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Evaluation of organic and inorganic sources of nutrients in maize (Zea mays) and their residual effect on wheat (Triticum aestivum) under different fertility levels

Indian Agricultural Research Journals

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Title Evaluation of organic and inorganic sources of nutrients in maize (Zea mays) and their residual effect on wheat (Triticum aestivum) under different fertility levels
 
Creator KUMAR, ASHOK
DHAR, SHIVA
 
Subject Cropping system; Economics; Maize; Nutrient uptake; Organic nutrient management; Residual fertility;Triticum aestivum; Wheat; Zea mays
 
Description A field experiment was conducted during 2004–06 at New Delhi to evaluate the response of maize (Zea mays L.) – wheat (Triticum aestivum L. emend. Fiori & Paol.) cropping system to different nutrients management practices. Application of recommended dose of fertilizers (120 N+ 26 P + 32 K kg/ha) to maize resulted in maximum growth and yield of maize during both the years. During second year 60 kg N/ha (farmyard manure) + cowpea green manuring + Azotobacter treatment proved as effective as 120 N+ 26 P + 32 K kg/ha in terms of growth, yield attributes and yields of maize. However, wheat showed the highest response on residual fertility of 60 kg N/ha (farmyard manure) + cowpea green manuring + Azotobacter. Application of 120 N + 26 P + 50 K kg/ha showed the superiority over 60 N + 13P + 25 K in both maize and wheat. The uptake of N, P and K also exhibited similar trend to both direct and residual fertility to different nutrient management practices applied to either crop. The value of soil organic carbon increased from the initial status of 0.39% to the maximum status of 0.52% with the application of 60 kg N/ha (farmyard manure) +cowpea green manuring + Azotobacter. Similar trend was also found in respect of available soil N, P and K. The mean productivity (10.77 and 11.72 tonnes/ha maize equivalents), production efficiency (44.3 and 47.1 kg/ha/day), net returns (Rs 50 123 and Rs 55 655/ha) and net returns/rupee (Rs 1.97 and Rs 2.17) of maize–wheat cropping system were maximum with the application of 60 kg N/ha (farmyard manure) + cowpea + Azotobacter to maize. Interaction data on system productivity indicated the 50% saving of NPK in wheat by application of 60 kg N/ha (farmyard manure) + cowpea green manuring + Azotobacter in maize.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor ICAR
 
Date 2010-07-12
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/199
 
Source The Indian Journal of Agricultural Sciences; Vol 80, No 5 (2010)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/199/184
 
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