bluuebunny/crossref_metadata_2025_split huggingface dataset:
IDENTIFIKASI DINI GALUR KACANG TANAH YANG RESISTEN TERHADAP INFEKSI SCLEROTIUM ROLFSII HASIL SELEKSI IN VITRO DENGAN FILTRAT KULTUR S. ROLFSII
Authors: Yusnita Yusnita , Widodo Widodo , Megia Rita , Aswidinnoor Hajrial , Sudarsono Sudarsono 
Published: January 2021

Early Identification of Sclerotium rolfsii Resistant Lines of Peanut Derived from In Vitro Selection Using S. rolfsii Culture Filtrates. The objectives of this experiment was to evaluate methods for early identification of Sclerotium rolfsii resistant lines derived from fungal culture filtrate (CF)-insensitive somatic embryos (SE) and to correlate the results of early identification with that of direct S. rolfsii inoculation in the plastic house. In the first method, shoots regenerated from CF-insensitive SE were planted onto selective medium containing 30% of S. rolfsii CF for one month and then responses were evaluated. In the second method, leaves and leaflets of R0 peanut lines derived from CF-insensitive SE were inoculated with S. rolfsii by detached leaf-dual culture test. The damages of the inoculated leaves and leaflets were assessed 6 days after inoculation. A number of R1 plants were grown in the plastic house from seeds harvested from R0 peanut lines, and they were inoculated with S. rolfsii at 30 days after planting (dap). Responses of the inoculated R1 plants were observed at 44 dap. Results of the experiment indicated that shoots from CF-insensitive SE showed less damage scores (DS=1.2), when cultured on CF-containing selective medium than ones from non-selected SE (DS=2.9). Most of the detached leaves and leaflets inoculated with S. rolfsii totally necrosed. However, leaves and leaflets from 7 out of 23 R0 lines showed variegation between necrosed and healthy tissues, indicating the presence of S. rolfsii resistant tissue among the tested leaves and leaflets. Direct inoculation of R1 plants in the plastic house showed 10 out of 18 progenies derived from 6 R0 lines showed less disease severity scores (DSS=2 or 3) and they were able to survive and produce seeds. On the other hand, seed derived (original) peanut plants cv. Kelinci inoculated with S. rolfsii all showed DSS=5 and died after inoculation. The overall results of the experiment indicated the usefullness of in vitro selection using S. rolfsii culture filtrates for regenerating S. rolfsii resistant peanut variants and the possible use of methods for early identification of desirable variants.
SEDIAAN INSEKTISIDA CALOPHYLLUM SOULATTRI: AKTIVITAS INSEKTISIDA DAN RESIDU TERHADAP LARVA CROCIDOLOMIA PAVONANA DAN KEAMANAN PADA TANAMAN
Authors: Syahputra Edy , Prijono Djoko 
Published: January 2021

Insecticide Preparation of Calophyllum soulattri: Insecticidal and Residual Activity Against Crocidolomia pavonana and Its Savety on Crops. Bioassays were done using leaf-residual method with Crocidolomia pavonana larvae as test insect. The number of dead larvae was recorded daily and was analyzed using probit method. The results showed that methanol extract, and dichloromethane fraction of C. soulattri bark possessed strong lethal effect against C. pavonana larvae with LC50 of 0.15%, and 0.05%, respectively. Dichloromethane fraction of 21 EC and 21 WP sprayed in suspension consentration of 1% on potted broccoli plant had residual activity around 16%-26,7% with range of half-lives of 5.9-7.7 days. Dichloromethane fraction at concentration of 0.2% and 0.3% formulated as EC did not cause phytotoxic to broccoli, tomato, chilli, soybean, red bean, onion, cucumber, and maize. Concerning with this potency, further studies are needed to identify insecticidal compounds.
POLA SEGREGASI DAN HERITABILITAS SIFAT KETAHANAN KEDELAI TERHADAP COWPEA MILD MOTTLE VIRUS POPULASI WILIS X MLG2521
Authors: Barmawi Maimun 
Published: January 2021

