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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 wa Aunu Rauf
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.

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 numb Aunu Rauf
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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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.

FENOLOGI PEMBUNGAAN DAN KELIMPAHAN POPULASI KEPIK Diconocoris hewetti (DIST.) (HEMIPTERA: TINGIDAE) PADA PERTANAMAN LADA I WAYAN LABA; AUNU RAUF; UTOMO KARTOSUWONDO; M. SOEHARDJAN
Jurnal Penelitian Tanaman Industri Vol 14, No 2 (2008): Juni 2008
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jlittri.v14n2.2008.43-53

ABSTRAKKepik renda lada (KRL), Diconocoris hewetti (Dist.) (Hemiptera:Tingidae) adalah salah satu hama pada pertanaman lada di Indonesia.Hama ini selalu hadir pada perbungaan lada dan bulir bunga lada denganjalan mengisap cairan bunga sebelum menjadi buah. Serangan nimfa danimago pada bunga dan bulir bunga akan mengakibatkan perubahan warnabunga dari hijau kekuningan menjadi cokelat atau hitam. Penelitian inibertujuan untuk mengetahui fenologi pembungaan, kelimpahan populasiKRL, dan tingkat kerusakan bunga pada pertanaman lada. Kelimpahan danfenologi pembungaan lada menentukan kelimpahan populasi KRL.Penelitian dilakukan di kebun petani, di Desa Air Anyir, KecamatanMerawang, Kabupaten Bangka Induk, dari Mei 2003 sampai dengan Mei2004, dan di Desa Puput, Kecamatan Simpang Katis Kabupaten BangkaTengah, dari Oktober 2003 sampai dengan Mei 2004. Luas lahanpercobaan masing-masing sekitar 5000 m 2 yang sudah ditanami ladavarietas Chunuk di Air Anyir dan varietas Lampung Daun Lebar (LDL) diPuput. Umur tanaman masing-masing sekitar 5 tahun. Jumlah pohoncontoh di setiap lokasi 24 pohon. Pengamatan dilakukan setiap minggudengan cara menghitung langsung KRL yang ada pada bulir bunga, sertabanyaknya bunga yang terserang. Pada percobaan lainnya dilakukanpengamatan terhadap perkembangan bulir bunga serta tingkat keguguranfisiologis. Hasil penelitian menunjukkan bahwa pola pembungaan ladavarietas Chunuk dan LDL mengikuti pola curah hujan. Rataan banyaknyabulir bunga berkisar antara 2,63-120,59 tandan per pohon pada varietasChunuk, sedangkan pada varietas LDL antara 4,79-153,84 tandan perpohon. Masa perkembangan bulir bunga fase-1 berlangsung 16,6 hari,fase-2 berlangsung 7,6 hari, dan fase-3 berlangsung 6,4 hari. Tidaksemua bulir bunga dan buah muda berhasil menjadi buah siap dipanen(23,14% pada Chunuk mengalami keguguran fisiologis). Keguguranpaling banyak terjadi pada bulir bunga yang berumur 4-5 minggu(17,62%). Rataan kelimpahan kepik renda lebih tinggi (0,042-1,375ekor/pohon) pada varietas LDL dibandingkan pada varietas Chunuk(0,042-0,333 ekor/pohon), terutama selama periode November hinggaApril. Perkembangan populasi kepik renda pada varietas LDL meningkat(1,375 ekor/pohon) selama bulan November hingga Februari, berhubungandengan banyaknya bulir bunga yang tersedia pada periode tersebut.Berdasarkan nisbah ragam terhadap rataan (s 2 /m), populasi kepik D.hewetti umumnya memperlihatkan pola sebaran acak, sedangkan pada saatpopulasi tinggi (1,375 ekor/pohon) memperlihatkan pola sebaranbergerombol. Persentase