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Integrated nutrient management for sustaining productivity and fertility building of soil under rice (Oryza sativa)- based cropping system

Indian Agricultural Research Journals

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Title Integrated nutrient management for sustaining productivity and fertility building of soil under rice (Oryza sativa)- based cropping system
 
Creator PRADHAN, B K
MONDAL, S S
 
Subject rice- based cropping, green-manuring,legume,non-legume,productivity, fertility build-up, net production value, uptake, Oryza sativa, Sesbania cannabina, Lathyrus sativus
 
Description A field experiment was conducted during, pre-rainy season, rainy season. winter season and summer season of1989-91 to evaluate the productivity, ferility build-up of soil and the economics involved in different rice (Oryza sativaL.) - based cropping systems. The productivity of rice was maximum (4.98 and 5.69 tonnes/ha) when both rainy- andsummer-season rice in sequence were green-manured in situ with prickly sesban or dhaincha [Sesbania cannabina (Retz.)Pers.; syn S. aculeata (Willd.) Poir.], grasspea or khesari (Lathyrus sativus L.) respectively along with 100% of therecommended dose of N, P and K (60, 14.2 and 25 kg/ha and 80, 22 and 41.5 kg/ha respectively in rainy- and summer season rice). However, comparable yield (4.84 and 5.42 tonnes/ha) was obtained when both rainy and summer-season rice in sequence were green-manured in situ along with 75% of the recommended dose of fertilizers (N45 P10.6, K18.7 and N60 P165 K31 in rainy and summer season respectively). Green-manuring twice in a year before transplanting of both rainy- and summer-season rice improved the soil-nutrient status (260 kg N/ha, 16.1 kg P/ha and 21 kg K/ha), Green-manuring with sesban and khesari was found equivalent to 19.4 and 31.1 kg fertilizer N/ha during rainy- and summer-season rice respectively.Maximum net production value (2.11) was recorded in the sequence where both the rice crops were green-manuredwith legume along with 75% recommended dose of N, P and K Fertilizer-use efficiency was improved (40.05) when anylegume crop was included in a croPPing sequence involving 2 rice crops, and the improvement was maximum (41.42)when legume crop was buried into soil before transplanting both rainy- and summer-season rice. Hence the recommended dose of N, P and K may safely be reduced by 25% if green-manure is provided to both the rice crops in sequence.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2013-05-17
 
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/29966
 
Source The Indian Journal of Agricultural Sciences; Vol 67, No 7 (1997)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/29966/13507
 
Rights Copyright (c) 2014 The Indian Journal of Agricultural Sciences