Madhavan Nair, K PAnnamma GeorgeKAU2020-01-182020-01-181980http://krishikosh.egranth.ac.in/handle/1/5810141240PGAn experiment was conducted in the Instructional farm attached to the College of Agriculture, Vellayani during 1979 to study the effect of three levels each of nitrogen (20, 30 and 40 kg /ha), phosphorus (30,45and 60 kg/ha) and potash (10, 20 and 30 kg/ha) on growth and yield and quality of black gram grown in rice fallowsennullThesis