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Crop responses to residual phosphorus and economic evaluation in soybean – wheat system on Vertisols

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Title Crop responses to residual phosphorus and economic evaluation in soybean – wheat system on Vertisols
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Creator Sammi Reddy, K., Subba Rao, A., Singh, S. and Damodar Reddy, D.
 
Subject Crop responses, residual phosphorus, economic, soybean – wheat system and Vertisols
 
Description Not Available
Field experiments at Jabalpur and Bhopal on Vertisols were conducted to study the residual effects of P applied to either soybean or wheat in a soybean - wheat system in terms of the changes in soil test P values and benefit: cost rations. Phosphorus was applied at rates of 0,13,26.39 and 52 kg P/ ha to soybean 0,13,26 and 39 kg P/ ha to wheat during the first year and in the subsequent years the residual effects were compared with 39 kg P/ ha to each crop as recommended dose. Both soybean and wheat crops, during the three rotations, responded to residual and 39 kg P/ ha applied during 2nd and 3rd crop cycles at Bhopal due to low Olsen P status. But at Jabalpur, residual and freshly applied P had significant influence on soybean and wheat yields only after two annual rotations when Olsen P was below the critical limit. At both the sites, benefit: cost ratios of fertilizer P applied at rates of 13-39 kg P/ ha to first soybean or wheat were high and almost similar upto two crops
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Date 2021-08-25T04:28:38Z
2021-08-25T04:28:38Z
2003-06-01
 
Type Research Paper
 
Identifier Not Available
0378-2395
http://krishi.icar.gov.in/jspui/handle/123456789/60380
 
Language English
 
Relation Not Available;
 
Publisher Not Available