bulir bunga terserang pada varietas Chunukberkisar antara 0,06-3,85%, sedangkan pada varietas LDL berkisar antara0,34-17,72%. Terdapat hubungan linear varietas Chunuk dan LDL (r =0,87 dan 0,78) yang nyata antara kelimpahan populasi D. hewetti dankerusakan bunga. Varietas LDL lebih rentan dibandingkan dengan varietasChunuk. Pengendalian KRL dapat dilakukan pada awal pembentukanbunga yaitu sejak November.Kata kunci: Lada, Piper nigrum L., hama, kepik renda lada, Diconocorishewetti (Dist.), kerusakan bunga, kelimpahan populasi,Bangka BelitungABSTRACTFlowering phenology and population abundance ofpepper lace bug, Diconocoris hewetti (Dist.) (Hemiptera:Tingidae) on pepper plantationPepper lace bug (PLB), Diconocoris hewetti (Dist.) (Hemiptera :Tingidae) is one of the insect pests attacking pepper in Indonesia. Thisinsect pest always presents and causes damage to the spikes of pepperinflorescence. The research was conducted to study the floweringphenology of Chunuk and LDL varieties and population abundance ofPLB on pepper plantation. The abundance and inflorescence phenology ofpepper determined PLB abundance. The research was conducted in farmerfields in Air Anyir Village, Sub District of Merawang from May 2003 toMay 2004 and Puput Village, Sub District of Simpang Katis, BangkaIslands, from October 2003 to May 2004. The acreage of the experimentwas about 5000 m 2 for each location with 5 years old of Chunuk and LDLvarieties in Air Anyir and Puput, respectively. Number of plant sampleswere 24 plants for each location. Observation were done every week, forthe population of PLB, the spike and flower damage. Another experimentwas done to study the develop-ment stage of inflorescence and floral lossphysiology. The result indicated that flowering phenology of Chunuk andLDL varieties followed the rainfall pattern. The mean number of spike onChunuk variety varied between 2.63 – 120.59, while that on LDL varietywere 4.79 – 153.84 spikes per tree. The developments period of spikeswere 16.6; 7.6 and 6.4 days for stages 1, 2 and 3 respectively. Not all thespikes became young berries and could be harvested, since there were23.14% inflorescence of the Chunuk variety floral loss naturally. Floralloss occurred mostly when the spikes were 4-5 weeks old (17.62%). Themean number of lace bug density was higher on LDL(0.042-1.375bug/tree) than on Chunuk (0.042-0.333 bugs/tree), especially duringNovember until April. D. hewetti population increased during November-February (1.375 bugs/tree), and it was related to the increase in spikesduring that time. Based on variance-mean ratio (S 2 /m), D. hewettipopulation generally showed a random distribution, but a clumpeddistribution when population density increased (1.375 bugs/tree). Thepercentage of inflorescence damage was between 0.06-3.85% on Chunuk,while on LDL was 0.34-17.2%. There is a linear correlation between PLBand spike damage (r = 0.87 and 0.78 on Chunuk and LDL respectively).LDL variety was more susceptible than Chunuk variety. The study impliesthat controlling PLB has to be done on the beginning of inflorescence inNovember.Key words: Pepper, Piper nigrum L., insect pest, pepper lace bug,Diconocoris hewetti (Dist.), spike damage, populationabundance, Bangka Belitung

