Browsing by Author "Suharto, Hendarsih"

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    Evaluasi Penerapan Pengendalian Terpadu Pada Hama Penggerek Batang dan Penyakit Hawar Daun Bakteri
    (Balai Besar Penelitian Tanaman Padi, 2010-11-18) Noor, E. Sutisna; Kurniawati, Nia; Suharto, Hendarsih; Kadir, Triny S.
    Abstract Resistance of Swampy Rice Lines to Brown Plant Hopper. There were a total of 9.5 million ha swampy areas potential to be utilized as a productive agriculture land. The main constrain in the areas were abiotic and biotic in nature. In those areas the rice plants usually grown were local varieties and the yields were low. To obtain rice varieties resistant to the brown plant hopper and have good yield potential, a greenhouse studies have been conducted at Muara Experimental Station, the ICRR, during the year of 2007 and 2008 by the method of seedling box screening test. The rice lines tested were those selected from the early yield test (EYT) and the multi-location test (MLT) trials. The tested lines were infested with the brown planthopper biotype 2 and 3 which have been reared in the Green House of Muara Experimental Station. Results of the screening indicated that the lines of B9858D-KA-55, IR70213-9-CPA-12-UBN-2-1-3-1, and IR70215-2-CPA-2-1-UBN-1-2 were moderately resistant to the BPH biotype 2 and biotype 3, while the line IR70181-5-PM1-1-2-B-1 was resistant to biotype 3 and moderately resistant to biotype 2. Abstrak Ketahanan varietas padi rawa yang ada sekarang terhadap wereng cokelat (Nilaparvata lugens Stal) perlu diuji untuk mendapatkan varietas padi yang tahan terhadap wereng cokelat (WCK). Uji ketahanan beberapa galur padi yang berasal dari Kelti Pemuliaan, BB Padi telah dilakukan di rumah kaca KP Muara, Bogor, BB Padi pada MT 2007 dan 2008. Galur padi yang diuji disemai dalam seedling box screening test, kemudian diinfestasi dengan WCK biotipe 3. Hasil pengujian menunjukkan bahwa galur yang agak tahan terhadap WCK biotipe 3 adalah B9858D-KA-55, IR70213-9-CPA-12-UBN-2-1-3-1, dan IR70215-2-CPA-2-1-UBN-1-2. Sementara galur IR70181-5-PM1-1-2-B-1 menunjukkan reaksi tahan dan agak tahan berturut-turut terhadap WCK biotipe 3 dan 2.
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    Pengaruh Ketebalan Kemasan dan Lama Penyimpanan Terhadap Efektivitas Campuran Saponin dan Urea Dalam Mengendalikan Keong Mas (Pomacea canaliculata L)
    (Balai Besar Penelitian Tanaman Padi, 2010-11-18) N. Kurniawati; Suharto, Hendarsih
    Abstract Effect of duration of storage and package plastic thickness to effectivity of Saponin mixture to control golden apple snail. Organic molluscicide Saponin, was effective against the golden apple snail (Pomacea canaliculata L), but its effectiveness was only three days. On the hand, basal fertilizer could suppress the golden apple snail (GAS) damage. Effect of duration of storage and three package plastic thickness was evaluated on selected treatments were evaluated. All trials were arranged in Completely Randomized Design with three replications. Trials were done in the rainy season 2007/2008. Laboratory trials were conducted to test several mixtures between fertilizer urea and Saponin. Two litters of water wash poured to each mixture with concentration 0.2 g/l and put in a 30 cm diameter basin. 20 of 1,5 cm diameter GAS were put in the basin. Damage plant and died GAS observation were held 4 days after infestation. All data were subjected to analysis of variance and differences among means were tested by DMRT 5%. Results of trials showed that: Urea at 100 kg/ha could suppress plant damage due to GAS; Saponin at 20 kg/ha, either in coarse or powder forms had the same effectiveness. Mixture between basal fertilizer Urea + SP36+ KCI and Saponin (20 kg/ha) was more effective compared to Saponin application alone in decreasing plant damage. Abstrak Pestisida nabati berdasarkan percobaan terdahulu efektif terhadap keong mas (Pomacea canaliculata L), namun efektifitasnya hanya tiga hari. Dilain pihak pemupukan dasar dilaporkan dapat mengurangi tingkat serangan keong mas. Untuk mengetahui pengaruh larna penyimpanan dan ketebalan kemasan terhadap efektifitas campuran Saponin, telah di lakukan pengujian di rumah kasa BB Padi pada musim hujan 2007/2008. Percobaan dirancang dalam Rancangan Acak Lengkap (CRD) dengan 3 ulangan. Campuran Saponin dengan pupuk urea urea, diuji daya bunuhnya nya terhadap keong mas dan kerusakan tanaman. Tiap campuran dilarutkan dengan 2 liter air dengan konsentrasi 0,2 g/l air dan ditempatkan ke dalam baskom berdiameter 30 cm. Setelah larutan siap, sebanyak 20 ekor keong mas ukuran 1,5 cm dimasukan ke dalam larutan tersebut. Pengamatan tanaman rusak dan keong yang mati dilakukan pada 4 hari setelah infestasi (HSI). Data dianalisa sidik ragam dan perbedaan diuji dengan DMRT 5%. Hasil pengujian yang baru didapat ialah: Urea pada dosis 100 kg/ha dapat menekan kerusakan tanaman oleh keong mas, Saponin pada dosis 20 kg/ha dalam bentuk tepung atau kasar efektif terhadap keong mas.