed to difference in flow conditions and chemical properties of these elements. 

Key words: Radon, Uranium, Granite, Ground water, Source.
 

Introduction
India possesses wide range of climatic and physio-geographical conditions, which are favourable for the production of various kinds of horticultural crops such as fruits, vegetables, flowers, nuts, spices, plantation crops (coco nut, cashew nut and cocoa) etc. The production of fruits and vegetables (F&Vs) in India is 81.2 million tonnes and 162.2 million tonnes from an area of 6.9 million hectares and 9.2 million hectares respectively during 2012-13 (NHB, 2013).  India is the second largest producer of F&Vs in the world after China. India’s share in the world production of F&Vs is 11.84 per cent and 13.36 per cent respectively (Lagzi, 2013). The importance of horticultural sector can be gauged from the fact that the contribution of horticulture sector in agricultural gross domestic product (agri-GDP) stands at around 30 per cent (Economic Survey, 2013-14).

Entrepreneurship

Entrepreneurship is an activity which helps the entrepreneur to bring changes in the process of production, innovation in production, new usage of materials, creator of market etc. It is a mental attitude to foresee risk and uncertainty with a view to achieve certain strong motives.
The word entrepreneur derived from French verb ‘Enterprendre’ means “to undertake”.

An entrepreneur should have “creative and innovative ideas”. It refers to successful business men who strive hard not only for gain himself in his economic activities but also to grow in all spheres of life.

According to Joseph A. Schumpeter: Entrepreneur is one who innovates, raises money, assembles inputs, chooses managers and sets the commercial organizations going with his ability to identify them and opportunities which others are not able to identify and is able to fulfil such economic opportunities.

Sales Management

According to American marketing Association “Sales management is the planning, direction and control of personal selling, including recruiting, selecting, equipping, assigning, routing, supervising, paying and motivating as these tasks apply to the personal sales force.”

Promotion Mix

The main objectives of promotion mix are to seek buyer’s attention towards the product with a view to : (1) arouse consumer interest in the product (2) inform consumer about the product availability (3) inform the consumer as how is it different from others.

Product

Anything that possesses utility is described as goods. A product is both what a seller sell and what a buyer has to buy. 

According to Phillip Kotler: A product is anything that can be offered in a market for attention acquisition, use or consumption that might satisfy a want or need. It includes physical objects, services, persons, places, organisation and ideas.

According to Stanton: A product is a set of tangible and intangible attributes, including packaging, colour, price, manufacturer’s prestige, retailer prestige and services which the buyer may accept as offering satisfaction or wants or needs.

Pricing

Pricing goods and services is a critical job to maximize the profit of business organizations. Price is the most important determinant of the profitability of the business. Setting the right price can influence the quantities of various products or services that consumers will buy, which in turn determines the total revenue and the profit of the business. Price is the only element in the marketing mix of a firm that generate revenue.

The price of a product or service is the number of monetary units a customer has to pay to receive one unit of product or service (Simon, 1989).