Spodoptera Exigua Pest Control Strategy on Shallots Through Intercropping with Aromatic Plants Lilis wulandari, Rika Despita, Gunawan
Politeknik Pembangunan Pertanian malang
Abstract
Spodoptera exigua is the main pest on shallot plants. The attack rate can reach 40% which results in a decrease in onion production. One way of controlling the environment that is environmentally friendly and reduces pest resistance is by intercropping using aromatic plants. This study aims to control the pest attack Spodoptera exigua. The research method used a randomized block design with 4 treatments, namely: monoculture (P1), onion and celery intercropping (P2), onion and mint intercropping (P3), onion and rosemary intercropping (P4). Each treatment was repeated 6 times so that there were 24 experimental units. In each experiment, the calculation of farming analysis was carried out. Observations of pests were carried out on colonization, attack area, attack level, and intensity of attack of Spodoptera exigua. Observations of plant growth and production were carried out on plant height, number of leaves, and weight of fresh and dry bulbs consumed. The results of observations of pests were analyzed descriptively and the results of observations of plant growth were carried out using ANOVA and DMRT tests at 5% level. The results showed that colonization, attack area, level of attack, the intensity of attack of Spodoptera exigua was the lowest intercropping shallot with rosemary. Plant height, number of leaves, fresh weight of tubers, and dry weight of tubers were best consumed by monoculture treatment, but based on the analysis of farming the most profitable was the intercropping of shallots with rosemary.
Keywords: intensity of Attack, growth, production and business analysis of shallot
