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PARASITIZATION OF THE WHITE RICE STEM BORE< SCIRPOPHAGA INNOTATA (WALKER) (LEPIDOPTERA: PYRALIDAE), WAS STUDIED IN KARAWANG DURING AN OUTBREAK IN 1991/1992. THE PERCENTAGE OF EGG MASSES PARASITIZED AVERAGED 85.5%, WHEREAS THE PERCENTAGE OF INDIVIDUAL EGGS PARASITIZED 44.2%. EGG MASSES ATTACKED BY PARASITOIDS YIELDED 1 TO 100 WLTH ARZ AVERAGE OF 53.9 BORER LARVAE. A MEAN OF 56.6PARASITOID WASPS EMERGED FROM THE PARASITIZED EGG MASSES. BASED ON THE PROPORTION OF EGG MASSES PARASITIZED AND THE N Rauf, Aunu
Buletin Hama dan Penyakit Tumbuhan Vol. 12 No. 1 (2000): Buletin Hama dan Penyakit Tanaman
Publisher : Buletin Hama dan Penyakit Tumbuhan

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Abstract

Parasitization of the white rice stem bore< Scirpophaga innotata (Walker) (Lepidoptera: Pyralidae), was studied in Karawang during an outbreak in 1991/1992. The percentage of egg masses parasitized averaged 85.5%, whereas the percentage of individual eggs parasitized 44.2%. Egg masses attacked by parasitoids yielded 1 to 100 wlth arz average of 53.9 borer larvae. A mean of 56.6parasitoid wasps emerged from the parasitized egg masses. Based on the proportion of egg masses parasitized and the number of wasps emerged, the predominant parasitoid was Telenomus rowani Gahan, followed by Trichogramma japonicum Ashmead, and the least was Tetrastichus schoenobii Ferriere. The level of individual egg parasitization was 22.7% for T. japonicum 55.8% for T. rowani, and 92.1% for T. schoenobii. A mean of 66.5 borer larvae survived after attack by T. japonicum, 19.4 lawae by T. rowani, and only 0.8 larvae per egg mass by T. schoenobii. The last mentioned species was the most efJicient and efective parasitoid, and the borer outbreak was considered to be related to the low level of eggparasitization by T. schoenobii.
A FARMER SURVEY, TO DETERMINE THE WAY POTATO FARMERS PERCEIVED THE LEAFININER FLY AND METHODS THEY EMPLOYED TO CONTROL THE PEST, WAS CONDUCTED IN TEN HIGHLAND VEGETABLE PRODUCTION CENTERS IN FIVE PROVINCES JHM JUNE TO SEPTEMBER 1998. THE TOTAL NUMBER OF POTATO FARMERS INTERVIEWED WAS 309. THE STUDY REVEALED THAT THE FARMERS WERE FAMILIAR WITH THE LEAFININER AS A NEW PEST THAT HAVE CAUSED HEAVY DAMAGE SINCE 3-6 YEARS AGO. HOWEVER, ONLY FEW FARMERS (5.5%) WERE KNOWLEDGEABLE THAT L. HUIDOBRENSIS WA Rauf, Aunu
Buletin Hama dan Penyakit Tumbuhan Vol. 11 No. 1 (1999): Buletin Hama dan Penyakit Tanaman
Publisher : Buletin Hama dan Penyakit Tumbuhan

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A farmer survey, to determine the way potato farmers perceived the leafininer fly and methods they employed to control the pest, was conducted in ten highland vegetable production centers in five provinces jhm June to September 1998. The total number of potato farmers interviewed was 309. The study revealed that the farmers were familiar with the leafininer as a new pest that have caused heavy damage since 3-6 years ago. However, only few farmers (5.5%) were knowledgeable that L. huidobrensis was an exotic pest. Most farmers (>75%) reported that leafininer infestation caused more than 40% yield losses, and the crops have to be harvested 2-4 weeks earlier than was the nomal practice. All respondents applied insecticides to control the leafininer twice a week. Insecticides mostly used were pyrethmids and organophosphates. Selection of pesticides was based on farmer's own experiences, other farmers experiences, and based on suggestion jhm pesticide kiosk's owners. Although insecticides were used intensively, most farmers (72%) were dissatisfied with the efficacy of control. Biological control with parasitoids may pegom satisfatorily only if it B accompanied by minimizing insecticide use.
THE RESEARCH WAS CONDUCTED IN SUB-DISTRICT OF CILEDUG (CIREBON) WITH THE OBJECTIVES TO STUDY THE INFEXIATION AND LARVAAL POPULATION DEVELOPMENT ID ONION ARMYWORM. SPODOPTERA EXIGUA (HABNER) (LEPIDOPTERA: NOCTUIDAE), ON SHALLOTS GROWN IN LOWLAND. MONITORING OF EGG MASSES AND LEAF DAMAGE WERE MADE AT 3-4 DAYS INTERNAL WHILE OF LARVAE AT 1 WEEK INTERNAL. OUTBREAK TOOK PLACE DURING THE DRY SEASON OF AUGUST-OCTOBER 1995 WHEN POPULATION DENSITY REACHED 0.8 EGG MASS AND 23 LARVAE PER HILL, AND SUBSEQUE Rauf, Aunu
Buletin Hama dan Penyakit Tumbuhan Vol. 11 No. 2 (1999): Buletin Hama dan Penyakit Tanaman
Publisher : Buletin Hama dan Penyakit Tumbuhan

