Population density of green planters (Nephotettix spp.) on rice plants (Oryza sativa L.) in Duampanua Village, Sidenreng Rappang Regency
Abstract
Rice (Oryza sativa L.) is one of the staple crops that is widely cultivated for human progress. In the last five years, rice productivity in Sidenreng Rappang Regency has changed. One of the factors that hinder and reduce rice yields is tungro disease infection in plants. Losses due to tungro disease vary from 5 to 70%, depending on the level of spread, changes in the number of vectors, and the growth phase of infected plants. The spread of tungro can develop rapidly, especially if there are supporting factors, such as the abundance of green leafhoppers and the presence of inoculum sources. The purpose of this study was to determine the population density of green leafhoppers on rice plants in Duampanua Village, Sidenreng Rappang District. This research was conducted in farmers' paddy fields in Duampanua Village, Sidenreng Rappang Regency, from January 2025 to completion. This research used diagonal sampling method with random sample selection and interview observation technique. Observations were made at weeks 2, 4, 6, and 8 after planting (WAP). The results showed that in Duampanua Village, the green leafhopper population as a disease vector also showed a fluctuation pattern, the highest increase in the green leafhopper population was in observation 4 (MST) on plot 2 as many as 16 heads, the highest green leafhopper population density was 36% and as the plant age increased the green leafhopper population decreased by 11%. Then there are good cultivation practices that contribute to the low level of tungro attack. However, regular monitoring and synchronised planting are still needed to prevent an increase in the spread of the disease in the future.
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