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POPULATION FLUCTUATION OF ADULT MALES OF THE FRUIT FLY, Bactrocera tau Walker (DIPTERA: TEPHRITIDAE) IN PASSION FRUIT ORCHARDS IN RELATION TO ABIOTIC FACTORS AND SANITATION Hasyim, A.; ., Muryati; Kogel, W.J. de
Indonesian Journal of Agricultural Science Vol 9, No 1 (2008): April 2008
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Fruit fly (Bactrocera tau) is the most destructive pest on somefruits in Indonesia. Monitoring of the pest population is essentialas one of the procedures in the IPM concept. The studyaimed to investigate the seasonal fluctuation of adult males ofB. tau and their damage on passion fruits in relation to abioticfactors. The research was done by a survey method on threeplots of passion fruit orchards in Alahan Panjang, West Sumatra,Indonesia from March to December 2005. In plot 1 thefarmer practiced sanitation by removing damaged fruits andweeds from the orchard. In the plots 2 and 3 no sanitation waspracticed. Each plot was 1 ha in size. The parameters observedwere density of adult male B. tau and climatic factors (rainfallper day, number of rainy days, and average day temperature).Empty mineral water bottle traps were used to catch adult malesof B. tau. Each plot had 16 traps set up with cue lure as fruitfly attractant. Each trap was baited with 3 ml cue lure on acotton wick (1 cm diameter). The cotton wick was rebaited at2-week intervals. The traps were placed on host plants about1.5 m above the ground. Trapped flies were collected every twoweeks and counted. The data were analyzed by correlationanalysis. The results revealed that the number of male B. tauin three orchards showed a similar fluctuation during the studyperiod with a major peak in July. The lower numbers of fliescaptured in plot 1 (with sanitation) compared to the two otherplots (without sanitation) were consistent with a lower percentageof damaged fruits in the plot 1 compared to the other two.The percentage of damaged fruits gradually decreased over timeto about 20% in plot 1 which is lower than that in the other twoplots (30-40%). The number of fruit flies captured with cue lurebaited traps correlated positively with all three abiotic factorsstudied. The seasonal fluctuation of the fruit fly population andthe damage to the fruits are necessary to be studied as a procedurein IPM for controlling B. tau.
PENGGUNAAN BAKTERI HALOFILIK SEBAGAI BIOKATALISATOR UNTUK MENINGKATKAN KUALITAS DAN PRODUKTIFITAS GARAM NaCl DI MEJA KRISTALISASI ., Marihati; Harihastuti, Nani; ., Muryati; ., Nilawati; Eddy, Syarifudin; W. H, Danny
Jurnal Riset Industri Vol 8, No 3 (2014): Pemanfaatan Bahan Baku/Penolong Raw Material Dalam Negeri
Publisher : Badan Penelitian dan Pengembangan Industri

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Abstract

Penerapan penggunaan bakteri halofilik sebagai biokatalisator untuk meningkatkan kualitas dan produktivitas garam NaCl di meja garam telah dilakukan pada skala lapangan di Pegaraman III Sampang – Madura. Keberadaan bakteri halofilik mampu meningkatkan kadar NaCl pada proses kristalisasi garam. Tahapan percobaan meliputi: pembuatan nutrisi halofilik berbahan baku tepung Artemia salina dan uji coba pengkayaan bakteri halofilik dan kristalisasi. Luas lahan 300 m2 digunakan untuk meja kristalisasi bakteri halofilik, kolam pengkayaan dan, meja kristalisasi kontrol. Komposisi nutrisi terbaik untuk bakteri halofilik adalah: AS-3 yang terdiri dari tepung Artemia salina = 1,125 gram; air garam tua 20OBe = 450 ml; starter halofilik = 50 ml; gula = 1,5 gram dan urea = 0,5 gram. Uji coba proses kristalisasi di awal musim hujan, menggunakan nutrisi AS-3 pada konsentrasi 28OBe merupakan perlakuan terbaik yang menghasilkan garam dengan kandungan NaCl 98,116%; produktivitas lahan 84 ton garam/Ha/musim. Lahan kontrol menghasilkan garam dengan kandungan NaCl 95,6% dan produktivitas 51 ton garam/Ha/musim.. Kata kunci : biokatalisator, halofilik, kristalisasi NaCl, produktifitas dan kualitas garam
Co-Authors A. Hasyim Danny W. H, Danny Marihati ., Marihati Nani Harihastuti, Nani Nilawati ., Nilawati Syarifudin Eddy, Syarifudin W.J. de Kogel