PARAMETER KEHIDUPAN DAN DEMOGRAFI KEPIK, Diconocoris hewetti (Dist.) (HEMIPTERA: TINGIDAE) PADA DUA VARIETAS LADA I WAYAN LABA; AUNU RAUF; UTOMO KARTOSUWONDO; M. SOEHARDJAN M. SOEHARDJAN
Jurnal Penelitian Tanaman Industri Vol 12, No 3 (2006): SEPTEMBER 2006
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jlittri.v12n3.2006.121-127

ABSTRAKKepik renda lada (KRL), Diconocoris hewetti (Dist.) (Hemiptera:Tingidae) adalah salah satu hama pada pertanaman lada di Indonesia.Penelitian bertujuan untuk membandingkan berbagai parameter kehidupandan demografi KRL pada dua varietas lada. Pengaruh varietas ladaterhadap parameter kehidupan dan demografi KRL diteliti di rumah kasadan pertanaman lada di Pulau Bangka, sejak Oktober 2003 hingga Februari2004. Penelitian mencakup pengaruh varietas Chunuk dan LDL terhadapmasa perkembangan telur dan nimfa, lama hidup imago jantan dan betina,serta keperidian. Selain itu juga diteliti pengaruh fase bunga, pucuk daun,dan buah muda terhadap lama hidup imago. Pengaruh varietas terhadapberbagai parameter demografi KRL dipelajari dengan memelihara kepikdari sejak telur hingga imago yang muncul meletakkan telur kembali.Hasil penelitian menunjukkan bahwa perbedaan varietas mempengaruhiberbagai parameter kehidupan KRL. Lama perkembangan nimfa 17,3 dan13,0 hari, lama hidup imago jantan 10,2 dan 18,8 hari, lama hidup imagobetina 13,6 dan 16,9 hari, keperidian 13,9 dan 24,5 butir, berturut-turutpada varietas Chunuk dan LDL. Imago KRL hidup lebih lama pada bungafase-3 dibandingkan pada bunga fase-1 atau-2. Laju pertambahan intrinsik(r) 0,0741 dan 0,0827; laju reproduksi bersih (Ro) 6,98 dan 8,52, masagenerasi (T) 26,21 dan 25,91; laju pertambahan terbatas (λ) 1,0769 dan1,0862 berturut-turut pada varietas Chunuk dan LDL. Secara keseluruhan,varietas LDL lebih mendukung kehidupan dan perkembangan populasi D.hewetti. Jika tidak tersedia bunga lada KRL mampu bertahan hidup denganmengisap pucuk daun dan buah muda. Lama hidup imago 12,1 hari dan23,5 hari pada buah muda. Implikasi dari hasil penelitian ini adalahinformasi dasar dalam penelitian untuk pengendalian KRL.Kata kunci: Lada, Piper nigrum L., hama, kepik renda lada, Diconocorishewetti, parameter kehidupan, demografi, Propinsi BangkaBelitungABSTRACTLife parameters and demographic of bug peper laceDiconocoris hewetti (Dist.) (Hemiptera: Tingidae) on twopepper varietiesPepper lace bug (PLB), Diconocoris hewetti (Dist.) (Hemiptera:Tingidae), is one of the insect pests attacking pepper in Indonesia.Research was conducted with the objective to compare various life historyand demographic parameters of PLB on two pepper varieties. The effectof two pepper varieties on various life parameters and demographic ofPLB was conducted in green house and farmer field on Bangka Island,since October 2003 to February 2004. The experiment covered the effectof LDL and Chunuk varieties on eggs and nymphal development, maleand female adults longivity and fecundity. Besides the effect ofdevelopment stage on inflorescence, shoots and young berries to adultslongivity were observed. The effect of varieties to demographic parametersof PLB was studied by rearing the bugs since egg to adult laid eggs. Theresult revealed that difference variety was influenced life history anddemographic parameters of PLB. Nymphal development time of PLB were17.3 and 13.0 days, male adult longivity 10.2 and 18.8 days, female adultlongivity 13.6 and 16.9 days, fecundity 13.9 and 24.5 eggs per female,respectively on Chunuk and LDL. The life history of PLB adult was longeron stage-3 inflorescences than stage-1 or stage-2. The intrinsic rates ofincrease (r) were 0.0741 and 0.0827, net reproductive rate (Ro) 6.98 and8.52, mean generation time (T) 26.21 and 25.91 days, finite rate ofincrease (λ) 1.0769 and 1.0862 on Chunuk and LDLrespectively.Generally, variety LDL was much better food source for thedevelopment of D. hewetti. If there were no inflorescences available, thePLB was able to survive by feeding on shoots or young berries. Adultlongivity was 12.1 days on shoots and 23.5 days on young berries. Theimplication of this research is as the basic information in the next researchfor PLB control.Key words : Pepper, Piper nigrum L., pest, lace bug, Diconocoris hewetti,life parameters, demographic, Bangka Belitung Province

Pathogenicity and Effectiveness of Entomopathogen Nematode Heterorhabditis sp. to Potato Tuber Moth Phthorimaea operculella (Zeller)(Lepidoptera: Gelechiidae) PATOGENISITAS DAN KEEFEKTIFAN NEMATODA ENTOMOPATOGEN Heterorhabditis sp. TERHADAP PENGGEREK UMBI Lufthi Rusniarsyah; Aunu Rauf; Supramana .; Samsudin .
Jurnal Silvikultur Tropika Vol. 6 No. 1 (2015): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.6.1.%p

Potato tuber moth, Phthorimaea operculella Zell. (Lepidoptera: Gelechiidae) is one of the important potato pest. Damage occurs in the field as well as in the storage warehouses. If control is not performed well, the potential loss will reach almost 100%. The effectiveness of entomopathogenic nematodes of the Heterorhabditis has been studied to control several crop pests. Infective juveniles (IJ’s) of nematodes are capable to seek and infect insects that live in soil and in plant tissues. The objectives of the research are to study the pathogenicity of the Heterorhabditis sp. against P. operculella in the laboratory in direct treatment and in the potato tuber. The experiment was employed a completely randomized design with 6 treatments and 4 replications. The treatment tested are the density level of nematodes Heterorhabditis sp. (100, 200, 300, 400, and 500 IJ/ml) and the control. The results showed that P. operculella infected by Heterorhabditis sp. has symptoms of decreasing motion and feeding activity. Dead insects have change color to dark brown and the body become soft. Heterorhabditis sp. can kill P. operculella within 12 hours after application (HAA). At density level 100 IJ/ml it can control P. operculella by 85% within 24 HAA. The mortality rates of P. operculella in the tubers was 35% at doses of 1000 IJ/tubers, although the ANOVA test was not significantly different.Key words: Phthorimaea operculella, entomopathogenic nematodes, Heterorhabditis sp.