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The research was conducted in sub-district of Ciledug (Cirebon) with the objectives to study the infexiation and larvaal population development id onion armyworm. Spodoptera exigua (Habner) (Lepidoptera: Noctuidae), on shallots grown in lowland. Monitoring of egg masses and leaf damage were made at 3-4 days internal while of larvae at 1 week internal. Outbreak took place during the dry season of August-October 1995 when population density reached 0.8 egg mass and 23 larvae per hill, and subsequently all hills were heavily damaged. Throughout the rainy season of December 1995-February 1996, egg masses and larvae were difficult to find. Result of hand-picking showed that larval population during dry season was 78 times higher than those of rainy season. Larvae exhibited body color vartations. During the epidemics 80 percent of the larvae were dark whereas,during the endemics only 10 percent, the rest were light green. Level of egg parasitization was 0,9 percent coused by Tricogramma xp. (Hymenoptera; Trichogrammatidae) and telenomus sp. (hy menoptera; sceltonidae ), and larval parasitization 5.7 percent coused by Microplitis sp. (Hymenoptera; Braconidae), Euplectrus sp. and stenomesius sp (Hymeno[tera; Eulophidae), and Peribaea sp. (Diptera; Tachinidae). Low level of parasitization together with the abundance of food supply and dry season were believed to be the main foctors contributing to the population outbreaks. Hand-picking of egg masses and larvae conducted regularly, as practiced by the farmer group in the village of Dukuh wringin (Brebes(, should be adopted as a key activity for mitigating S. exigua infestation during dry season; and therefore, this practice should disseminated to farmers in other areas.
Trips (Thysanoptera: Thripidae) yang berasosiasi dengan tanaman hortikultura di Jawa Barat dan kunci identifikasi jenis Subagyo, Vani Nur Oktaviany; Hidayat, Purnama; Rauf, Aunu; Sartiami, Dewi
Jurnal Entomologi Indonesia Vol 12, No 2 (2015): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.12.2.59

Abstract

Most of thrips from Thripidae family are pests on horticultural crops. To date, there are no records in the species richness of thrips in horticultural crops. The aim of the research is to conduct inventory on thrips spp diversity that are associated with horticultural crops in West Java. Sampling were done in several horticultural crops areas in Bogor, Cianjur, and Lembang (West Bandung). The identification process began with sample slide preparations along with the documentation of the character from each species. The identification was done mainly by using the identification program Oztrips and some other published identification keys. Identification key was built based on diagnosis characters of each species. The results found there were 15 species, that are Ceratothripoides brunneus, C. revelatus, Frankliniella intonsa, Megalurothrips typicus, M. usitatus, Scirtothrips dorsalis, Thrips aspinus, T. coloratus, T. hawaiiensis, T. javanicus, T. malloti, T. palmi, T. parvispinus, T. sumatrensis, and T. unispinus. T. aspinus and C. revelatus were new record for Indonesia.
PERILAKU KUNJUNGAN DAN EFISIENSI PENYERBUKAN HETEROTRIGONA ITAMA (COCKERELL) DAN TETRAGONULA LAEVICEPS (SMITH) (HYMENOPTERA: APIDAE) PADA LABU SIAM A?yunin, Qurrotu; Rauf, Aunu; Harahap, Idham Sakti
Jurnal Ilmu Pertanian Indonesia Vol. 24 No. 3 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (576.66 KB) | DOI: 10.18343/jipi.24.3.247

