Journal ArticleDOI
Yield trends, and changes in soil organic-C and available NPK in a long-term rice–wheat system under integrated use of manures and fertilisers
TLDR
Analysis of yield trends and effect of fertiliser NPK application, alone or in combination with farmyard manure, green manure or wheat crop residue incorporation, on the changes in soil organic carbon (OC) and available NPK contents indicates the advantage of combined use of manures plus fertilisers over fertilisers alone in sustaining crop yields.About:
This article is published in Field Crops Research.The article was published on 2000-11-01. It has received 227 citations till now. The article focuses on the topics: Green manure & Manure.read more
Citations
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Journal ArticleDOI
Enhancing crop yields in the developing countries through restoration of the soil organic carbon pool in agricultural lands.
TL;DR: In this article, the authors show that crop yields can be increased by 20 to 70 kg for wheat, 10 to 50 kg for rice, and 30 to 300 kg for maize with an increase in soil organic carbon pool in the root zone.
Book ChapterDOI
Plant nutrition research: Priorities to meet human needs for food in sustainable ways
TL;DR: In this article, the authors proposed the integration of plant nutrition research with plant genetics and molecular biology is indispensable in developing plant genotypes with high genetic ability to adapt to nutrient deficient and toxic soil conditions and allocate more micronutrients into edible plant products such as cereal grains.
How extensive are yield declines in long-term rice-wheat experiments in Asia? Field Crops Res
Ladha Jk,Ladha Jk,Singh Yadvinder,D. Dawe,H. Pathak,Padre At,A. T. Padre,Yadav Rl,R. L. Yadav,Singh Bijay,Y. Singh,P. Singh,Kundu Al,Amitabh Kundu,R. Sakal,N. Ram,Regmi Ap,A. P. Regmi,S. K. Gami,Gami Sk,Bhandari Al,A. L. Bhandari,R. Amin,Yadav Cr,C. R. Yadav,E. M. Bhattarai,Bhattarai Em,S. K. Das,H.P Aggarwal,Aggarwal Hp,R. K. Gupta,Gupta Rk,P. R. Hobbs,Hobbs Pr +33 more
TL;DR: In this paper, the authors analyzed 33 rice-wheat LTE in the Indo-Gangetic Plains (IGP) of South Asia, non-IGP in India, and China to investigate the extent of yield stagnation or decline and identify possible causes of yield decline.
Journal ArticleDOI
How extensive are yield declines in long-term rice-wheat experiments in Asia?
Jagdish K. Ladha,David Dawe,Himanshu Pathak,A. T. Padre,R. L. Yadav,Bijay Singh,Yadvinder Singh,Y.V. Singh,P. P. Singh,Amitabh Kundu,R. Sakal,N. Ram,A. P. Regmi,S. K. Gami,A. L. Bhandari,R. Amin,C. R. Yadav,E. M. Bhattarai,S. K. Das,H.P Aggarwal,R. K. Gupta,Peter Hobbs +21 more
TL;DR: In this paper, the authors analyzed 33 rice-wheat LTE in the Indo-Gangetic Plains (IGP) of South Asia, non-IGP in India, and China to investigate the extent of yield stagnation or decline and identify possible causes of yield decline.
Journal ArticleDOI
Synthetic nitrogen fertilizers deplete soil nitrogen: a global dilemma for sustainable cereal production.
TL;DR: A major global evaluation of current cereal production systems should be undertaken, with a view toward using scientific and technological advances to increase input efficiencies, and the input of ammoniacal N should be more accurately matched to crop N requirement.
References
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Journal ArticleDOI
Opportunities for increased nitrogen-use efficiency from improved resource management in irrigated rice systems
Kenneth G. Cassman,Shaobing Peng,D. C. Olk,Jagdish K. Ladha,W. Reichardt,Achim Dobermann,Uma M. Singh +6 more
TL;DR: In this article, a model for calculating N-use efficiency is proposed that explicitly accounts for contributions from both indigenous and applied N to plant uptake and yield, and the authors conclude that the intrinsic capacity of wetland rice systems to conserve N and the rapid N uptake potential of the rice plant provide opportunities for significant increases in N efficiency by improved management and monitoring of indigenous N resources, straw residues, plant N status, and N fertilizer.
Journal ArticleDOI
How widespread are yield declines in long-term rice experiments in Asia?
David Dawe,Achim Dobermann,Piedad F. Moya,S. Abdulrachman,Bijay Singh,P. Lal,S.Y Li,B Lin,G. Panaullah,O. Sariam,Yadvinder Singh,Anand Swarup,P. S. Tan,Q.-X. Zhen +13 more
TL;DR: The data suggest that while yield declines exist in some LTEs, they are less common than previously thought, particularly at moderate yield levels.
Journal ArticleDOI
Rice-wheat cropping system: assessment of sustainability under green manuring and chemical fertilizer inputs
TL;DR: Benefit : cost ratio of fertilizer inputs and green manuring practices increased in both crops and for all treatments, indicating that the benefit accruing from fertilizer improved with time.
Meeting South Asia's future food requirements from rice-wheat cropping systems : priority issues facing researchers in the post-green revolution era
P.R. Hobbs,M.L. Morris +1 more
TL;DR: The importance of rice-wheat cropping systems in meeting present and future food needs in South Asia is reviewed in this article, where evidence from a number of factor productivity studies, which analyze yield trends after adjusting for changes in levels of input use, suggests that growth in the productivity of South Asia’s rice and wheat systems is leveling off and, in some areas, declining.
Journal ArticleDOI
The nitrogen cycle in the Broadbalk Wheat Experiment: recovery and losses of 15N-labelled fertilizer applied in spring and inputs of nitrogen from the atmosphere
TL;DR: In this paper, the authors used the Broadbalk wheat experiment at Rothamsted to investigate the effect of N-labeled nitrogen fertilizer on crop yield and soil mineralization.
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