2. Institutional Publications
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Item Screening germplasm collection of cowpea(Vigna Sinensis Endl.) for tolerance/resistance to collar rot caused by Rhizoctonia Solani(Kerala Agricultural University, 1979) Viswanathan, T V; Viswambharan, KItem PTB-1 (Kanakamani) a high yielding variety of cowpea(Kerala Agricultural University, 1979) Viswanathan, T V; Viswambharan, K; Chandrika, PComparative yield trial of four varieties and two improved cultuies of Cowpea was undertaken at Rice Research Station, Paltambi during 1974 — 75, Kharif season onwards with a view to isolating and releasing high yielding varieties suitable to Kerala condition. This was continued for three years. The consistently highest yielder Kunnamkulam local was recommended for release for general cultivation in Kerala during December 1977 under the popular name "Kanakamani".Item Effect of two common liming materials on the growth, nodulation and yield of cowpea (Vigna Unguiculata)(Kerala Agricultural University, 1980) Viswanathan, T V; Viswambharan, K; Raveendran, C SItem Influence of conservation practices on run off and soil loss under tapioca in hill slopes(Kerala Agricultural University, 1983) Viswambharan, K; Sasidhar, V KA field experiment was conducted to study the effect of supporting conservation practices on run off and soil loss under tapioca planted in hill slopes. The run off and soil loss were measured under 18 different erosive rainfalls which recorded 12.5 mm or more. Maximum run off and soil losses were observed in uncultivated bare fallow plot which was significantly higher over all the other treatments. Among the cultivation techniques, groundnut intercropping as well as planting of tapioca in ridges across the slope were effective in reducing soil and water losses in tapioca.