Abstract

Main insect pollinator of chayote in the neotropics is the stingless bees. In Indonesia, there is no information available on chayote pollination. Research was conducted with the objective to study the flowering phenology of chayote and the role of two specieses of stingless bees Heterotrigona itama (Cockerell) and Tetragonula laeviceps (Smith) (Hymenoptera: Apidae) on chayote pollination. Measurements included the number of staminate and pistillate flowers, volume of nectar and sugar concentration, floral handling time and visitation rate, and fruit set. Chayote plants produced more staminate flowers than pistillate flowers, with the ratio of 18:1. There was no difference in nectar volume and sugar concentration between staminate and pistillate flowers. H. itama and T. laeviceps visited both type of flowers, with the peak of daily visitation were occurred at 08:30-10:30 am local times. There were significant differences in the floral handling time and foraging rate of H. itama and T. laeviceps. Pollen load was significantly higher in H. itama (2137.50±184.49 grains) than those in T. laeviceps (1675.00±110.47 grains). H. itama seemed to deposite more pollen (14.1±4.1 grains) on stigma than T. laeviceps (9.8±3.1 grains). Flowers prevented from insect visits resulted in zero fruit set. Single flower visit by H. itama and T. laeviceps resulted in 60 and 40% fruit set, respectively. Higher percent of fruit set (80-85%) was noticed in open-pollination, suggesting that multiple visits by insect pollinators might increase the chances of successful pollination.
Serangan Arthroschista hilaralis Walk. (Lepidoptera: Pyralidae) pada tegakan jabon (Neolamarckia cadamba [Roxb.] Bosser) di Sumatera Selatan Utami, Sri; Triwidodo, Hermanu; Pudjianto, Pudjianto; Rauf, Aunu; Haneda, Noor Farikhah
Jurnal Entomologi Indonesia Vol 15, No 1 (2018): March
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.15.1.1

Abstract

Serangan hama merupakan masalah utama yang dihadapi dalam budi daya jabon (Neolamarckia cadamba [Roxb.] Bosser) di Indonesia khususnya di Sumatera Selatan. Arthroschista hilaralis Walk. (Lepidoptera: Pyralidae) merupakan salah satu hama penting yang menyerang tanaman jabon. Informasi mengenai tingkat serangan A. hilaralis pada tegakan jabon diperlukan sebagai bahan pertimbangan pengelolaan A. hilaralis. Tujuan penelitian ini adalah mengkaji insidensi dan intensitas serangan A. hilaralis yang menyerang tegakan jabon umur 2 dan 4 tahun selama 2 musim pengamatan, serta mengkaji pengaruh faktor cuaca (suhu dan kelembaban udara) terhadap serangan A. hilaralis. Penelitian ini dilaksanakan pada 6 lokasi yang terletak pada beberapa daerah di Sumatera Selatan. Pada setiap lokasi penelitian ditentukan 3 plot masing-masing seluas 0,03 ha dan berisi 20 tanaman jabon. Pengamatan insidensi dan intensitas serangan A. hilaralis dilakukan sebulan sekali selama 16 bulan yang mewakili 2 kategori waktu pengamatan, yaitu musim hujan dan musim kemarau. Hasil penelitian menunjukkan bahwa serangan A. hilaralis paling tinggi terjadi pada tegakan jabon umur 2 tahun dan pada musim hujan dengan insidensi dan intensitas serangan masing-masing sebesar 74,45% dan 55,21%. Faktor cuaca (suhu dan kelembaban udara) berpengaruh terhadap tingkat serangan A. hilaralis. Suhu udara berkorelasi negatif terhadap insidensi (r = -0,629; p = 0,009) dan intensitas serangan A. hilaralis (r = -0,546; p = 0,029), sedangkan kelembaban udara berkorelasi positif terhadap insidensi (r = 0,900; p < 0,0001) dan intensitas serangan A. hilaralis (r = 0,768; p = 0,0005).
Parameter demografi Opius chromatomyiae (Hymenoptera: Braconidae) pada lalat pengorok daun Liriomyza Huidobrensis (diptera: agromyzidae) Rustam, Rusli; Rauf, Aunu; Maryana, Nina; Pudjianto, Pudjianto; Dadang, Dadang
Jurnal Entomologi Indonesia Vol 4, No 2 (2007): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.4.2.75

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Opius chromatomyiae (Hymenoptera: Braconidae) is an endoparasitoid attacking leafminers in the field. The objective of the research is to study the statitiscal demographic of the parasitoid. Result showed that female lifespan (9.95 days) was shorter than male (11.73). Female fecundity was about 104.73 eggs. with rate of egg production per day was about 9.31 eggs. This parasitois was also found to be female-biased sex ratio. Regarding population parameter, net reproduction rate (Ro) was about 28.55, of increase (λ) 1.23. The stable age of Opius chromatomyiae was about 37.93% eggs, 24.92 % larval, 20.36 % pupae and 16.78 % adult.
Ritme aktivitas penerbangan harian Tetragonula laeviceps (Smith) (Hymenoptera: Apidae) di Bogor Yustia, Indah Putri Januar; Rauf, Aunu; Maryana, Nina
Jurnal Entomologi Indonesia Vol 14, No 3 (2017): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.14.3.117

