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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS
Dwinardi Apriyanto
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Education Social Sciences Other

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INSIDENSI PENGGEREK BATANG PADI KUNING (Schirpophaga incertulas Walker) PADA TIGA VARIETAS PADI : KASUS DI DESA KEMUMU BENGKULU UTARA Irma Cahyoko; Dwinardi Apriyanto; Kanang S. Hindarto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 20, No 2 (2018)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.20.2.40-45

Abstract

[INCIDENCE OF THE RICE YELLOW STEM BORER (Schirpophaga incertulas Walker) ON THREE RICE VARIETIES IN KEMUMU, NORTH BENGKULU]. Rice yellow stem borer (RYSB), Schirpophaga incertulas Walker, often causes yield loss in irrigated rice field. Dead heard and white ear head are the common symptomps resulted from the larval damage. The use of resistant varieties may reduce the risk of yield loss, but the resistance may lose quickly as the varieties are continually grown in a large area. The assessment of the insect incidence in rice field is necessary in order to determine the status of the pest for certain period of time. The objective of the study was to determine the incidence and damage incurred by RYSB in three rice varieties, Mekongga, Cibogo, and Situ Bagendit at farmer rice fields. A survey was conducted in December 2017-February 2018 in Kemumu, North Bengkulu Regency. Observation of RYSB was made on randomly selected 30 hills from + 1 ha area for each variety that was located adjacent to each other. Grain yield was measured from the sampled hills and from 3 plots of 9 m2 . Weight of 1000 grain was measured from grain of three sampled hills. The results revealed that the incidence of RYSB was low, as indicated by the presence of egg mass and larvae of RYSB, and no significant difference was found among the three varieties. Nevertheless, the average cumulative number and percentage of dead heart and white ear head was significantly lower in Mekongga than those of Cibogo and Situ Bagendit. In term of grain yield, however, Mekongga outperformed the other two varieties. The low incidence of RYSB might suggest that growing different variety practiced by local farmers was able to suppress pest population, and therefore it should be implemented in all main areas of rice production.
Sekolah Lapang Pengelolaan Hama Terpadu (SLPHT) di Desa Sumber Agung Bengkulu Utara Dwinardi Apriyanto; Tunjung Pamekas; Nadrawati
DHARMA RAFLESIA Vol 20 No 2 (2022): DESEMBER
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v20i2.21471

Abstract

Produktivitas lahan sawah beririgasi di Desa Sumber Agung, Bengkulu Utara masih rendah. Petani mempraktekkan budidaya padi secara konvensional dengan masukan pupuk dan pestisida kimia. Sekolah lapang pengelolaan hama terpadu (SLPHT) dilakukan untuk meningkatkan pengetahuan tentang ekosistem tanaman dan produktivitas padi sawah, dan mengurangi penggunaan pestisida kimia. Kegiatan dilakukan pada demplot seluas +7.500 m2, untuk membandingkan sistem pengelolaan hama terpadu (PHT) dengan sistem konvensional. Petani peserta SLPHT dilatih melakukan pengamatan ekosistem tanaman setiap minggu selama satu musim tanam (11 kali pertemuan). Hasil kegiatan menunjukkan adanya peningkatan pengetahuan petani tentang ekosistem padi dan pengelolaan tanaman sehat dan hama penyakit tanaman hampir dua kali lipat dengan skor nilai dari 42.72 menjadi 83.52. Aplikasi pestisida nabati dan agensia hayati dilakukan pada petak PHT sebanyak 3 kali,  sedangkan aplikasi pada petak konvensional sebanyak 8 kali dengan menggunakan pestisida kimia. Serangan dari hama burung pipit yang tidak bisa ditanggulangi menyebabkan produktivitas rendah. Hasil ubinan gabah kering panen (GKP) pada petak PHT adalah 2.3 + 0.36 kg (setara 2.172 ton per Ha) sedangkan pada petak konvensional 2.06 + 0.38 kg (setara 1.94 per Ha).
Co-Authors Irma Cahyoko Kanang S. Hindarto Nadrawati Tunjung Pamekas