The Effect of Siam weed Chromolaenaodorata L on the Diversity of Pest and Natural Enemies in Soybean and Corn Plant Intercropping

Abstract

Intercropping systems generally provide a higher yield when combined crop cultivation is done appropriately. Chromolaenaodorata L. has a secondary metabolite that is flavononas, flavonas, khalkones, tannin, aromatic acids and essential oils. The objective is to determine the effect on the development siam weed plant pests and natural enemies of soybean and corn intercropping system. experiment using Randomized Completed Block Design (RCBD) one factor, consist C0 (Corn X Soybean (control); C1 (3 C.odorata X Soybean X corn); C2 (6 C.odorata X Soybean XCorn); C3 (9 C.odorataXSoybean Xcorn); and C4 (12 C.odorata x soybean x Corn, All treatment was repeated three times to obtain 15 combined treatment of the data were analyzed by Analysis of Variance (ANOVA) The results, highest diversity index in C0 2.50, and the diversity index lowest in 2.28, the level of damage to corn plants minimum 3. 03% are in C1, the maximum amount of 79.77 g soybean pod fruit and seed weight of 20.21g maximum at C1. Cob maximum weight of 753.3 g and maximum weight of seeds of 586.7 g everything contained in C1