Kombinasi Tanaman Penghalang, Kitosan, dan Ekstrak Daun Bugenvil untuk Pengelolaan Virus pada Tanaman Kedelai. (Indonesian)

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    • Alternate Title:
      Combination of Barrier Crop, Chitosan, Bougainvillea Leaf Extract to Manage Virus on Soybean. (English)
    • Abstract:
      Viral infection is one of the limiting factor of soybean production in Indonesia. This study aimed to test the effectiveness of chitosan, bougainvillea leaf extract, and their combinations as well as insecticide as comparison treatment in controlling virus infections on soybeans in the field. The effectiveness of treatments were tested in main plot with and without maize as barrier plants. Disease assessment, insect population, and agronomic variables were observed weekly. The aphid population in the control treatment with barrier plants showed significantly lower than control without barrier plants, indicating that barrier plants able to hindered aphids to enter the soybean crops. Incorporating of chitosan, bougainvillea leaf extract, and their combination treatments able to control aphid population comparable to insecticide treatment in both main plots. The low AUPPC of aphid populations were in line with lower AUDPC of disease incidence and severity in compared to control treatment. The effectiveness of treatments in plot with barrier plants able to reduced aphid population and disease intensity higher than similar treatments in main plot without barrier plants. The AUDPC among chitosan, bougainvillea leaf extract, combination, and insecticide treatments was significantly lower in both main plots in compared to control treatment. Soybean yields showed significantly higher in chitosan, bougainvillea leaf extract, and combination treatment than control treatments in both main plots. The utilization of maize as barrier plants incorporated by one of chitosan and/or bougainvillea leaf extract will become a eco-friendly management package to control viruses infecting soybean in the field. [ABSTRACT FROM AUTHOR]
    • Abstract:
      Infeksi virus menjadi salah satu pembatas produksi kedelai di Indonesia. Penelitian bertujuan menguji efektivitas kitosan, ekstrak daun bugenvil, dan kombinasinya, serta insektisida dalam mengendalikan infeksi virus pada kedelai di lapangan. Efektivitas perlakuan diuji dalam petak utama tanpa dan dengan pembatas jagung. Peubah penyakit, populasi serangga, dan peubah agronomi diamati mingguan. Populasi kutudaun pada perlakuan kontrol dengan tanaman pembatas lebih rendah daripada perlakuan kontrol tanpa tanaman pembatas, menunjukkan tanaman pembatas mampu menghalangi kutudaun masuk ke pertanaman kedelai. Inkorporasi perlakuan kitosan, ekstrak daun bugenvil, dan kombinasinya mampu menekan populasi kutudaun sebanding dengan perlakuan insektisida pada kedua petak utama. Rendahnya area under population progress curve (AUPPC) kutudaun selaras dengan rendahnya area under disease progress curve (AUDPC) insidensi dan keparahan penyakit dibandingkan dengan kontrol tanpa perlakuan. Efektivitas perlakuan pada petak dengan tanaman pembatas mampu menurunkan populasi kutudaun, insidensi dan keparahan penyakit lebih tinggi dibandingkan dengan perlakuan yang sama pada petak tanpa tanaman pembatas. AUDPC antarperlakuan kitosan, ekstrak daun bugenvil, kombinasi, dan insektisida secara umum berbeda nyata lebih rendah pada kedua petak utama dibandingkan dengan kontrol tanpa perlakuan. Hasil panen kedelai menunjukkan lebih tinggi secara signifikan daripada perlakuan kitosan, ekstrak daun bugenvil, dan kombinasinya dibandingkan dengan perlakuan kontrol pada kedua petak utama. Penggunaan tanaman pembatas yang disatukan dengan salah satu perlakuan kitosan dan ekstrak daun bugenvil dapat menjadi paket pengelolaan yang ramah lingkungan untuk mengendalikan infeksi virus pada tanaman kedelai di lapangan. [ABSTRACT FROM AUTHOR]
    • Abstract:
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