Segregation and Heritability of Cowpea Mild Mottle Virus Resistant Characters of Soybean Genotypes from Crosses Between Wilis and Mlg2521 Population. This research was conducted within July to October, 2005 at experiment station of Lampung University. The aims of this research were to evaluate the segreation and heritability of resitant characters at F2 population of Wilis x Mlg2521. The result showed that segregation of resistant characters segretate 13:3 of succeptible and resistant genotypes. Heritability in the narrow sense based on disease severity was 13,18% (low) and heritabilitas heritability in the broad-sense was 80,91% (high).
SERANGAN, KEPADATAN POPULASI, DAN KEANEKARAGAMAN SERANGGA PADA PERTANAMAN JAGUNG YANG DIKELOLA DENGAN OLAH TANAH KONSERVASI VERSUS OLAH TANAH KONVENSIONAL DI NATAR, LAMPUNG SELATAN
Authors: Susilo F.X. , Swibawa I Gede 
Published: January 2021

Infestation, population, and diversity of insects in corn fields managed under conservation versus full tillage in Natar, South Lampung. This experimental study that has been conducted during the rainy season of 2000 was aimed to document the attacks, population density and diversity of selected insects in corn fields managed under conservation tillage (sprayed with Roundup herbicide) versus full tillage systems (plowed, no herbicide). Three corn cultivars were planted in four 80 x 60 m plots (larger plots) differing in tillage systems (C7-CT= cultivar C7 grown under conservation tillage system; RRCorn-CT = RRCorn under conservation tillage; C7-FT = C7 under full tillage; Bisma-FT = Bisma under full tillage). All corn seeds were treated with imidacloprid insecticide except those sowed in a control plot (10 x 10 m) that was set up inside the larger plot. Variables being observed were (1) attacks of corn whorl maggots or other organisms, (2) attacks of leaf feeders and cornearworms and (3) diversity of surface active insects and population density of ants + mites. Results show that, first, seed treatment using imidacloprid insecticide could reduce corn whorl maggot attacks only in Bisma-FT. Second, leaf feeder attacks were varied across tillage systems but did not exceed 4% level. Meanwhile, despite apparently high attack of the cornearworm in the field, no significant injury was detected either in the harvested ears or seeds. Third, pitfalls caught at least 66 families of surface-active insects consisting mostly of ants (65%), springtails (12%), mites (8%) and spiders (5%). Tillage systems did not seem to affect the diversity of the surface-active insects. Compared with the other three plots, the RRCorn-CT plot was dwelled by more ants and mites. Ants and mites were both accounted for more seedling failure in the RRCorn-CT plot while corn whorl maggots were responsible for the seedling failure in the Bisma-FT plot.
PENGARUH EKSTRAK RANTING AGLAIA ODORATA LOUR. TERHADAP PERKEMBANGAN PARASITOID ERIBORUS ARGENTEOPILOSUS (CAMERON) PADA INANG CROCIDOLOMIA BINOTALIS ZELLER
Authors: Sudarmo Sudarmo , Prijono Djoko , Manuwoto Syafrida , Buchori Damayanti 
Published: January 2021

The effect of Aglaia odorata Lour. twig extract on development of a parasitic wasp Eriborus argenteopilosus (Cameron) in its host Crocidolomia binotalis Zeller. This laboratory study was conducted to evaluate the effect of ethyl acetate soluble fraction of methanolic twig extract of Aglaia odorata Lour. (Meliaceae) on the development of a parasitic wasp Eriborus argenteopilosus (Cameron) (Hymenoptera: Ichneumonidae) in its host larvae Crocidolomia binotalis Zeller (Lepidoptera: Pyralidae). Extract treatment was given through the host. C. binotalis larvae were fed broccoli leaves treated with A. odorata extract at LC25, LC50, and LC70, then were exposed to the female adults E. argenteopilosus. Mortality of the parasitized host larvae, survival of immature stages of the parasitoid in the host larvae, and longevity and fecundity of the emerging female parasitoids were recorded. The results showed that combinations of extract treatments (at LC25, LC50, and LC70) and parasitization increased the mortality of the parasitized host larvae (38,4 - 42,7%) more than twice that of the parasitized control larvae. Those extract treatments, however, did not exert any negative effects on developmental time of the parasitoid immature stages nor on some morphological characters, longevity and fecundity of the emerging female parasitoids. Thus, A. odorata extract showed promise to be integrated with the parasitoid for the control of C. binotalis.
GANGGUAN BIOLOGI PADA CROCIDOLOMIA PAVONANA (F.) (LEPIDOPTERA: PYRALIDAE) AKIBAT PERLAKUAN DENGAN EKSTRAK BIJI AGLAIA ODORATISSIMA BLUME (MELIACEAE)
Authors: Cuk Surahmat Erwin , Prijono Djoko 
Published: January 2021