KOMUNITAS ARTROPODA PENGHUNI TAJUK DI PERTANAMAN JAGUNG TAMRIN ABDULLAH; NURARIATY AGUS; AUNU RAUF
Agrotrop : Journal on Agriculture Science Vol 1 No 2 (2011)
Publisher : Fakultas Pertanian Universitas Udayana

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Canopy Arthropod Community Dwellers in Maize Planting. Dwellers the canopy arthropod community structure observed in maize planting in the Village Bajeng, District of North Polombangkeng, Takalar District, South Sulawesi. Observation of the canopy arthropod dwellers performed using suction machine. The results showed that the arthropod community on corn cropping consists of arthropod natural enemies, fitofag and other arthropods. Most of the arthropods that act as predators, which consists of four insect family is Formicidae, Coccinellidae, Carabidae, Gryllidae, and the two spider families is Lycosidae and Linyphiidae. Maize crop canopy arthropod dwellers generally is formicid, coccinellid, cicadellid, and pentatomid. In the maize crop canopy, formicid and aphid abundance were higher in the edge plots, whereas coccinellid, lycosid, and linyphiid higher in the center of the plot.

KEEFEKTIFAN BAHAN PELINDUNG ALAMI DALAM MEMPERTAHANKAN INFEKTIVITAS Spodoptera exigua NUCLEOPOLYHEDROVIRUS (SeNPV) Samsudin Samsudin; Teguh Santoso; Aunu Rauf; Yayi Munara Kusumah
BERITA BIOLOGI Vol 10, No 6 (2011)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i6.1932

Spodoptera exigua nucleopolyhedrovirus (SeNPV) is a viral pathogen of onion caterpillar S. exigua with high pathogenicity. One of the major constraints to the use of SeNPV for biocontrol of onion caterpillar is its sensitivity to ultraviolet (UV) degradation. The purposes of this research were to determine the effect of sunlight exposure on the virulence of SeNPV and to find out the effective natural UV protectant to maintain the SeNPV virulence. The results showed that the sunlight radiation affects the SeNPV infectivity. Addition of 1% of coconut shell charcoal, lampblack, husk charcoal, yam flour, molasses, yam filtrate, turmeric filtrate and green tea filtrate to the SeNPV suspension were found to be effective as UV protectant. Coconut shell charcoal, lampblack and husk charcoal are activated carbon that can absorb UV light. Yam filtrate is a natural ingredient that contains saponins and is able to protect SeNPV particles as reflectance. While molasses, turmeric filtrate and green tea filtrate containing flavanoid serve as a protective virus particles and UV absorber.

KEEFEKTIFAN TIGA JENIS INSEKTISIDA NABATI TERHADAP KUTU PUTIH PEPAYA PARACOCCUS MARGINATUS DAN KEAMANANNYA TERHADAP LARVA KUMBANG PREDATOR CURINUS COERULEUS Ahmad Sifa; Djoko Prijono; Aunu Rauf
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 13 No. 2 (2013): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Effectiveness of three botanical insecticides against the papaya mealybug Paracoccus marginatus and their safety to the predatory Curinus coeruleus larvae. Preparations of Tephrosia vogelii (Tv) leaf extract (0.5% and 1% w/v), Annona squamosa (As) seed extract (0.5% and 1%), and Cinnamomum multiforum (Cm) leaf essential oil (1% and 2%), and their mixtures (Mix-1: Tv 0.25% + As 0.25% + Cm 0.5%; Mix-2: Tv 0.5% + As 0.5% + Cm 1%) were tested for their effectiveness on third-instar nymphs of Paracoccus marginatus by spraying the test materials on undetached papaya leaves and by direct spraying on the test insects using Potter spray tower. Tv extract was also applied on the test insects placed on undetached papaya leaves. The safety test was done by direct spraying of the test materials on the predatory Curinus coeruleus larvae using Potter spray tower. Tv and As extracts at a concentration of 1% each are potential to be used for the control of P. marginatus. Spraying of T. vogelii extract on the test P. marginatus nymphs placed on papaya leaves was more effective than spraying of the test materials on papaya leaves or direct spraying on the test insects only. The treatment with Cm essential oil required twice the concentration of Tv and As extracts to obtain the same level of effectiveness. The treatment with Mix-2 caused lower P. marginatus mortality than the sum of mortality caused by its components applied separately. Nonetheless, the three botanical insecticides and their mixtures were safe to C. coeruleus larvae. On the other hand, although the synthetic insecticide imidacloprid (neonicotinoid), included in the study for comparison, was effective against P. marginatus, it was also toxic to the predatory C. coeruleus larvae so its use should be avoided or limited.

