Abstract

A field experiment was conducted at Agricultural Research Institute, Rajendranagar, Hyderabad during Rabi seasons of 1978-79 and 1979-80 in vertisols holding a quantity of 250 to 300 mm moisture/m depth of soil, to find out the optimum number of irrigations and plant density for rabi redgram .The results has shown that seed yield and yield compo- nents 'except seed weight were not significantly affected by irrigation treatments. However, when two irrigations were given at 75 and 105 days after sowing, maximum seed yield of 2133 and 2139 kg/ha was recorded during 1978-79 and 1979-80 respectively. This showed an increase of 19 and 14% over no irrigation during 1978-79 and 1979-80 respectively. Among the plant densities, 1.11 lakhs/ha (45 X 20 cm) was found to be optimum in view of its wider row spacing which, permits growing of short statured inter crop besides its high yield. There is no interaction between irrigation levels and plant densities for any of the characters studied. Thus it can be seen that a plant density of 1.11 lakhs/ha with a spacing of 45 X 20 cm is optimum for getting good yields of rabi redgram in verticols.

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