Biological interferences in Crocidolomia pavonana (F.) (Lepidoptera: Pyralidae) as affected by the treatment with seed extract of Aglaia odoratissima Blume (Meliaceae). The effects of Aglaia odoratissima seed extract on mortality, feeding, development, and reproduction of Crocidolomia pavonana were studied in laboratory. Ground seeds of A. odoratissima were extracted with methanol, the extract obtained was partitioned in n-hexane and 95% aqueous methanol, and the methanol fraction was partitioned further in chloroform and water. The chloroform fraction obtained was used in all tests. In mortality tests, first- and second-instar larvae C. pavonana were fed with extract-treated broccoli leaf discs. The first instars were also used in the test to determine the effect of the test extract on development and fecundity of C. pavonana, while the second instars were also used in antifeedant test. A. odoratissima extract acted relatively slowly and larval mortality mostly occurred in the instar that was given the feeding treatment. This is also reflected by the relatively small difference between LC50 against second+third instar (0.166%) and that against the second instar only (0.175%). The test extract at all concentrations tested also inhibited feeding by C. pavonana larvae. The test extract at 0.471% delayed the development from the first instar to the pupal stage by 2.57 days compared with control. The treatment with the test extract at 0.095-0.471% decreased the fecundity of the females C. pavonana by 8.6-85.6%. Those various biological interferences in C. pavonana caused by the treatment with A. odoratissima extract can result in substantial suppression of the target pest population in the field.
PENGARUH PERLAKUAN BIBIT TERHADAP PERKEMBANGAN PENYAKIT LAYU BAKTERI PADA JAHE (ZINGIBER OFFICINALE)
Authors: Nur Aeny Titik , Feriansyah Feriansyah , Mujim Subli 
Published: January 2021

Effect of seedling treatments on development of bacterial wilt disease of ginger (Zingiber officinale). This experiment was aimed to study the effect of seedling treatment with bactericide on incubation period and disease intensity of bacterial wilt caused by Ralstonia solanacearum on ginger (Zingiber officinale). The experiment was conducted from May to November 2001, and the treatments were set as factorial experiment in completely randomised design. The first factor was the level of bactericide concentrations and the second factor was the length of soaking periods. Each treatment consisted of five plants and was replicated three times. Data were analysed with ANOVA and the means were compared with Duncan test. The results of analysis of variance showed that the interaction of bactericide concentrations with soaking periods was not significantly affected the incubation period and the intensity of bacterial wilt disease of ginger. However, those two factors significantly (P < 0.01) affected the incubation period and the intensity of ginger bacterial wilt disease. Separation of the means by Duncan test indicated that the higher the bactericide concentration, the longer the incubation period. On the other hand, the disease intensity was lowered by the higher concentration. The effect of bactericide concentration 4 g/l was not significantly different from that of 6 g/l. The analysis of variance was also showed that the length of soaking period of ginger seedling in bactericide did not affect the incubation period nor the disease intensity.
INVENTARISASI BEBERAPA MIKROORGANISME TERBAWA BENIH PADI YANG BERASAL DARI TALANG PADANG, KABUPATEN TANGGAMUS, LAMPUNG
Authors: Nurdin Muhammad 
Published: January 2021

Inventory of seed-borne microorganisms on paddy from District of Talang Padang, Tanggamus Lampung. This study was conducted to inventory microorganisms that infected or contaminated paddy seeds from District of Talang Padang, Lampung. Paddy seed samples were obtained by stratified random sampling method. Six villages were chosen from 28 villages, with six farmers from each village. From each farmer were collected 30 gram paddy seeds. Seventy grams seeds used as the work sample in seed health testing were obtained from 1080 gram of the composite sample. Testing method that been used were blotter test and agar test, then followed by growing-on test. Bacteria and seven genera of fungi were found to be associated with paddy seeds from this study. They were Alternaria, Fusarium. Aspergillus, Curvularia, Mucor, Rhizopus and Penicillium. Virus was not obtained in this study.
KEPADATAN POPULASI PREDATOR, PESAING, DAN SIMBION KUTUDAUN PADA TANAMAN KACANG PANJANG PASCAAPLIKASI INSEKTISIDA
Authors: Yasin Nur , Listianingsih Listianingsih , Wibowo Lestari , Susilo F. X. 
Published: January 2021

