Correlation Analysis of Yield and Yield Components of Seven Soybean Cultivars on Weed Competition

The research aims to determine the variable yield components that correlate to the yield of soybean cultivars and to obtain soybean cultivars that are able to maintain yield despite competition with weeds. This field research is arranged using split plot with 3 blocks as the repetition where the main plot is the weed treatments and those are weed-free, weeding in a critical period, and weedy. Sub-plot is the soybean cultivars which are Anjarmoro, Argomulyo, Burangrang, Gema, Gepak Kuning, Kaba, and Wilis. The researchs result shows the variable yield component effects to seed yield is the number of pod per plant, number of seed per pod and seed weight per plant. Cultivars which can survive from three kinds of the conditions (weed-free, weeded in a critical period, and weedy) are Anjasmoro cultivar and Kaba cultivar.