Perbandingan Efek Pemberian Bioinsektisida dan Ekstrak Kompos terhadap Produksi Padi Ratun dan Populasi Serangga Hama

Abstract

The advantages of ratooning rice are to save water, cost production, labor, preparation time for planting and harvesting, but the ratooning productivity is still low. This research aimed to study the effect of the bioinsecticide and compost extract on ratooning rice production and insect populations. The ratooning rice was applied by bioinsecticide, compost extract, and combination of bioinsecticide and compost extract with dose 2 L ha-1 per application, respectively. Data of agronomic variables were statistically analyzed using analysis of variance, whereas insect pest population data were analyzed using Chi Square test. The seedling height of ratoon applied by compost extract was the highest among treatments. The number of productive tillers per clumps and rice production on plot applied by compost extract were higher than the insecticide treatment. At the age of 17 day-ratooning rice, application bioinsecticide reduced the population of insect pests, such as Ciccadulina bipunctata, Recilia dorsalis, Nilaparvata lugens, and Nephotettix nigropictus. Thus, application of compost extract tended to improved the growth and production of the ratooning rice, while the bioinsecticide decreased the insect pest population.<br />Keywords: Beauveria bassiana, rice growth, production

Kelimpahan Dan Kekayaan Artropoda Predator Pada Tanaman Padi Yang Diaplikasi Bioinsektisida Bacillus Thuringiensis

“…Ekosistem sawah telah banyak dilaporkan memiliki kelimpahan dan kekayaan spesies artropoda musuh alami yang tinggi Wilyus et al, 2013;Herlinda et al, 2015b). Tingginya kekayaan spesies artropoda musuh alami dapat meningkatkan kestabilan ekosistem sehingga tidak didominasi oleh fitofag (Latoantja et al, 2013), namun banyak faktor yang dapat menyebabkan ketidakstabilan ekosistem sawah, misalnya aplikasi insektisida sintetik yang terbukti banyak menyebabkan kematian artropoda musuh alami (Herlinda et al, 2008;Udiarto et al, 2012), misalnya penurunan kelimpahan dan keanekaragaman spesies artropoda permukaan tanah dari Famili Lycosidae, Lyniphiidae, Carabidae, dan Formicidae pada ekosistem sawah akibat aplikasi deltametrin (Winasa & Rauf, 2005).…”

Kerapatan Dan Viabilitas Konidia Beauveria Bassiana Dan Metarhizium Anisopliae Pada Media in Vitro Ph Rendah

“…Aplikasi bioinsektisida berbahan aktif konidia B. bassiana terbukti tidak menurunkan kelimpahan laba-laba (Herlinda et al, 2015a). Bioinsektisida tersebut juga tidak menurunkan kelimpahan serangga predator di ekosistem sawah (Herlinda et al, 2015b). Hasil penelitian terhadap bioinsektisida berbahan aktif konidia jamur entomopatogen dengan bahan pembawa kompos cair ternyata juga menghasilkan manfaat lebih, yaitu selain mengendalikan serangga hama sekaligus dapat meningkatkan pertumbuhan dan perkembangan tanaman (Herlinda et al, 2015b).…”