The population density of Aphis sp., their predators, competitors, and symbionts in longbean field treated with insecticide. This study was aimed to determine the effect of profenofos insecticide application on 1) the population density of Aphis sp., their predators (coccinellids and syrphids), competitor (Empoasca sp.) and symbionts (ants), and 2) the interactions between the aphid and the predator, the aphid and the symbiont, and the aphid and the competitor in the longbean field. The experiment was arranged in completely randomized design with three levels of profenofos treatments (P1= profenofos sprayed weekly, P2= profenofos sprayed biweekly, and K= unsprayed). Each treatment was replicated six times. Population density (insect number/longbean hill) was observed three times a week, totaling 16 observations during the growing season. The result showed that profenofos spray decreased the population density of Aphis sp. Profenofos treatment also suppressed coccinellid, syrphid, Empoasca sp., and ant population. However, the insecticide did not affect the correlation either between Aphis sp. and ant, between Aphis sp. and Empoasca sp., between ant and Empoasca sp., between ant and coccinellids/syrphids, or between Empoasca sp. and coccinellids/syrphids. It was clear from this study that profenofos strengthened the interaction between Aphis sp. and coccinellids. Aphis sp.—syrphid interaction was weekened by biweekly spray of profenofos, but was replenished by weekly spray of the insecticide.
SERANGAN PENGGEREK PADI PUTIH DAN PENAMPILAN AGRONOMIS GALUR-GALUR PADI SAWAH IRIGASI
Authors: Suprapto Suprapto , Widyantoro Widyantoro 
Published: January 2021

The white rice borer (Tryporyza innotata Walker) attack and agronomic traits of low land paddy lines. Field trial evaluation on 10 lines/varieties to observe the white rice borer (Tryporyza innotata Walker) attack and agronomic traits was conducted at AIAT Lampung on wet season of 2004. The trial was conducted in endemic white rice borer area in Rejo Basuki, Seputih Raman District, Central Lampung. Experiment was arranged in a Randomized Block Design with four replications. Variables observed were precentage of plants attack, yield at 14% moisture contents, period of flowering, number of grain, total grain per panicle, number of stem per hill, plants height, maturity, 100 seed weight and vegetative and generative vigors. Results indicated that among the lines/varieties there were significant different on white rice borer incidence. The BP-360e-Mr-79-Pn-2 line showed low incidence of white rice borer, higher number of stem per hill height plant 104.9 cm, total grain per panicle of 5200 kg, 1000 grain weight and good on vegetative and better generative vigor. But no different seed is compared with other lines, the BP-360e-Mr-79-Pn-2 lines showed 49. 9 empty grain per panicle and 80% mature at 105 days harvested.
POTENSI ERIONOTA THRAX SEBAGAI AGEN PENYEBAR PATOGEN PENYEBAB PENYAKIT LAYU BAKTERI PADA TANAMAN PISANG (BLOOD DISEASE BACTERIUM)
Authors: Suharjo Radix , Martono Edhi , Subandiyah Siti 
Published: January 2021

Potential of Erionota thrax to spread the causal agen of banana bacterial wilt (Blood Disease Bacterium). This study was conducted in Gerbosari, Samigaluh, Kulonprogo, Yogyakarta and in the Laboratory of Bacteriology and Entomology, Faculty of Agriculture, Gadjah Mada University, Yogyakarta during December 2002 to June 2003. The aim of this study was to find out the potency of Erionota thrax to spread Blood Disease Bacterium the causal agent of banana blood disease in Indonesia. A field survey was conducted to record the existance of Blood Disease Bacterium in larvae and adult E. thrax. The results show that Blood Disease Bacterium was not found in the larval stage of E. thrax. In the adult of E. thrax, the pathogen was found on the legs, wings, body surface, head and head surface, but it was not found inside the body of E. thrax.
DIVERSITY AND ABUNDANCE OF SOIL-BORNE PATHOGENIC FUNGI IN VARIOUS LAND-USE SYSTEMS IN SUMBERJAYA, LAMPUNG
Authors: Prasetyo Joko , Nur Aeny Titik 
Published: January 2021

