Garuda - Garba Rujukan Digital

EFEK MORTALITAS DAN PENGHAMBATAN MAKAN BEBERAPA EKSTRAK TUMBUHAN ASAL KABUPATEN MERAUKE, PAPUA TERHADAP LARVA CROCIDOLOMIA PAVONANA (F.) (LEPIDOPTERA: CRAMBIDAE) Mendes, Johana Anike; ., Dadang; Ratna, Endang Sri
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 16, No 2 (2016): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (19.933 KB)

Mortality and feeding inhibition effects of several plant extracts collected from Merauke Distric, Papua againstÂ Crocidolomia pavonana (F.) larvae (Lepidoptera: Crambidae). The objective of this research was to study mortality and feeding inhibition effects of several plants extract species collected from Merauke District Papua as botanical insecticides against Crocidolomia pavonana larvae. Seven plants used in the research were Areca catechu seeds (Arecaceae), Eucalyptus pellita tree barks (Myrtaceae), Myrmecodia pendans tubers (Rubiaceae), Piper aduncum fruits (Piperaceae), Piper betle leaves (Piperaceae), Pandanus conoideus fruits (Pandanaceae), and Zingiber officinale rhizomes (Zingiberaceae). Each plant extract was tested to 2nd instar C. pavonana larvae. The insecticidal activities were assessed including mortality and feeding inhibition activities. Extract concentrations for mortality tests using topical application method were 0,1%, 0,5%, 1%, 2%, and control, while extract concentrations for feeding inhibition tests using choice and no choice methods were 0,25%, 0,5%, 1%, 2%, and control. Each treatment was introduced to ten C. pavonana larvae and replicated five times. The results showed that P. aduncum and P. conoideus fruits extracts gave 100% mortality at 2% rate. Extract of P. betle leaf at 2% rate totally inhibited feeding activity of larvae (100%) using choice method, while extract of Z. officinale rhizome at 2% rate resulted in moderate feeding inhibition effect (75%) using no choice method.Â

EFEK MORTALITAS DAN PENGHAMBATAN MAKAN BEBERAPA EKSTRAK TUMBUHAN ASAL KABUPATEN MERAUKE, PAPUA TERHADAP LARVA CROCIDOLOMIA PAVONANA (F.) (LEPIDOPTERA: CRAMBIDAE) Mendes, Johanna Anike; ., Dadang; Ratna, Endang Sri
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 16, No 2 (2016): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Mortality and feeding inhibition effects of several plant extracts collected from Merauke Distric, Papua againstÂ Crocidolomia pavonana (F.) larvae (Lepidoptera: Crambidae). The objective of this research was to study mortality and feeding inhibition effects of several plants extract species collected from Merauke District Papua as botanical insecticides against Crocidolomia pavonana larvae. Seven plants used in the research were Areca catechu seeds (Arecaceae), Eucalyptus pellita tree barks (Myrtaceae), Myrmecodia pendans tubers (Rubiaceae), Piper aduncum fruits (Piperaceae), Piper betle leaves (Piperaceae), Pandanus conoideus fruits (Pandanaceae), and Zingiber officinale rhizomes (Zingiberaceae). Each plant extract was tested to 2nd instar C. pavonana larvae. The insecticidal activities were assessed including mortality and feeding inhibition activities. Extract concentrations for mortality tests using topical application method were 0,1%, 0,5%, 1%, 2%, and control, while extract concentrations for feeding inhibition tests using choice and no choice methods were 0,25%, 0,5%, 1%, 2%, and control. Each treatment was introduced to ten C. pavonana larvae and replicated five times. The results showed that P. aduncum and P. conoideus fruits extracts gave 100% mortality at 2% rate. Extract of P. betle leaf at 2% rate totally inhibited feeding activity of larvae (100%) using choice method, while extract of Z. officinale rhizome at 2% rate resulted in moderate feeding inhibition effect (75%) using no choice method.

