Comparison of Intercropped Sorghum- Soybean Compared to its Sole Cropping

Abstract

In order to find the best planting pattern of soybean (Glycine max L. Merill) with sorghum (Sorghum bicolor L.) intercropping, this research performed in Gorgan and Aliabaad. Experiment compared on three levels inform of pure sorghum with density of 250000 plant per hectare, intercropping of sorghum and soybean with density of 250000 and 400000 plant per hectare, respectively and intercropping of sorghum and soybean with density of 300000 and 480000 plant per hectare, respectively. The number of planting lines was 60 liens with length of 66.66 meters and 50cm interval. For measuring of plant height, number of tiller, stem diameter and number of node, 10 bushes randomly harvested by using quadrate. By the way total surface area based of project protocol also harvested. For the results analysis t-test applied. Fresh forage production at treatment of intercropping with 300000 and 480000 plant density for sorghum and soybean, respectively in Gorgan %33.33 and in Aliabad %34.32 had priority compared to check treatment (sole cropping of sorghum with density of 250000 plants per hectare). Mean comparison of dry forage also indicated %24.01 increasing in Gorgan and %26.12 in Aliabaad.