تأثیر تاریخ کاشت و اکوتیپ بر عملکرد علوفه خلر 1در غرب تهران

Plant grass pea with high potential of growth and forage production in the non-fertilized soils and erosion and short growing season, makes favorable conditions for forage production. In this experiment for determine of the appropriate time for planting grass pea ecotypes and to obtain the highest yield of forage, an experiment was conducted at the research field of Tarbiat Modares University, Tehran, on 2008-2009 growing season. Sixteen experimental treatment consisting of four grass pea ecotypes (Syria, Ethyopia, Oshnavieh and Mashhad) and four sowing date (15th March, 6th April, 29th April and 23th May) were studied in RCBD with Factorial arrangement in 3 receptions. Effect of planting date on performance was significant as was Obtained forage and dry most of the first planting date values 3.17133 and 1.3746 kg/he, respectively. The delay in planting reduced the leaf area index in plant of the stem length, the weight of dry leaf per unit area and was decrease in dry and wet performance. The differences of ecotypes in the plant height stem, leaf and number of pod performance were significant. In total, In order to obtain combined total forage yield and quality, the first planting date and the Mashhad ecotype is recommended.