Pengaruh Insektisida Buprofezin Terhadap Populasi Nilaparvata Lugens Stal. (Hemiptera: Delphacidae) Dan Dampaknya Terhadap Kompleks Predator Pada Tanaman Di Tumpang, Malang

Elyassa, Kelvin Mahezkiel and Prof. Dr. Ir. Aminudin Afandhi, and Dr. Silvi Ikawati, (2022) Pengaruh Insektisida Buprofezin Terhadap Populasi Nilaparvata Lugens Stal. (Hemiptera: Delphacidae) Dan Dampaknya Terhadap Kompleks Predator Pada Tanaman Di Tumpang, Malang. Sarjana thesis, Universitas Brawijaya.

Abstract

Wereng batang coklat (WBC) merupakan hama utama yang dapat menyebabkan kerusakan mencapai 20-80% pada tanaman padi. Pengendalian WBC di tanaman padi masih bergantung pada penggunaan insektisida sintetik, diantaranya buprofezin. Dengan latar belakang buprofezin aman, dan pengendalian WBC belum berhasil, maka uji coba lapangan perlu dilakukan. Penelitian ini bertujuan untuk mengetahui pengaruh buprofezin terhadap populasi WBC dan kompleks predator pada tanaman padi. Penelitian dilaksanakan di lahan sawah irigasi yang berlokasi di Desa Pulungdowo, Kecamatan Tumpang, Kabupaten Malang. Waktu penelitian dilaksanakan pada musim penghujan bulan Oktober sampai November 2021. Perlakuan terdiri dari konsentrasi insektisida buprofezin 0 (kontrol); 0,25; 0,5; 0,75; 1 ml/l, dengan 5 kali ulangan. Petak perlakuan berukuran 4 x 5 m dengan 5 tanaman sampel diambil secara diagonal. Pengamatan pada populasi WBC (nimfa dan imago) dan predator Lycosa sp., Cyrtorhinus sp., Paederus sp., dan Micraspis sp. dilakukan secara langsung. Pengamatan pendahuluan dilakukan pada saat tanaman padi berumur 60 HST dan selanjutnya sampai enam kali pengamatan dengan interval 1 minggu setelah aplikasi. Data dianalisis menggunakan uji f dan dilanjutkan dengan uji lanjut DMRT dengan taraf kesalahan 5%. Sedangkan untuk perhitungan nilai efektivitas insektisida buprofezin menggunakan rumus Abbot. Hasil sidik ragam; populasi nimfa dan imago WBC menyebar merata di petak percobaan pada pengamatan pendahuluan. Pengamatan dilanjutkan sebanyak enam kali, populasi nimfa maupun imago WBC lebih rendah pada perlakuan konsentrasi buprofezin 0,25-1 ml/l dibandingkan dengan kontrol (tidak disemprot buprofezin). Populasi nimfa maupun imago WBC pada semua konsentrasi buprofezin efektif mengendalikan populasi WBC pada tanaman padi dibandingkan kontrol, selama percobaan. Namun, pada perhitungan nilai efektivitas insektisida, konsentrasi buprofezin 0,50 ml/l sudah efektif menekan populasi nimfa maupun imago WBC karena memiliki nilai efikasi >70%. Sedangkan hasil pengamatan populasi predator Lycosa sp., Cyrtorhinus sp., Paederus sp., dan Micraspis sp. pada perlakuan konsentrasi buprofezin 0,25-1 ml/l lebih rendah dibandingkan perlakuan kontrol. Hasil ini menunjukkan bahwa dengan aplikasi buprofezin berdampak terhadap populasi kompleks predato

English Abstract

Brown planthopper (BPH) is the main pest that can cause damage to up to 20- 80% of rice plants. BPH control in rice plants still depends on the use of synthetic insecticides, including buprofezin. With the background that buprofezin is safe, and the control of BPH has not been successful, it is necessary to conduct a field trial. This study aims to determine the effect of buprofezin on the population of BPH and predator complex in rice plants. The research was carried out in irrigated rice fields located in Pulungdowo Village, Tumpang District, Malang Regency. The time of the study was carried out in the rainy season from October to November 2021. The treatments consisted of a concentration of buprofezin insecticide 0 (control); 0.25; 0.5; 0.75; 1 ml/l, with 5 repetitions. Treatment plots measuring 4 x 5 m with 5 sample plants were taken diagonally. Observations on populations of BPH (nymphs and imago) and predators of Lycosa sp., Cyrtorhinus sp., Paederus sp., and Micraspis sp. done directly. Preliminary observations were made when the rice plants were 60 DAP and thereafter up to six observations with an interval of 1 week after application. The data were analyzed using the f test and continued with the DMRT further test with an error rate of 5%. As for the calculation of the effectiveness of the insecticide buprofezin using the Abbot formula. Results of variance; BPH nymph and imago populations were evenly distributed in the experimental plot on preliminary observations. Observations were continued six times, the population of BPH nymphs and imagos was lower in the treatment with a buprofezin concentration of 0.25-1 ml/l compared to the control (not sprayed buprofezin). BPH nymph and imago populations at all concentrations of buprofezin were effective in controlling BPH populations in rice plants compared to controls during the experiment. However, in calculating the effectiveness of insecticides, buprofezin concentration of 0.50 ml/l was effective in suppressing the nymph and imago populations of BPH because it had an efficacy value of >70%. While the observation of predator populations Lycosa sp., Cyrtorhinus sp., Paederus sp., and Micraspis sp. in the treatment the concentration of buprofezin 0.25-1 ml/l was lower than the control treatment. These results indicate that the application of buprofezin has an impact on the complex population of predators

Other obstract

Item Type:	Thesis (Sarjana)
Identification Number:	0522040237
Subjects:	600 Technology (Applied sciences) > 632 Plant injuries, diseases, pests > 632.6 Animal pests
Divisions:	Fakultas Pertanian > Hama dan Penyakit Tanaman
Depositing User:	Nur Cholis
Date Deposited:	30 Dec 2022 01:57
Last Modified:	30 Dec 2022 01:57
URI:	http://repository.ub.ac.id/id/eprint/196450

Text (DALAM MASA EMBARGO)
KELVIN MAHEZKIEL ELYASSA.pdf
Restricted to Registered users only until 31 December 2024.
Download (3MB)

Actions (login required)

View Item