Parameter Neraca Hayati dan Pertumbuhan Populasi Kutu Putih Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) pada Dua Varietas Ubi Kayu Nila Wardani; Aunu Rauf; Wayan Winasa; Sugeng Santoso
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 14 No. 1 (2014): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

ABSTRACTThe life history and population growth parameters of mealybug Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on two cassava varieties. The development, reproduction, and population growth parameters of the cassava mealybug, Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae) on two cassava varieties were studied in laboratory. The varieties tested were UJ-5 with high cyanide content (>100 mg per kg) dan Adira-1 with low cyanide content (27.5 mg per kg). Our research revealed that P. manihoti performances were highly affected by cassava varieties. Incubation period of eggs of P. manihoti were 7.93 ± 0.09 and 8.33 ± 0.11 days, nymphal development periode 12.32±0.13 and 15.67 ± 0.13 days, respectively on UJ-5 and Adira-1. Fecundity averaged 386.37 ± 5.83 on UJ-5 and 318.67±2.81 eggs on Adira-1. Intrinsic rate of increase (rm) were 0.258 ± 0.001 on UJ-5 and 0.220 ± 0.001 on Adira-1. Mean generation time (T) on UJ-5 and Adira-1 were 22.795 ± 0.050 and 25.532 ± 0.047 days, repectively. Our findings showed that variety UJ-5 was more suitable for development and population growth of the cassava mealybug.

FENOLOGI PEMBUNGAAN DAN KELIMPAHAN POPULASI KEPIK Diconocoris hewetti (DIST.) (HEMIPTERA: TINGIDAE) PADA PERTANAMAN LADA I WAYAN LABA; AUNU RAUF; UTOMO KARTOSUWONDO; M. SOEHARDJAN
Jurnal Penelitian Tanaman Industri Vol 14, No 2 (2008): Juni 2008
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jlittri.v14n2.2008.43-53

