15.

Technologies developed under the project and impact of the technologies

Micronutrients have dramatic effect on crop growth. Their deficiency caused either very low yield or entire failure of crops. The project has created incredible contributions in basic and applied research in generating technologies or ushering Green Revolution and Yellow Revolution" in the country. Our project has made possible to exploit the potential yields of high yielding crop varieties, which made India not only to become a self sufficient in food grain but a food surplus nation. The adaptability and impact of technologies developed under the project is very high. Some of them are listed follows.

1. Deficiency symptoms atlas of micronutrients have been published.

2. Critical limit established in soils and plants are being used by soil testing and plant clinic labs extensively for identifying nutritional disorders in soils and plants and for guiding the farmers to adapt suitable corrective measures.

3. Soil fertility maps have been prepared and the deficient areas have been delineated.

4. Suitable low cost technologies suited to specific crops or cropping system and location have been developed and are being widely adopted.

5. IPNS approach is found good to sustain productivity and improve micronutrient fertility of soils.

6. Oilseeds, pulse and cereal crops respond to sulphur and zinc fertilization. Application of 20 kg S/ha to each crop and 40 kg S/ha to oilseed based cropping system is found optimum and significantly increases the yield, oil and protein content in seeds. Application of 5 kg Zn/ha significantly enhanced the oilseed yield but has less effect on enhancing oil content in seed.


Frontline demonstration to show respornse of mustard to sulphur added in calcareous soils of pusa, Bihar	Frontline demonstration to show respornse of mustard to zinc added in calcareous soils of pusa, Bihar

7. Trace elements toxicities like Degnala disease due to excess selenium in Kandi area of Punjab and Arsenic toxicity in West Bengal have been identified. Heavy metal contamination in sewage/ industrial effluents has been monitored and Technology of their safer use has been suggested. Sulphur application reduces the selenium toxicity.