2. Institutional Publications
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Item Evaluation of colocasia (Colocasia esculenta, (L) schoot) types in Kerala(Kerala Agricultural University, 1985) Ashokan, P K; Vikraman Nair, R; Potty, N NItem Comparative performance of some varieties of greater yam (Dioscorea alata L.)(Kerala Agricultural University, 1984) Ashokan, P K; Potty, N N; Nambiar, I P SItem Uptake of nutrients by rice and weeds in the early stages of semidry rice culture(Kerala Agricultural University, 1998) Musthafa, K; Potty, N NItem Chlorophyll development pattern of rice in iron rich soils(Kerala Agricultural University, 1999) Musthafa, K; Potty, N N; Marykutty, K CItem Effect of preceding fodder crops and fallow on productivity mechanics in first crop season rice(Kerala Agricultural University, 1999) Meera V Menon; Achuthan Nair, M; Potty, N NItem Effect of summer cropping and fallowing on the productivity of rice lands(Kerala Agricultural University, 1999) Meera V Menon; Achuthan Nair, M; Potty, N NItem Incidence of pests and diseases in rice as influenced by fertilizer application and in situ green manuring(Kerala Agricultural University, Vellanikara, 2001) Musthafa, K; Potty, N NItem Effect of in situ green manuring on weeds in rice(Kerala Agricultural University, Vellanikara, 2001) Musthafa, K; Potty, N NItem Effect of cultural management on root characteristics and productivity of rice in laterite soil(Kerala Agricultural University, Vellanikara, 2002) Bridgit, T K; Potty, N NItem Effect of cultural management on yield and yield attributes of rice in laterite soil(Kerala Agricultural University, Vellanikara, 2002) Bridgit, T K; Potty, N NStudies conducted to analyse the pathway of yield formation as influenced by varying cultural management systems in laterite soils revealed that depth of digging at 15 cm or 30 cm or increasing the levels of farm yard manure beyond 5 t ha"1 had only marginal effects on improving the growth and productivity of the plant. Crops under dry seeded condition which did not have reduced soil environment in the early stage manifested better growth as evidenced by higher elongation and more tillers with a steady declining tiller count. Larger numbers of longer roots were another characteristic. As against this, the plants in the reduced environment were comparatively dwarf, tiller production was low but extended beyond maximum tillering and panicle initiation stages and root production was also hindered. The variation in these characters between the two environments worked out to be 46.0 per cent in tiller count and 43.9 per cent in root count. This difference was manifested in the yield levels of 6496 kg ha"1 in dry seeded and 4715 and 4615 in wet seeded and transplanted situations.