ABSTRAKKepik renda lada (KRL), Diconocoris hewetti (Dist.) (Hemiptera:Tingidae) adalah salah satu hama pada pertanaman lada di Indonesia.Hama ini selalu hadir pada perbungaan lada dan bulir bunga lada denganjalan mengisap cairan bunga sebelum menjadi buah. Serangan nimfa danimago pada bunga dan bulir bunga akan mengakibatkan perubahan warnabunga dari hijau kekuningan menjadi cokelat atau hitam. Penelitian inibertujuan untuk mengetahui fenologi pembungaan, kelimpahan populasiKRL, dan tingkat kerusakan bunga pada pertanaman lada. Kelimpahan danfenologi pembungaan lada menentukan kelimpahan populasi KRL.Penelitian dilakukan di kebun petani, di Desa Air Anyir, KecamatanMerawang, Kabupaten Bangka Induk, dari Mei 2003 sampai dengan Mei2004, dan di Desa Puput, Kecamatan Simpang Katis Kabupaten BangkaTengah, dari Oktober 2003 sampai dengan Mei 2004. Luas lahanpercobaan masing-masing sekitar 5000 m 2 yang sudah ditanami ladavarietas Chunuk di Air Anyir dan varietas Lampung Daun Lebar (LDL) diPuput. Umur tanaman masing-masing sekitar 5 tahun. Jumlah pohoncontoh di setiap lokasi 24 pohon. Pengamatan dilakukan setiap minggudengan cara menghitung langsung KRL yang ada pada bulir bunga, sertabanyaknya bunga yang terserang. Pada percobaan lainnya dilakukanpengamatan terhadap perkembangan bulir bunga serta tingkat keguguranfisiologis. Hasil penelitian menunjukkan bahwa pola pembungaan ladavarietas Chunuk dan LDL mengikuti pola curah hujan. Rataan banyaknyabulir bunga berkisar antara 2,63-120,59 tandan per pohon pada varietasChunuk, sedangkan pada varietas LDL antara 4,79-153,84 tandan perpohon. Masa perkembangan bulir bunga fase-1 berlangsung 16,6 hari,fase-2 berlangsung 7,6 hari, dan fase-3 berlangsung 6,4 hari. Tidaksemua bulir bunga dan buah muda berhasil menjadi buah siap dipanen(23,14% pada Chunuk mengalami keguguran fisiologis). Keguguranpaling banyak terjadi pada bulir bunga yang berumur 4-5 minggu(17,62%). Rataan kelimpahan kepik renda lebih tinggi (0,042-1,375ekor/pohon) pada varietas LDL dibandingkan pada varietas Chunuk(0,042-0,333 ekor/pohon), terutama selama periode November hinggaApril. Perkembangan populasi kepik renda pada varietas LDL meningkat(1,375 ekor/pohon) selama bulan November hingga Februari, berhubungandengan banyaknya bulir bunga yang tersedia pada periode tersebut.Berdasarkan nisbah ragam terhadap rataan (s 2 /m), populasi kepik D.hewetti umumnya memperlihatkan pola sebaran acak, sedangkan pada saatpopulasi tinggi (1,375 ekor/pohon) memperlihatkan pola sebaranbergerombol. Persentase bulir bunga terserang pada varietas Chunukberkisar antara 0,06-3,85%, sedangkan pada varietas LDL berkisar antara0,34-17,72%. Terdapat hubungan linear varietas Chunuk dan LDL (r =0,87 dan 0,78) yang nyata antara kelimpahan populasi D. hewetti dankerusakan bunga. Varietas LDL lebih rentan dibandingkan dengan varietasChunuk. Pengendalian KRL dapat dilakukan pada awal pembentukanbunga yaitu sejak November.Kata kunci: Lada, Piper nigrum L., hama, kepik renda lada, Diconocorishewetti (Dist.), kerusakan bunga, kelimpahan populasi,Bangka BelitungABSTRACTFlowering phenology and population abundance ofpepper lace bug, Diconocoris hewetti (Dist.) (Hemiptera:Tingidae) on pepper plantationPepper lace bug (PLB), Diconocoris hewetti (Dist.) (Hemiptera :Tingidae) is one of the insect pests attacking pepper in Indonesia. Thisinsect pest always presents and causes damage to the spikes of pepperinflorescence. The research was conducted to study the floweringphenology of Chunuk and LDL varieties and population abundance ofPLB on pepper plantation. The abundance and inflorescence phenology ofpepper determined PLB abundance. The research was conducted in farmerfields in Air Anyir Village, Sub District of Merawang from May 2003 toMay 2004 and Puput Village, Sub District of Simpang Katis, BangkaIslands, from October 2003 to May 2004. The acreage of the experimentwas about 5000 m 2 for each location with 5 years old of Chunuk and LDLvarieties in Air Anyir and Puput, respectively. Number of plant sampleswere 24 plants for each location. Observation were done every week, forthe population of PLB, the spike and flower damage. Another experimentwas done to study the develop-ment stage of inflorescence and floral lossphysiology. The result indicated that flowering phenology of Chunuk andLDL varieties followed the rainfall pattern. The mean number of spike onChunuk variety varied between 2.63 – 120.59, while that on LDL varietywere 4.79 – 153.84 spikes per tree. The developments period of spikeswere 16.6; 7.6 and 6.4 days for stages 1, 2 and 3 respectively. Not all thespikes became young berries and could be harvested, since there were23.14% inflorescence of the Chunuk variety floral loss naturally. Floralloss occurred mostly when the spikes were 4-5 weeks old (17.62%). Themean number of lace bug density was higher on LDL(0.042-1.375bug/tree) than on Chunuk (0.042-0.333 bugs/tree), especially duringNovember until April. D. hewetti population increased during November-February (1.375 bugs/tree), and it was related to the increase in spikesduring that time. Based on variance-mean ratio (S 2 /m), D. hewettipopulation generally showed a random distribution, but a clumpeddistribution when population density increased (1.375 bugs/tree). Thepercentage of inflorescence damage was between 0.06-3.85% on Chunuk,while on LDL was 0.34-17.2%. There is a linear correlation between PLBand spike damage (r = 0.87 and 0.78 on Chunuk and LDL respectively).LDL variety was more susceptible than Chunuk variety. The study impliesthat controlling PLB has to be done on the beginning of inflorescence inNovember.Key words: Pepper, Piper nigrum L., insect pest, pepper lace bug,Diconocoris hewetti (Dist.), spike damage, populationabundance, Bangka Belitung

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