بررسي عملكرد و اجزاء عملكرد ذرت و سويا در كشت مخلوط

Study on yield and yield components in corn - soybean Intercropping

This experiment was conducted in research station of Arsanjan Azad University in 2000, in a clay texture in order to evaluate the different ratios of.corn and soyben intercropping comparing to pure cultures of them by using randomized complete block design with 4 replications. Treatments consisted: P1=pure corn, P2=pure soybean, P3=%50 corn + %50 soybean, P4 = %75 corn + %25 soybean, P5 = %75 soybean + %25 corn. This Experiment was conducted by using replacement series method. Evaluated factors were as follows: Corn (kernel yield, number of ears per plant, number of kernels per ear, weight of 100 kernels, stem diameter plant height, ear length, ear diameter, harvest index, crude protein percentage leaf area index). Soybean (kernel yield, number of pod, weight of 100 kernels, plant height, crude protein percentage, leaf area index). The final product in pure culture of corn was, 7424 (kg/h) and pure culture of soybean was 2719 (kg/h). The maximum yield in intercropping treatments respectively related to: Treatment of %50 corn + %50 soybean, 6674.5 (kg/h), %75 corn + %25 soybean, 5974 (kg/h) and %25 corn + %75 soybean, 5076.75 (kg/h). Results showed that: With decreasing the percentage of corn, ear length, number of ears per plant, number of seeds, number of soybean pods, 100 kernal weight of soybean and soybean crude protein percentage increased, because of shading corn on soybean. But different planting ratios had no significant effects on height corn, 100 kernel weight of corn and harvest index of corn. The Maximum LAI for corn was 4.51 and soybean 4.21 in the portion of %75 soybean + %25 corn.