CHARACTERISTICS AND TOXICITY OF NANOEMULSION FORMULATION OF PIPER RETROFRACTUM AND TAGETES ERECTA EXTRACT MIXTURES Nuryanti, Ni Siluh Putu; Martono, Edhi; Ratna, Endang Sri; ., Dadang
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 1 (2018): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Characteristics and Toxicity of Nanoemulsion Formulations of Piper retrofractum and Tagetes erecta Extract Mixtures. Nanotechnology has been used in the developing of botanical insecticide formulation for improving its stability and effectiveness. The research was aimed to make nanoemulsion formulations of Piper retrofractum fruits and Tagetes erecta flowers extracts and to evaluate their toxicity against brown planthopper (Nilaparvata lugens [StÃ¥l]) nymphs. The development of nanoemulsion formulaions was carried out by using the low energy method with inversion phase emulsification.Â The toxicity of the four formulations was tested against brown planthopper nymphs using a contact method. Four nanoemulsion formulations were obtained.Â The study showed that in the developing of the formulations, the type and level of emulsifier materials affected the physical characteristics of formulas, such as stability, surface tension, viscosity, particle size, and particle morphology. The nanoemulsion formulation containing 1% of the mixture of P. retrofractum fruits and T. erecta flowers extracts, 1.75% Triton X-100 emulsifier showed the highest toxic on the brown planthopper nymph, with the LC95 value was 0.15%.Â The study indicates that nanoemulsion formulation of P. retrofractum and T. erecta extracts are potential to be developed as botanical insecticide to control brown planthopper of rice.

AKTIVITAS INSEKTISIDA BAGIAN TUMBUHAN CALOPHYLLUM SOULTTRI BURM.F. (CLU IACEAE) TERHADAP LARVA LEPIDOPTERA Syahputra, Edy; Manuwoto, Syafrida; Darusman, Latifah K; ., Dadang; Prijono, Djoko
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 4, No 1 (2004): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

The objective of this test was evaluate the insecticidal activity of ectract of some parts of Calophyllum soulattri (Clusiaceae) against larvae of three species of Lepidoptera, i. e Crocidolomia pavonana, Plutella xylostela, and Pieris sp.. Extraction of plant materials was done by infusion method using ethanol. The bioassays were conducted by leaf-feeding method. Second-instar larvae were fed extract-treated broccoli leaves of 48 hours, then they were presented with untreated leaves until the surviving larvae larvae reached the fourth-instar stage. The number of dead larvae was recorded daily an larval mortality date were analyzed by probit method. The result showed the gummy bark exudates and bark extract of old and young C. soulattri plants were highly active against C. pavonana. The abrk extact of old C. soulattri plant was also effective against P. xilostella and Pieris sp. The gummy exudates possessed strong insecticidal activity against C. pavonana larvae with LC50 of 0.04% and prolonged the developmental time from second to fourth instar of C. soulattri 2.03-7.25 days compared with control. The bark excudate gave positive respon to alkaloid flavonoid, and tannin test. Futher studies are needed to identify insecticidal compound in those active extracts.

CHARACTERISTICS AND TOXICITY OF NANOEMULSION FORMULATION OF PIPER RETROFRACTUM AND TAGETES ERECTA EXTRACT MIXTURES Nuryanti, Ni Siluh Putu; Martono, Edhi; Ratna, Endang Sri; ., Dadang
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 1 (2018): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Characteristics and Toxicity of Nanoemulsion Formulations of Piper retrofractum and Tagetes erecta Extract Mixtures. Nanotechnology has been used in the developing of botanical insecticide formulation for improving its stability and effectiveness. The research was aimed to make nanoemulsion formulations of Piper retrofractum fruits and Tagetes erecta flowers extracts and to evaluate their toxicity against brown planthopper (Nilaparvata lugens [Stål]) nymphs. The development of nanoemulsion formulaions was carried out by using the low energy method with inversion phase emulsification. The toxicity of the four formulations was tested against brown planthopper nymphs using a contact method. Four nanoemulsion formulations were obtained. The study showed that in the developing of the formulations, the type and level of emulsifier materials affected the physical characteristics of formulas, such as stability, surface tension, viscosity, particle size, and particle morphology. The nanoemulsion formulation containing 1% of the mixture of P. retrofractum fruits and T. erecta flowers extracts, 1.75% Triton X-100 emulsifier showed the highest toxic on the brown planthopper nymph, with the LC95 value was 0.15%. The study indicates that nanoemulsion formulation of P. retrofractum and T. erecta extracts are potential to be developed as botanical insecticide to control brown planthopper of rice.

