Soybean (Glycine max (L.) Merr.) varities selection for the trait of tolerant to nutsedge (Cyperus rotundus (L.)) weed competition

Soybean (Glycine max (L.) Merr.) varities selection for the trait of tolerant to nutsedge (Cyperus rotundus (L.)) weed competition

2012

E04948

This research aimed to get soybean varieties having tolerance to purple nutsedge competition by doing a test of competitive level of soybean to various initial purple nutsedge populations. This research was done in the screen house of Faculty of Agriculture, Brawijaya University in Malang with the altitude of 505 asl and was done from February to June2009. The experiment was arranged on Randomized Block Design Factorial with three replications. The first factor was the varieties of soybeans, consisted of 5 varieties: Anjasmoro, Argomulyo, Burangrang, Cikuray, and Kaba. The second factor was the initial population of purple nutsedge consisted of 4 levels: 0, 3, 6, and 9 tuber/polybag. Fertilizer application per polybag was 0.25 g of Urea; 0.25 g of KCl; 0.188 g of SP-36. Pesticides were applied every week began at 6 days after planting (dap) until 2 weeks prior to harvest. Agronomic characters were measured at interval of 2 weeks starting at 15 dap until 57 dap, while yield and yield components were measured at harvest time (90 dap). The result showed that the initial purple nutsedge population of three tubers started to decrease soybean yield. Cikuray varieties had the higher relative yield in every treatment of purple nutsedge population except for the total plant dry weight character.

2(3):2231-2242, JOURNAL OF BASIC AND APPLIED SCIENTIFIC RESEARCH

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