%0 Book Section
%A Kumar, P
%A Joshi, P K
%A Johansen, C
%A Asokan, M
%B Legumes in rice and wheat cropping systems of the Indo-Gangetic Plain - constraints and opportunities
%C Patancheru, Andhra Pradesh, India
%D 2000
%E Johansen, C
%E Duxbury, J M
%E Virmani, S M
%E Gowda, C L L
%E Pande, S
%E Joshi, P K
%F icrisat:3470
%I International Crops Research Institute for the Semi-Arid Tropics
%P 166-175
%T Total factor productivity of rice-wheat cropping systems in India - the role of legumes
%U http://oar.icrisat.org/3470/
%X During the past three decades, the rice-wheat cropping systems (RWCS)  in India significantly contributed to enhancing food grain production and  achieving food self-sufficiency and food security. The production system  now is under threat due to stagnating or declining total factor  productivity. Legumes can play a significant role in enhancing the factor  productivity of this most important and productive production system in  the country. Ironically, rice and wheat have replaced the principal  legumes over a period of time. With the availability of high-yielding and  short-duration varieties of important legumes, there is a need to  incorporate them in RWCS to improve the sustainability of the system so  as to meet future food grain demands without degradation of the natural  resource base.