AKTIVITAS INSEKTISIDA EKSTRAK TITHONIA DIVERSIFOLIA (HEMSL.) A GRAY (ASTERACEAE) TERHADAP ULAT DAUN KUBIS PLUTELLA XYLOSTELLA (L.) (LEPIDOPTERA: YPONOMEUTIDAE) Firmansyah, Efrin; ., Dadang; Anwar, Ruli
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 17, No 2 (2017): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Insecticidal activity of extracts of Tithonia diversifolia (Hemsl.) A. Gray (Asteraceae) against the diamondback moth Plutella xylostella (L.) (Lepidoptera: Yponomeutidae). The diamondback moth, Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) is one of the most destructive pests on cruciferous plants. Generally farmers use synthetic insecticides to control this pest. Intensive and excessive use of insecticides can cause some undesirable effects such as resistance, resurgence, and contamination of insecticide on environment. One effort to solve the problems caused by synthetic insecticides use is by utilization of botanical materials that are potential to be used as botanical insecticides, one of them is Tithonia diversifolia (Asteraceae). The purpose of this research was to study the insecticidal activity of T. diversifolia as a botanical insecticide against P. xylostella. The leaf residual and topical application methods were used to assess the mortality effect of the extracts. Insect mortality rate was analyzed using probit analysis to obtain LC50 and LC95 values. The results showed that the flower extract had better activity on insect mortality than the leaf extract both in leaf residual and topical application treatments.

Swietenia mahogany Jacq. (Meliaceae) seeds were extracted with methanol. In choice and no-choice leaf disc methods, the crude extract at 5% completely inhibited feeding activity of third instar larvae of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Yponomeutidae). Fractionation of the extract by combination of counter-current distribution method, silica gel column chromatography and preparative TLC yielded one fraction which strongly inhibited P. xylostella larval feeding activit Dadang .; Kanju Oshawa
Buletin Hama dan Penyakit Tumbuhan Vol. 12 No. 1 (2000): Buletin Hama dan Penyakit Tanaman
Publisher : Buletin Hama dan Penyakit Tumbuhan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Swietenia mahogany Jacq. (Meliaceae) seeds were extracted with methanol. In choice and no-choice leaf disc methods, the crude extract at 5% completely inhibited feeding activity of third instar larvae of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Yponomeutidae). Fractionation of the extract by combination of counter-current distribution method, silica gel column chromatography and preparative TLC yielded one fraction which strongly inhibited P. xylostella larval feeding activity by 98.3 % at a concentration of 0.2%.

Studi Populasi Mikrob Fungsional pada Tanah Gambut yang Diaplikasikan Dua Jenis Pestisida MAIPA DIA PATI; SYAIFUL ANWAR; RAHAYU WIDYASTUTI; DADANG .
Jurnal Sumberdaya Hayati Vol. 2 No. 1 (2016)
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.2.1.7-12

Agricultural land expansion necessity for food security in Indonesia has been faced by the fact in utilizing marginal land such as shallow peat soil in Central Kalimantan. Among problems encountered in such marginal land are pests and diseases incidence. Farmers practice in dealing with those problems is the chemical pesticides application. Unintended chemical pesticides that fall on/into the soil might have an adverse effect to soil microbes activity. This research aimed to assess the effect of pesticides on functional soil microbes population in peat soil. The research used completely randomized factorial design with two factors. First factor was 7 combinations of types (paraquat and buthylphenylmethyl carbamat (BPMC)) and dosages (50, 100, and 200% of recommended dosage) of pesticides. Second factor was 4 incubation times (1, 7, 14, and 28 days). Following the each of incubation times, the soil samples treated and analyzed for population of phosphate solubilizing microbes, cellulolytic microbes, and N2 fixing bacteria. The results show that phosphate solubilizing fungi population decrease by pesticides treatment. In contrast, pesticides significantly increased the Azospirillum population. Adverse effect to microbes population was found on the first day of incubation, however it recovered at 7 days and longer incubation times. In general, functional microbes population with paraquat application lower than BPMC application.

