Micronutrient status and fertilizer use scenario in India |
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| Institution: | 1. Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, West Bengal 721302, India;2. International Consultant, The Asian Development Bank (ADB), 6 ADB Avenue, Mandaluyoung City, Metro Manila 1550, Philippines;3. Department of Soil Science, Punjab Agricultural University, Ludhiana, Punjab 141004, India;4. Department of Civil Engineering, Indian Institute of Science, Bengaluru, India;5. Former Vice-Chancellor, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli, Maharashtra 415712, India;6. Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal 741252, India;7. ICAR-Central Arid Zone Research Institute, Jodhpur, Rajasthan 342003, India;8. Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi 110012, India;9. Centre for Environment Sciences and Climate Resilient Agriculture (CESCRA), NRL Building, ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110012, India;10. ICAR-Central Soil Salinity Research Institute, Karnal, Haryana, 132001, India;1. University of Florida, USA;2. Nanjing Agricultural University, China;3. CSIRO, Australia;4. Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China |
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| Abstract: | India was dependent on external food supplies in the early 1960s. To meet the growing demand for food, fiber and fuel, high yielding cultivars were introduced. These high yielding crop cultivars were highly responsive to fertilizers. Thus, slowly the soils were exhausted of their nutrients. Application of major nutrients (nitrogen, phosphorus, potassium) became common, therefore the crops started responding to micronutrient fertilizers. Concerted efforts have been made through the All India Coordinated Research Project on Micronutrients to delineate the soils of India regarding the deficiency of micronutrients. At present about 48.1% of Indian soils are deficient in diethylenetriaminepentaacetate (DTPA) extractable zinc, 11.2% in iron, 7% in copper and 5.1% in manganese. Apart from the deficiency of these micronutrients, deficiencies of boron and molybdenum have also been reported in some areas. Areas with multi-micronutrient deficiencies are limited, thus simple fertilizers are sufficient to exploit the potential of crops and cropping systems. Based on the extent of deficiency, cultivated area, and crop removal, the micronutrient fertilizer demand in 2025 is projected using sufficiency and maintenance approaches. |
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