UJI KONSENTRASI CENDAWAN Beauveria bassiana (Bals.) Vuill TERHADAP MORTALITAS KEPIK POLONG (Riptortus linearis) F. PADA TANAMAN KEDELAI

Abstract

[TESTING THE CONCENTRATION OF FUNGI Beauveria bassiana (Bals.) ON MORTALITY OF POD BORER (Riptortus linearis F.) ON SOYBEAN]. To control pod borer (Riptortus linearis F). on soybean using chemical insecticides can cause pollution to the environment, kill non-targeted insects and evolve pest resistance. The use of entomopathogenic fungus is an environmentally friendly alternative, one of which is Beauveria bassiana. (Bals.). The purpose of this study was to obtain an effective concentration of Beauveria bassiana fungi that can kill the pod borer at the 50% level. The study was arranged in a Completely Randomized Design (CRD) consisting of 6 levels of fungi and 3 replications, where each experimental unit used 2 polybags. Each treatment unit used 10 pod borers. The concentration of B. bassiana consisted of 105, 106, 107, 108 and 109 conidia / mL, and without fungi application as a control. The results indicated that the treatment of B. bassiana concentration on R. linearis significantly affected the percentage of mortality and the number of infected R. linearis, but no significant effect on the time of death, number of pods/plants and percentage of the number of damaged soybean pods. The mortality of R. linearis is classified as low, that is, less than 50%.

Efficacy of bio-pesticide Lecanicillium lecanii against soybean-sucking bugs Riptortus linearis during field application

“…Therefore, an investigation on the potential entomopathogenic fungi has been carried out to control R. linearis. A previous study reported the highest potential from Lecanicillium lecanii in controlling R. lienaris in comparison to Beauveria bassiana (Riningrum et al 2020) and Metarhizium (Astuti et al 2020).…”

PERTUMBUHAN JAMUR Beauveria bassiana PADA BEBERAPA TINGKAT KEASAMAN MEDIA DAN SUHU PENYIMPANAN SERTA EFEKTIVITASNYA TERHADAP HAMA Spodoptera litura

“…Kematian larva terjadi sejak hari ke-3 HSA dan terus mengalami peningkatan hingga hari ke-7 HSA. Waktu kematian yang dibutuhkan oleh jamur B. bassiana dalam menginfeksi serangga uji adalah sekitar 2-4 hari (Riningrum et al, 2020). Perlakuan jamur B. bassiana yang tumbuh pada pH 5,5 dan suhu 28°C memiliki kemampuan dalam membunuh larva S. litura tertinggi (76,67%), kemudian disusul pada perlakuan jamur B. bassiana yang tumbuh pada pH 8 dan suhu 28°C (63,33%) dan yang terendah pada perlakuan jamur B. bassiana yang tumbuh pada pH 5,5 dan suhu 24°C (60%).…”