Study on Disinfestation of Fruit Fly (Bactrocera dorsalis) Using Vapor Heat Treatment on Gedong Gincu Mango Rokhani Hasbullah; Dadang .; Elpodesy Marlisa
Jurnal Keteknikan Pertanian Vol. 23 No. 1 (2009): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.023.1.%p

Since the prohibition of chemical method for insect disinfestations processes such as ethylene dibromide in 1984, heat treatment method was developed as quarantine technology. One of the heat treatment methods is vapor heat treatment (VHT). The objectives of this research were to study mortality of fruit fly (Bactrocera dorsalis) and to study the responses of VHT on quality of gedong gincu mango. Fruit fly mortality due to heat has been investigated by immersing fruit fly eggs into heated water at temperatures of 40, 43, 46 and 49OC for 30 minutes immersed, also at temperature of 46OC for 5, 10, 15, 20, 25 and 30 minutes. Gedong gincu mangoes were treated at temperature 46.5OC for 0, 10, 20, and 30 minutes. The results showed that mortality has been achieved 100% at temperature more than and equal to 43OC for 30 minutes and attemperature 46OC for more than and equal to 10 minutes. The VHT has significantly and fungi population although without adversely affecting to the fruit quality and there were no significant change in the fruit weight loss, hardness, color, soluble solid content, water content, vitamin C and organoleptic test. VHT at temperature 46.5OC for 20 up to 30 minutes were effective to kill fruit flies inside mangoes and were able tomaintaining mango quality during storage.Keywords : mango, fruit fly, disinfestations, vapor heat treatmentDiterima: 24 Maret 2008; Disetujui: 22 Oktober 2008

KERENTANAN WERENG BATANG COKELAT (NILAPARVATA LUGENS) DARI ENAM LOKASI DI PULAU JAWA TERHADAP TIGA JENIS INSEKTISIDA Erwin Cuk Surahmat; Dadang .; Djoko Prijono
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 16 No. 1 (2016): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Susceptibility of the rice brown planthopper (Nilaparvata lugens) from six locations in Java to three insecticides. The rice brown planthopper (BPH), Nilaparvata lugens (StÃ¥l) (Hemiptera: Delphacidae), is one of the important rice pests in Indonesia. Despite relatively frequent use of insecticides to control this pest, data on BPH resistance to insecticides commonly used by farmers in Indonesia is scarce. This study was conducted to assess the susceptibility of BPH from six locations in Java to three insecticides, i.e. BPMC, imidacloprid, and pymetrozine, and to find out the historical use of insecticides by rice farmers. The first laboratory generations of BPH adults were subjected to insecticide treatments using a leaf dip residual method as described in IRAC Method No 005. Resistance factor (RF) for BPMC and imidacloprid was determined by comparing LC50 of each insecticide against BPH field populations with that against the reference population, whereas the susceptibility of BPH to pymetrozine was assessed based on inhibition of BPH population development. The three insecticides used in this study were commonly used by farmers in the six sampling locations and those insecticidesÂ were mostly used twice per rice growing season. BPH populations from all six locations as well as the reference population were susceptible to pymetrozine in which the treatment with pymetrozine at 50 ppm (one-fifth of the recommended field rate) caused 100% inhibition of BPH population development. BPH from five locations showed resistance to imidacloprid (RF > 4), but that from Pasuruan did not (RF 2.0). BPH from Indramayu was resistant to BPMC (RF 6.6) whereas those from the other five locations were not (RF < 4). Exposure of the reference population to a sublethal dose of insecticides (LC50 or IC50) decreased the susceptibility of the third BPH generation to pymetrozine and BPMC but not to imidacloprid.

Title

Found 11 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 11 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 11 Documents
Search