THE APPLICATION OF BIORATIONAL PESTICIDES ON PADDY STEM BORER  AND BACTERIAL LEAF BLIGHT

Yadi - Suryadi

doi:10.21831/jps.v24i1.23420

THE APPLICATION OF BIORATIONAL PESTICIDES ON PADDY STEM BORER AND BACTERIAL LEAF BLIGHT

Yadi - Suryadi, ICABIOGRAD-IAARD, Indonesia

10.21831/jps.v24i1.23420

Abstract

This study was aimed at determining the effectiveness of pheromone traps for controlling yellow paddy stem borer (Scabpophaga. Incertulas) insects and testing the effectiveness of biocontrol agents consisting of a mixture of endophytic bacterial cultures (Bacillus firmus E65 and Burkholderia sp E76) and insect pathogens (Serratia marcescens, SKM) based on kaolin bioformulation to control HDB disease. Tests were carried out on the conditions of farmers’ organic land in Cianjur, West Java by installing pheromones to catch male insects in the experimental plots, and applying kaolin-based biopesticide formulations (2.5 g / L). The results show that the application of pheromone traps by using 100 traps in an area of 10 ha, caused the population of male insects to be caught to decrease by less than 40 moths per month. It also effects stem borers to decrease into zero infestations, while stem borer infestation in plots that are not applied to pheromones show <10% infestation. The effect of bioformulation on non-Sintanur cultivars on other minor pests also decrease compared to controls (cv. Sintanur). Kaolin-based bioformulation shows a decrease in bacterial leaf blight of about 84.7% compared to untreated (without bioformulation) plots.

APLIKASI PESTISIDA BIORASIONAL TERHADAP PENGGEREK BATANG DAN HAWAR DAUN BAKTERI PADI

Penelitian ini bertujuan untuk mempelajari efektivitas perangkap feromon untuk mengendalikan serangga penggerek batang padi kuning (PBPK) (Scirpophaga. incertulas) dan menguji efektifitas agen biokontrol yang terdiri atas campuran kultur bakteri endofitik (Bacillus firmus E65 and Burkholderia sp E76) dan patogen serangga (Serratia marcescens, SKM) berbasis bioformulasi kaolin untuk mengendalikan penyakit HDB. Pengujian dilakukan pada kondisi lahan organik petani di Cianjur Jawa Barat dengan cara memasang feromon untuk menangkap serangga jantan pada petak percobaan, dan melakukan aplikasi formulasi biopestisida berbasis kaolin (2,5 g/L). Hasil penelitian menunjukkan bahwa aplikasi perangkap feromon dengan mengguna-kan 100 perangkap pada area seluas 10 Ha, menyebabkan populasi serangga jantan yang tertangkap menurun kurang dari 40 ngengat per bulan, dan serangan hama penggerek batang juga menurun menjadi nol infestasi, sementara serangan hama penggerek batang pada petak yang tidak diaplikasi feromon menunjukkan <10% infestasi. Pengaruh bioformulasi pada kultivar non-Sintanur terhadap hama minor lainnya juga menurun dibandingkan dengan kontrol (cv. Sintanur). Bioformulasi berbasis kaolin menunjukkan penurunan penyakit hawar daun bakteri sekitar 84,7% dibandingkan dengan petak tanpa perlakuan (tanpa bioformulasi).

Keywords

rice, stem borer, bacterial leaf blight, pheromone traps, biopesticides

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DOI: https://doi.org/10.21831/jps.v24i1.23420