UJI DAYA HASIL BEBERAPA VARIETAS KEDELAI DALAM TUMPANGSARI DENGAN JAGUNG PADA EMPAT TIPE AGROEKOSISTEM LAHAN KERING DI PULAU LOMBOK NUSA TENGGARA BARAT EVALUATION OF YIELD ABILITY OF SOYBEAN IN MULTIPLE CROPPING WITH MAYZE ON FOUR TYPES OF DRY LAND AGROECOSYSTEM IN LOMBOK. WEST NUSA TENGGARA

Abstract

ABSTRACT

                The aims of this reseaarch were to know : i) yield ability of varieties of soybean planted in multiple cropping with mayze in four types of agroecosystem; ii). Adaptive ability and yield stability, and genetic variability of quantitative traits. The research used Randomized Completely Block Design with eight varieties of soybean, such as : Tampomas, Merapi, Jayawijaya, Willis, Rinjani, Cikuray, Galunggung and Lokon, multiple cropped with mayze var. Arjuna Willis variety as control. The experiment was carried out in four types of agroecosystem, such as : upland depended on the rain, upland irrigated by pump well, dryland after cultivating “gogorancah” rice, and dryland irrigated by high Level Diversion system. The results of the experiment showed that : the types of agroecossystem did not affect on the qualitative traits; the yield ability of Tampomas, Lakon, Jayawijaya, Rinjani, Cikuray and Galunggung is same as Willis but Merapi was lower than it in dryland irrigated by high level diversion system; There is no stable and adative varieties. Tampomas, Jayawijaya and Galunggung varieties were only able to adaptive in productive agroecosystem, but Cikuray and Lokon only adapted specially in marginal condition; The highest variability of harvesting day, number of productive branch and dry seed yield were in the land irrigated by hight level diversion system; plannt height, number of pod, number of filled out of pod were in upland  irrigated pump well; weight of 100 dry seeds was in the dryland depended on the rain after cultivating “gogo rancah” rice.