Effect of Spacing and Number Plant per Hill on Nutrition, Yield and Vegetable Soybean Quality

Abstract

The objecteive of this research was to determine the optimum row spacing and number plants/hill on nutrition, yield and marketable quality of vegetable soybean production.  the research was a 2x2 factorial in RCB, with 5 replications, conducted at CMFCRC from early rainy season to late rainy season in 2004-2005.  Vegetable soybean cultivar namely AGS 292 was planted at spacing of 50x20 and 40x20 cm with 2 and 3 plants/hill.  It was found that a spacing of 50x20 cm with 2 plants/hill (32,000 plants/rai) was adequate for maximum total sugar content as 1.7 % in early rainy season.  With normal distribution, no response of vegetable soybean yield to spacing and number plants/hill occurred.  Whereas, standard pdo/plant (241 pods) and node/plant increased and plant height decreased.  Also, it gave large pod in terms of the lowest standard pod/kg with the highest pod length and thichness.  Furthermore, the gross margin at 2,786 bath/rai that was gigher than another spacing.  Spacing of 50x20 cm was also adequate for maximum carbohydrate 70.1 and 69.1 %, oil (7.3%) and total sugar content (3.4 and 2.3%) in late rainy season, Row and spacing affected standard yield.  A spacing of 50x20 cm still showed tha maximum yield (604 and 552 kg/rai) with the highest node/plant, Moreover, it also showed the lowest standard pod/kg 9196 and 241 pods) and standard pod/plant.  All spacing included number plants/hill were unlikely profitable in early rainy season.