Abstract

Tetragonula laeviceps (Smith) adalah salah satu spesies lebah tak bersengat yang paling umum dijumpai di Indonesia. Namun demikian, tidak banyak publikasi tersedia tentang ritme aktivitas penerbangan T. laeviceps. Penelitian ini bertujuan mengkaji aktivitas penerbangan T. laeviceps dalam kaitannya dengan waktu harian dan berbagai unsur cuaca. Tiga koloni diamati setiap jam selama 5 menit dari pukul 06:00 hingga 18:00 WIB. Pengamatan meliputi banyaknya T. laeviceps yang keluar sarang, masuk sarang, membawa polen, membawa resin, dan membuang sampah. Hasil penelitian menunjukkan bahwa aktivitas penerbangan berbeda nyata (P < 0,001) di antara jam-jam pengamatan. Secara umum, preferensi waktu (akrofase) aktivitas penerbangan terjadi pada pukul 11:00–12:00 WIB. Banyaknya T. laeviceps yang keluar dan masuk sarang berkorelasi positif (sedang) dengan suhu udara dan intensitas cahaya, tetapi berkorelasi negatif (sedang) dengan kelembapan relatif.
Kutudaun (Hemiptera: Aphididae) pada gulma di sekitar lahan pertanian di Jawa Barat beserta kunci identifikasinya Maharani, Yani; Hidayat, Purnama; Rauf, Aunu; Maryana, Nina
Jurnal Entomologi Indonesia Vol 15, No 2 (2018): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.15.2.68

Abstract

Aphids (Hemiptera: Aphididae) are considered as one the most important pest in the world. Some species of aphids were reported as serious pests and plant virus vectors, especially on horticultural crops. Weeds in the agricultural area can serve as an alternative hosts for some aphids which are plant pests or plant virus vectors. The objective of this research was to identify aphid species of weeds in the agricultural production area in West Java and to provide the identification key. Aphids collection was done on the weeds in the agricultural fields in 9 districts of West Java. Aphids were collected from 13 species (5 families) of weeds. The identification of aphid was peformed based on the adult specimens. The research manased to come up with 12 species of aphid on weeds. Three of the 12 collected species were Epameibaphis frigidae (Oestlund), Metopolophium dirhodum (Walker), and Pseudaphis sijui (Eastop) has never been reported in West Java. Six species were known as vectors of plant viruses in agricultural crops. The most commonly found aphid species was Schizaphis graminum (Rondani) in the yard grass (Eleusine indica).
Analysis of Factors Influencing Adoption of Technology in Cocoa Pod Borer Pest Control: A Case Study in West Sulawesi ., Herman; Hutagaol, Parulina; H Sutjahjo, Suharjono; Rauf, Aunu; Priyarsono, D. S
Pelita Perkebunan (Coffee and Cocoa Research Journal) Vol 22, No 3 (2006)
Publisher : Indonesian Coffee and Cocoa Research Institute

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Abstract

Cocoa pod borer is one of the most difficult pests to be controlled, hence it becomes serious threat for sustainable cocoa plantation. The objective of the research is to investigate several factors influencing adoption of innovation technology in pest control by using regression model analysis. The research was carried out in Polewali Mamasa and Mamuju regency, West Sulawesi during February March 2006 using survey method. Number of respondents interviewed in the research was 80 people which was selected by using purposive sampling method. The result shows that CPB in West Sulawesi decreased cocoa productivity 50% (10—90%), caused by less of farmers coordination in controlling CPB and the slowness of technology adoption. Factors which influence farmers knowledge are provision of field school, farmers income and simplicity of the technology. Factors which influence farmers attitude are farmers income knowledge, cultivated cocoa area, provision farmers group and number of family members. Factors which influence farmer action in PsPSP technology adoption is farmer attitude, farmer income, cultivated cocoa area and availability of extension workers in that area. Government’s involvement in accelerating adoption of innovation technology, especially in preparing capable extension workers and provision of subsidized credit for the farmers is inevitable. Key words: cocoa pod borer, adoption of technology, sustainable cacao plantation, Government’s involvement, West Sulawesi