Diversity and abundance of soil-borne pathogenic fungi in various land-use systems in Sumberjaya, Lampung. This study was aimed to investigate the effects of land use systems on diversity and abundance of soil-borne pathogenic fungi. Soil samples were collected from Sumberjaya area, West-Lampung, during October 2004. A total of 88 soil samples were collected from seven land use systems: (1) undisturbed forest, (2) disturbed forest, (3) shrub, (4) polyculture coffee, (5) monoculture coffee, (6) food crop, and (7) horticulture crop. The soil samples were laboratory analyzed to isolate and enumerate viable fungal propagules using bioassay procedure by a modified most probable number technique. The results of the study showed that land-use systems had different impacts on diversity and abundance of soil-borne pathogenic fungi. The diversity declined in non-agricultural systems from undisturbed forest to disturbed forest, shrub, and polyculture coffee, and then increased in agricultural systems from polyculture coffee to monoculture coffee, and food crop. In horticulture crop, however, the diversity was lower than that of in food crop system. The abundance had a similar trend except for horticulture crop that showed the highest population. The occurrence of soil-borne pathogens was different across land use systems. Fusarium spp. dominated all land uses, except in shrub that was dominated by Curvularia spp. Botryodiplodia spp. occurred in undisturbed and disturbed forests, decreased in shrub and then disappeared in other land uses. The occurrence of Phytophthora spp. and Pythium spp. was limited in undisturbed and disturbed forest, then disappeared in shrub, in polyculture and monoculture coffee, but increased significantly in food crops. Rhizoctonia sp. only occurred in undisturbed forest.
EFFECT OF ALTITUDE AND WOUNDING ON BLOOD DISEASE PROGRESS OF PLANTAIN
Authors: Hadiwiyono Hadiwiyono , Subandiyah S. , Sumardiyono C. , Widada J. , Fegan M. 
Published: January 2021

Effect of Altitude and Wounding on Blood Disease Progress of Plantain. In the latest decade, the blood disease of banana has spread in almost all provinces in Indonesia and caused wilting of millions banana clusters in several provinces. It is very difficult to control the disease due to the base data about ecology and epidemiology of the pathogen are still poorly understood. This research aimed to evaluate the effect of wounding of inoculation site on blood disease progress of plantain. The experiment was arranged using randomized completely block design It was conducted at three locations with altitude of 100, 1000, and 1600 m above sea levels as replication block. The treatments were wounding, unwounding inoculation site, inoculation, and uninoculation of plantain cv. Kepok Kuning Wounding was applied by stabbing with an injection pin around the corm of 15 stabs/seedling. The seedlings were planted singly in one liter of non sterile soil in plastic bag. Each treatment consisted of 5 seedlings which was replicated 3 times. Inoculation was done by soil drenching of 20 ml bacterial suspension at concentration of 108 cfu/ml two week after planting. The pathogen used for inoculation originated from low land area (about 100 m above sea level). Observation was done weekly for 5 weeks. The variables observed were wilt intensity and area under disease progress (AUDPC). The results showed that blood disease was able to establish at altitude of 1600 m above sea level. The disease progress however was slower that those at 100 and 1000 m above sea level. On wounded seedling, the disease progress was more aggressive than those on unwounded one.
KARAKTERISTIK KOMUNITAS NEMATODA DI PADANG GOLF SUKARAME (PGS) BANDAR LAMPUNG
Authors: Gede Swibawa I , Nur Aeny Titik 
Published: January 2021

ABSTRACTCharacteristic of Nematodes Community at PGS Golf Course Bandar Lampung. Golf course is a unique ecosystem where plant parasitic nematodes inhabit and become important pest because they reduce the quality of the grass. The pest problems on golf course can be indicated by its characteristics of nematode community. Survey on nematodes community at PGS Golf Course Bandar Lampung was conducted from March to December 2004. The objective was to study the characteristics of nematode community in the part of golf courses hole (green, collar, apron, and fairway). Soil samples were taken from five holes each of it consists of green, collar, apron, and fairway, respectiveley. Nematodes extraction was done in Laboratory of Arthropod Pest, Department of Plant Protection University of Lampung. The result showed that at least 50 nematodes genera of 28 families inhabit PGS. The number of plant parasitic nematode genera was higher than the free-living one. The characteristic of nematodes community on green and collar was different than on faiway. Nematode abundance and diversity on green and collar were higher than on fairway. Based on abundance of nematode feeding group, maturity index of free-living nematodes (MI) and that of plant parasitic nematodes (PPI), green and collar part seemed to be more favorable to plant parasitic nematodes than free-living nematodes. The contrary happened for fairway. Four most dominant genera of plant parasitic nematodes on PGS golf course were Helicotylenchus, Hoplolaimus, Criconemella, and Xiphinema.