Effect of Nutrition and Irrigation on Radish Seed Production

A factorial experiment was conducted at Ludhiana during the year 1967–68 on the seed production of radish. Treatments consisting of 3 levels of irrigation (30, 45 and 60 per cent moisture depletion), two levels of nitrogen (100 and 200 kg/ha), and two levels of phosphorus (50 and 100 kg/ha) were arranged in randomized block design with three replications. The planting material consisted of roots of variety

White-5. Results indicated that medium level of irrigation induced earlier flowering. Different levels of nitrogen and phosphorus did not have significant effect individually. However, higher dose of N (200 kg/ha) and more frequent irrigation (30 per cent moisture depletion) delayed maturity of seed crop whereas higher level of phosphorus (100 kg/ha and incressing interval of irrigation brought early maturity of seed. Radish seed yield increased with more supply of water through irrigation and higher dose of nitrogen. The consumptive use of water for radish seed production was found to be 54.40 cm/ha and it required irrigation after 30 per cent moisture depletion from the soil.