Legume Research, volume 36 issue 6 (december 2013) : 552-556
YIELD AND NUTRIENT UPTAKE BY COWPEA (Vigna sinensis) AS INFLUENCED BY INTEGRATED USE OF SEWAGE SLUDGE AND CROP RESIDUE IN A TYPIC HAPLUSTEPT
R.D. Singh, S.K. Singhal, D.R. Biswas, V.K. Sharma
1Division of Soil Science and Agricultural Chemistry
Indian Agricultural Research Institute, New Delhi-110012, India