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Benefits from Micro and Secondary Nutrients: Impacts on Farm Income and Livelihoods in Rainfed Tribal and Backward Regions of Andhra Pradesh

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Relation http://oar.icrisat.org/5533/
Technical Bulletin No.1
 
Title Benefits from Micro and Secondary Nutrients: Impacts on Farm Income and Livelihoods in Rainfed Tribal and Backward Regions of Andhra Pradesh
 
Creator Srinivasa Rao, Ch
Venkateswarlu, B
Wani, S P
Dixit, S
Sahrawat, K L
Kundu, S
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description In India, rainfed cropping is practiced on 80 Mha, in arid, semi-arid and sub-humid climatic zones;
constituting about 57% of the net cultivated area. Even after development of all irrigation water resources,
around 50% of the cultivated land will remain rainfed. Low and erratic rainfall, high temperature, degraded
soils with low available water holding capacity and multinutrient deficiencies, low input use and low use
efficiencies of applied nutrients, are important factors that contribute to low crop yields in these regions. Besides
major nutrient deficiencies, deficiency of secondary and micro nutrients has also crept extensively in rainfed
regions as supplementation of nutrients is seldom practiced. Additionally, adoption of intensive cereal based
cropping systems, imbalanced use of fertilizers largely due to subsidized urea and DAp, micro and secondary
nutrient deficiencies have become limiting factors for realizing potential yields. Among these, sulphur (S),
boron (B) and zinc (Zn) are considered to be the most limiting nutrients in the rainfed areas, even in intensively
cultivated tribal and backward regions. Judicious and balanced or integrated use of nutrients based on Site
Specific Nutrient Management (SSNM), will play a major role in improving nutrient use efficiency, achieving
food security and solve malnutrition problem in rainfed regions.
The authors have done a commendable job of highlighting the extent of secondary and micronutrient
deficiencies at state level covering clusters of rainfed backward and tribal regions, depicting deficiency
symptoms of different crops, recommendations for different rainfed crops and cropping systems, yield
and economic advantages of micro and secondary nutrient application as well as farmers' opinions. I trust
that this bulletin prove to be informative and han dy from a practical point of view as well as be useful to researchers, planners and policy makers in ensuring agricultural sustainability under different rainfed cropping
situations in backward areas. In fact, this publication paves the way to promote balanced use of fertilizer for
higher yields, thus improving farmers' profit by breaking the barriers of stagnating/declining trend in the crop
productivity in the rainfed regions of the country which were bypassed by the green revolution of the sixties
and seventies
 
Publisher Central Research Institute for Dryland Agriculture
 
Date 2011
 
Type Monograph
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/5533/1/Impacts%20on%20Farm_2011.pdf
Srinivasa Rao, Ch and Venkateswarlu, B and Wani, S P and Dixit, S and Sahrawat, K L and Kundu, S (2011) Benefits from Micro and Secondary Nutrients: Impacts on Farm Income and Livelihoods in Rainfed Tribal and Backward Regions of Andhra Pradesh. Documentation. Central Research Institute for Dryland Agriculture, Hyderabad, India.