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Rahayu, M
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Agriculture, Biological Sciences & Forestry

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ISOLASI Bacillus thuringiensis BERL. DARI TANAH DAN PATOGENISITASNYA TERHADAP LARVA Crocidolomia binotalis ZELL. PADA TANAMAN SAWI (Brassica juncea L.) Khaeruni, Andi; Rahayu, M; Purnamaningrum, Nenden Teja
Jurnal Agroteknos Vol 2, No 1 (2012)
Publisher : Jurnal Agroteknos

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The aim of this research was to know the pathogenicity of B. thuringiensis against larvae of   C. binotalis Zell on Caisin Plant. The B. thuringiensis isolates were isolated using serial dilution technique, from soil samples that were taken from some locations in Southeast Sulawesi. Pathogenicity test on larvae III of C. binotalis was done using bioassay method. Mortality value was used to know the virulence level of  B. thuringiensis at 7 days after application. The result showed that there were 37 soil samples containing B. thuringiensis and the number of B. thuringiensis isolates were 65. isolates KU-ST7, MN-ST4, KNW-ST8, KLK- ST5,KLK-ST4 and KU-ST4 had the highest pathogenicity and virulence levels, because they had the highest efffect on C. binotalis larvae mortalities, i.e: 100%, with  LT50  value of 2-4  days after application. Key word : Bacillus thuringiensis Berl., bioassay test. Crocidolomia binotalis Zell.,
UJI KONSENTRASI CAIRAN PERASAN DAUN KENIKIR(Tagetes patula Juss) TERHADAP MORTALITAS ULAT PENGGULUNG DAUN (Lamprosema indica ) PADA TANAMAN UBI JALAR Rahayu, M; Pakki, Terry; Saputri, Ramlia
Jurnal Agroteknos Vol 2, No 1 (2012)
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This experiment was conducted at the Plant Pest and Disease Laboratory, taking place in October 2011 to Januari 2012. This research compiled based on completely randomized design (RAL) with 5 (five) treatments and 3 treatment.   The treatment were control (P0), dilution of juice of leaf kenikir 10 mL/ water litre (P1), dilution of juice of leaf kenikir 15 mL/ litre (P2) dilution of juice of leaf kenikir 20 mL/ litre (P3), dilution of juice of leaf kenikir 25 mL/litre (P4), therefore were 15 treatment units. Parameter observed was insect mortality, observed at 12, 24, 36, and 48 hours after application (JSA). Research results indicated that highest average of leaf winder caterpillar mortality (Lamprosema indica) was at treatment P4 (dilution of juice of leaf kenikir 25 mL/ litre), equal to 63,33 % at observation of 36 JSA. Keyword: kenikir’s leaf, mortality, Lamprosema indica, sweet potato
KISARAN INANG WERENG PUCUK METE (Sanurus indecora) DI PEMBIBITAN Rahayu, M; Nurmas, Andi; Yunita, Yunita
Jurnal Agroteknos Vol 2, No 2 (2012)
Publisher : Jurnal Agroteknos

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Cashew  is one of export commodities that has high economic value compared to other commodities.   Sanurus indecora is  one of major pest in cashew, because the pest could decrease both quality and quantity of the products. This study aimed to determine the most preferred host of  S. indecora. The study consisted of: (1) Treatment of food, Choice – method using 10 tail nymphs S. indecora and No-choice method  using 30 individuals of S. indecora (2) The treatment was done by spawning  no-choice method using a single pair of imago S. indecora and Choice-method using 10 pairs of S. indecora. The parameters observed were the number of S. indecora attack on any type of host plant and the number of eggs laid on each  host  plant  species.  The  study  found  that  the  treatment of  feed  no-choice method, nymphs that attacked on mango plants was on average of 8.5 tail, cashew plant 6.5 and rambutan 2.5 tail. Treatment of feed, choice-method,  an average selection of nymphs that attacked the mango plants was 20 tail, cashew plants 5 tail and   rambutan plants 1.5 tail. Spawning, no-choice method, the average number of eggs laid  was 35 on mango plants, cashew plants 16 eggs laid, while no egg laid. Spawning  choice-method the average number of eggs laid was 86 on mango plants, 50.5 on cashew plant while on rambutan plants. The results showed that the most preferred host of S. indecora was mango plant. Keywords: cashew plant, host range, S. Indecora
Co-Authors ANDI KHAERUNI ANDI NURMAS, ANDI Purnamaningrum, Nenden Teja Saputri, Ramlia TERRY PAKKI, TERRY Yunita Yunita