Journal ArticleDOI
Rice-wheat cropping system: assessment of sustainability under green manuring and chemical fertilizer inputs
TLDR
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.About:
This article is published in Field Crops Research.The article was published on 2000-02-01. It has received 227 citations till now. The article focuses on the topics: Green manure & Fertilizer.read more
Citations
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Book ChapterDOI
Efficiency of Fertilizer Nitrogen in Cereal Production: Retrospects and Prospects
TL;DR: In this article, the authors estimate that 50 to 70% more cereal grain will be required by 2050 to feed 9.3 billion people, which will require increased use of N of similar magnitude if the efficiency with which N is used by the crop is not improved.
Journal ArticleDOI
Productivity and management of rice–wheat cropping systems: issues and challenges
Jagadish Timsina,David J. Connor +1 more
TL;DR: In this paper, a review establishes realistic yield targets and discusses strategies and tactics to improve complementarity of the two crops by choice of cultivar, sowing time, mechanization, soil and water management, choice and combination of organic and inorganic fertilizers, management of weeds, pests and diseases, and the inclusion of other crops into the system, especially legumes.
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.
References
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Journal ArticleDOI
Nitrogen and plant production
R. Novoa,R. S. Loomis +1 more
TL;DR: This chapter focuses on aspects which are related to the uptake and assimilation of nitrogen into amino acids and proteins, and their subsequent interaction in growth and development and provides a broad review of those subjects for crop physiologists, geneticists and agronomists.
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
Nitrogen-use efficiency in tropical lowland rice systems: contributions from indigenous and applied nitrogen
TL;DR: In this paper, the authors quantify the contributions of both the indigenous and applied N to the N efficiency of lowland rice systems and find that the ability to adjust the quantity of applied N in relation to variation in the indigenous N supply is as important to increased Pfp as are the timing, placement and source of applied NP.
Journal ArticleDOI
Sense and sustainability: Sustainability as an objective in international agricultural research
John K. Lynam,Robert W. Herdt +1 more
TL;DR: In this article, the authors discuss how to use sustainability as a criterion by which to evaluate agricultural research, and illustrate the difficulties inherent in applying the criterion and finally draw implications for international agricultural research.
Book ChapterDOI
The Effect of Green Manuring on the Physical Properties of Temperate-Area Soils
R. J. MacRae,G. R. Mehuys +1 more
TL;DR: Green manuring has received little attention by the research community in the past few decades, but with renewed concern about our soil resources, particularly soil degradation, green manuring is increasingly appealing as a means to reduce losses of soil organic matter, compaction, and soil erosion and still maintain economic returns.
Related Papers (5)
How extensive are yield declines in long-term rice-wheat experiments in Asia?
Productivity and management of rice–wheat cropping systems: issues and challenges
Jagadish Timsina,David J. Connor +1 more