Determination the best time to harvest and seed rates in order to increase the yield production of alfalfa ( Medicago sativa L.) seed

摘要

In order to increase the yield of Alfalfa seed production fields, a factorial experiment was conducted in arandomized complete block design with three harvesting time, three seeding rates and three replications.Harvesting times were: a) assign farm to seed production, after first cutting; b) assign farm to seed production,after second cutting; c) assign farm to seed production, After third cutting; and three seed rates were 5, 10 and 15kg/ha. Sowing was done in December 2012, using Bam alfalfa cultivar. In the first year field was devoted toforage, and treatments were applied in second year. Seed weight, seed production per unit area, fresh and dryforage was measured. Results were analyzed by using MSTATC software. Based on the results, the effect of year,Seed rate, harvest time, Interaction of seed rate and harvest time on seed yield was significant. Treatment ofsowing 5 (kg/ha) seeds and first time harvesting , the highest seeds yield per hectare (624.8 kg/ha) wereproduced(class A).