Introduction to Improvement in Food Resources

In this chapter, we explore the fundamental strategies to enhance the production of food resources, ensuring global food security. With the rising population in India, the need for efficient agricultural and livestock practices is more critical than ever. This guide covers crop yield improvement, crop variety management, and sustainable animal husbandry practices.

Crop Variety Improvement

Factors for Crop Variety Improvement

Crop improvement is achieved by selecting varieties that have desirable traits. Scientists focus on several factors:

  • Higher Yield: Increasing the quantity of product per acre.
  • Improved Quality: Enhancing nutritional value, such as proteins in pulses or oil content in oilseeds.
  • Biotic and Abiotic Resistance: Improving resistance to diseases, pests, and environmental stresses like drought or heat.
  • Change in Maturity Duration: Developing varieties that mature quickly to allow for multiple cropping cycles.
  • Wider Adaptability: Ensuring crops can grow in different environmental conditions.

Crop Production Management

Nutrient Management

Plants require essential nutrients for growth, obtained from air, water, and soil. There are 16 essential nutrients, divided into macronutrients (required in large quantities) and micronutrients (required in small quantities). Soil fertility is maintained using manures and fertilizers.

Irrigation and Cropping Patterns

India relies heavily on monsoon rains, but advanced irrigation methods like wells, canals, and drip irrigation are vital. Cropping patterns such as mixed cropping, inter-cropping, and crop rotation are essential to prevent soil depletion and maximize yields.

Crop Protection Management

Pests and weeds can drastically reduce crop yields. Strategies include:

  • Use of pesticides, herbicides, and fungicides.
  • Biological control methods, like introducing specific insects that prey on pests.
  • Summer ploughing to destroy weed seeds and pests.

Animal Husbandry

Cattle Farming

Cattle farming is done for two purposes: milk production and draught labour for agricultural work. Proper maintenance involves hygienic housing and nutritious feed (roughage and concentrates).

Poultry and Fish Production

Poultry farming focuses on egg and meat production. Fish production involves 'Capture Fishing' from natural resources and 'Culture Fishery' or fish farming. Composite fish culture systems are highly popular, allowing 5-6 species to grow in a single pond.

Important Questions and Answers

Q1: Explain the importance of manure and fertilizers.

Manure helps in replenishing soil organic matter and improving soil structure, while fertilizers provide specific nutrients (N, P, K) for rapid plant growth.

Q2: What is the difference between mixed cropping and inter-cropping?

Mixed cropping involves sowing two or more crops simultaneously in the same field, whereas inter-cropping involves growing two or more crops in specific row patterns.

Q3: What are the advantages of composite fish culture?

It allows for the utilization of all available food in the pond, as different species feed in different zones, resulting in higher fish yields.

Q4: How do insects damage crops?

Insects damage crops by cutting root/stem/leaf, sucking cell sap, and boring into fruits and stems, eventually destroying the entire plant.

Chapter Summary

  • The Green Revolution and White Revolution significantly boosted food production in India.
  • Crop improvement focuses on hybridisation and genetic manipulation.
  • Sustainable farming includes balanced nutrient management and crop rotation.
  • Beekeeping and poultry management provide additional income for farmers.
  • Integrated systems like composite fish culture maximize resource utilization.