eChapters

Introduction

The ongoing need to create effective agricultural systems that can meet a farmer’s needs is driven by the demand for food, feed, fodder, and natural resources. More than 86 percent of Indian farm families, compromising marginal and small farmers, live in risky, diversified production conditions. There is limited room for horizontal growth of land for agriculture due to the increasing population and declining land per capita. Small and marginal farmers, who make up 84.97 percent of all operational holdings and operating 44.31 percent of the area, need a powerful tool to ensure income, livelihood security, nutritional security and employment in a sustainable manner.

Introduction

We live in India, a country which is in its developing phase and would be developed soon and also where most of the population is concentrated in the rural areas. So, eventually, rural development emerges to be of much importance for the overall economic development of the nation. But it’s a big disgrace for us that the population in the majority lies below the line of poverty. The development of households in rural areas is of much significantly related to entrepreneurship. Entrepreneurship can be regarded as a tool to fasten up the process of rural development.

Introduction

The total geographical area for farming is 328.7 million hectares whereas, only 139.4 million hectares are a net sown area in India (NHB). India is known as an agricultural powerhouse where small and marginal farmers are at the centre of the Indian rural economy. States like Punjab and Haryana have 80% of the net sown area whereas, Arunachal Pradesh, Mizoram and Manipur have only 10% of the net sown area. With the population increasing every year, innovative farming method should be used to feed the large population, utilising vertical space to make the most limited space and time.

One ofthe biggest issues the world is facing today is the lack of clean and pure water. Due to rising water demands, rigid health regulations, and xenobiotic pollutants, traditional wastewater treatment technologies cannot provide safe water. The present era necessitates innovative approaches to wastewater treatment technologies and improved water resource conservation and management materials. By utilizing innovative nanomaterial, nanotechnology guarantees a continuous provision of potable water and contributes to the preservation of water sources. Nanomaterials expedite rapid processes for the purification, conservation, and reuse of wastewater, complementing other enduring industrial methods. 

Nanotechnology holds immense promise in bolstering environmental protection and sustainability by revolutionizing approaches to monitoring, addressing, and amending environmental pollutants. This paradigm shift extends to resource conservation and energy efficiency through the innovation of more adept technologies. Yet, as we harness the potential of nanotechnology, it is of prime importance to meticulously evaluate its environmental and health implications, instating stringent measures to mitigate risks. Responsible and sustainable development, coupled with effective regulation, is imperative.

Agriculture serve as a backbone in improving economic growth of a country as well as it provides a base in meeting various needs of people in direct and indirect ways. The recent advancement in nanotechnology has shown a path to develop traditional agriculture into a sustainable practice. Several nanochemicals emerged as promising agents for better plant growth, used as fertilizer, pesticides, control weeds and also used as antimicrobial agents in food packaging. Nanotechnology may act as sensor for checking soil health of agriculture fields.

Over the years synthetic pesticides like herbicides, insecticides nematicides etc. have been used to improve crop yield. Indiscriminate application of pesticides ultimately leads to their excess discharge into water bodies during rainfall and causes death of fish and other aquatic life. Also consumption of seafood/fishes may cause biomagnification of chemicals in human body and leads to several lethal diseases like cancer, diabetes, neurodegenerative disorders like Parkinson, Alzheimer, and amyotrophic lateral sclerosis (ALS), birth defects and reproductive disorders. Likewise synthetic pesticides also damage soil texture, soil microbes and soil fertility. Their residues enter into plants and animal systems and further move into animals or humans body through food chain.

Nanotechnology epitomizes one of the most dynamic and transformative fields in modern science and technology. This multidisciplinary domain bridges chemistry, physics, biology, along with engineering, enabling the creation of materials and devices with extraordinary properties and applications. The book chapter reflects the research and patenting trends in nanotechnology. USA leading the global share for most patents granted followed by South Korea, Japan, China and Germany for the top five spots contributing more than 76% of all the granted patents by EPO & USPTO related to nanotechnology. Nanotechnological products in relation to sub-industrial areas of medicine, food, agriculture, cosmetics, environment, and renewable energies are also highlighted in chapter. 

9.1 Introduction

Water is essential for all life and used in many different ways. It is an important part of the ecosystem in which the reproduction of the bio diversity also depends. Fresh water scarcity for agriculture, industry and household purpose is not only limited to the arid climatic regions, but also in areas having high rainfall. Water scarcity is caused by low water storage capacity, low infiltration rate, high evaporation demand and larger inter annual and annual fluctuations of precipitation.

8.1 Introduction

Conservation agriculture (CA) is an approach to regenerative agriculture and land management practices based on three interlinked principles: (1) continuous minimum mechanical soil disturbance using no-tillage or reduced tillage based crop cultivation, (2) maintenance of permanent soil cover using crop residues and cover crops and (3) diversification of cropping system using economically, environmentally and socially adapted crop rotation including legume crops and cover crops coupled with other complementary agronomic management practices (FAO, 2014).

