Control of Pepper yellow leaf curl Indonesia virus and Its Vector (Bemisia tabaci Genn.) on Chili Plants (Capsicum annum L.) Using Resistant Variety and Insecticide Application

Abstract

PepYLCIV, the cause of chili yellow leaf curl disease, is currently widespread in Indonesia and cause up to 100% yield loss, transmitted by whitefly, namely Bemisia tabaci. The purpose of the current study was to determine the effect of using chili varieties with different resistance to Geminivirus and different frequencies of insecticides application on B. tabaci population, PepYLCIV incidence and severity on two chili varieties with different resistance to Geminivirus. The experimental design used was a Split Plot Design. The main plots were chili varieties consisting of Baja MC F1 and Pilar F1. Sub-plots were the frequency of insecticides application which consisted of three levels, those are: not applied, applied once a week, and applied twice a week. Parameters observed were B. tabaci population, disease incidence and severity which carried out every week (starting 23 days after planting). The results showed, the use of insecticides and varieties with different resistance to Geminivirus had no effect on suppressing B. tabaci populations during the rainy season. Thus, chili plants didn’t need insecticides application during the rainy season. The use of resistant varieties can reduce the incidence and severity of chili yellow leaf curl disease, but both varieties reacted similarly to B. tabaci.

Initiatives and Prospects for Sustainable Agricultural Production in Karangasem Regency, Bali, Indonesia

“…Interviews revealed considerable differences in Pilar production, which may be due to differences in pest management. Thus, several farmers use high-frequency synthetic insecticides to control the disease; however, there are concerns regarding the negative effects of insecticides on agricultural workers, consumers, and the environment [32]. The freedom of farmers in selecting which crop varieties to grow enables them to select pest-resistant varieties.…”

Chili cultivars Vulnerability: A multi-factorial examination of disease and pest-induced yield decline across different growing microclimates and watering regimens

“…Specific cultivars, for instance, can grow more compactly, which could make them more vulnerable to stress and slower to recover. These findings imply that cultivar-dependent vulnerability to specific diseases occurs [38]. The Osaka cultivar's increased vulnerability to fungi and viral diseases may be related to its genetic composition; molecular research could explore this further [15].…”