Abstract:
A field experiment was conducted in the red-loam soils of Agricultural
College Farm, Vellayani during 1974-1975 to study the effect of graded doses of nitrogen (50, 75 and 100 kg/ha) on the growth and yield of sweet potato,
variety H. 42. The length of vine, weight of vine, and length of individual
tuber were not significantly influenced by levels of nitrogen whereas the number
of tubers per plant was significantly increased due to incremental doses of this
nutrient and the response was linear. The yield of tuber was increased progressively
with incremental doses of nitrogen. Nitrogen at 100 kg. /ha recorded
an yield of 104.92 quintals of tuber per hectare while 50 kg. N/ha gave only
an average yield of 81.43 quintals.