7.1 What is Soil Moisture Conservation Technique?

In situ soil moisture conservation means capturing rain water and retaining it in soil for utilization by plants for better growth and increase in biomass and grain yield. This is achieved through rain water harvesting on farm or field where crops are planted to get benefit from the conserved rainwater. It reduces rainwater loss through runoff and increases rain water infiltration time, thereby increasing the amount of rain water in the soil that will be useful for crop production.

6.1 Introduction

The birth of modern conventional agriculture coincides with industrial revolution. The identification of N, P and K as critical factors in plant growth led to the manufacture of synthetic fertilizers. While chemical fertilizers and pesticides have existed since the 19th century, their use grew significantly in the early 20 century with the invention of Haber-Bosch method for synthesizing ammonia. The rapid farm mechanization, especially in the form of tractor and combine harvester coupled with science-driven innovative management methods and resources led to the efficiency of enabling outputs of high quality produce per unit area and time.

5.1 Introduction

Indian agriculture is now at crossroads. We have come a long way. Over the past five decades our strategies, policies and actions were guided by goals of ‘self sufficiency’ in foodgrain production with main focus on rice and wheat. Indian agriculture has been successful in achieving higher production of food grains to secure food security of the nation. While, the success for increasing food grain production has been achieved without major jump in the production and productivity of pulses in the country, this was accompanied by widespread problems of resource degradation, which now poses serious challenges to meet the demands of an increasing population and lifting our people above the poverty line.

4.1 Introduction

Wheat (Triticum aestivum L.) is a major food security crop in South Asia, with 42% of the wheat in this region grown following rice (Oryza sativa L.) on 13.5 million hectares of land. Resource-conserving technologies offer considerable potential for improving the sustainability and productivity of wheat in the rice-wheat system of South Asia. These include raising input use efficiency, cutting costs, providing various environmental benefits, and ultimately improving farmer livelihoods and helping to reduce poverty.

3.1 Introduction

Rice is the main staple food for most of the world’s population and plays a key role to maintain food security of many countries. More than 90% of the rice production globally comes from Asia and also more than 90% of rice consumption is done in Asia (IRRI, 1997). In Asia, more than two billion people get almost 60-70 percent of their daily energy requirement from rice and its products (Yogeswari and Porpavai, 2018). As for India, since independence the country has witnessed a remarkable progress in rice production.

2.1 Introduction

Present day agriculture is facing more challenges like negative impacts of climate change, depletion of natural resources, increase of input costs etc. The major causes for steady decline in agricultural sustainability include intensive cultivation with conventional tillage practices, reduction of soil organic matter, soil loss by water and wind erosion, reduction in infiltration rate, formation of soil crust and continuous practice of mono-cropping. Over the years, soil and water resources are continuously overexploited leading to reduction in use efficiency of irrigation and energy.

1.1 Introduction

Broadcasting seed and harvesting meagre yields was a common method of ancient agriculture. High use of developed crop varieties, irrigation, chemical fertilizers, pesticides and farm mechanization is the main thrust of modern agriculture. Therefore, modern agriculture is an energy intensive farming system (Khan et al., 2010). Though modern technology based agriculture is achieving success to meet food demand of increasing global population, yet it creates many environmental issues such as loss of soil fertility, salinization and water scarcity.

The hazardous toxic metals like cadmium (Cd), arsenic (As), mercury (Hg), lead (Pb), and chromium (Cr), which have detrimental health effects, are naturally discharged into the atmosphere in various ways viz., industrial wastes, anthropogenic sources, etc. Heavy metal pollution of the atmosphere has become a frightening ecological concern that has created serious threats to the ecosystem. These metals have been identified as group I, human carcinogens due to their persistence in the surroundings and bio-magnification in biological systems. Thus, the removal of heavy metals from the atmosphere becomes a serious matter from the biological and environmental point of view. In the past following techniques adoptedfor toxic heavy metals remediation were classified are bioadsorption, ion exchange, membrane filtration, flotation, and solvent extraction techniques.

The increase in population and global industrialization has led to environmental pollution, which is a significant threat to the health of the ecological system. Different measures are recommended to remediate polluted areas effectively. The applications of nanotechnology in medicine, cosmetics, sports, textiles, and pharmaceuticals have increased over the years. Another approach to remediate the adverse effects of pollutants on the environment is by utilizing nanotechnology for contaminant remediation. Biogenic nanoparticles are tiny particles produced by biological entities such as fungi, bacteria, yeast, and algae. These biogenic nanoparticles are efficient in removing pollutants like heavy metals, pharmaceutical waste, dyes, and hydrocarbon waste. 

Nanotechnology has emerged as a revolutionary force in the food industry, providing innovative solutions to improve food quality, safety, and usefulness. Researchers have devised novel ways to numerous issues in food production and preservation by harnessing nanoparticles' unique traits, such as their high surface area-to-volume ratio and customizable physicochemical characteristics. Nanotechnology-enabled food additives provide a wide range of benefits, including improved texture, taste, color, and nutritional value, as well as increased shelf life and microbiological safety. Furthermore, nanoparticles are effective transporters for bioactive chemicals, allowing for targeted and regulated release within the food matrix.