Mostrando ítems 1-10 de 20
Wheat production and yields in Rawalpindi District of the Punjab from 1983 to 1986
(CIMMYT; PARC, 1989)
Wheat in the rice-based farming system of the Punjab: Implications for research and extension
(Agricultural Economics Research Unit, 1984)
Meeting South Asia's future food requirements from rice-wheat cropping systems: Priority issues facing researchers in the post-green revolution era
The importance of rice-wheat cropping systems in meeting present and future food needs in South Asia is reviewed. Evidence from a number of factor productivity studies, which analyze yield trends after adjusting for changes ...