Jurnal Agroekoteknologi
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UJI KETAHANAN 10 TANAMAN PADI VARIETAS LOKAL BANTEN TERHADAP PENYAKIT HAWAR DAUN BAKTERI (Xanthomonas oryzae pv. oryzae) PADA FASE PERSEMAIAN
Get PDFBacterial leaf blight disease is an economically important disease for the growth of rice plants. The research was aimed to know the most resistant varieties to bacterial (Xanthomonas oryzae pv. oryzae) in seedling phase. The research was conducted May up to Juli 2012 at Green House Livestock, Agriculture and Horticulture UPTD Serang city. The research used a Randomized Completely Blok Design (RCBD) with one factor, each one tray planted 3 varieties. Test varieties were planted in the middle, on the right was susceptible variety (IR-64) and to the left of the comparison resistant variety (Conde). Each variety was planted 10 seeds, so there were 30 rice stalks. There were 10 trays experiment, with 3 replications. Overall there were 30 trays trial. Results of research showed that from 10 varieties had tested, levels of resistance to bacterial leaf blight disease (BLB) in seedling phase were: (1) Waler 17,56 %, (2) Tambleg 18,46 %, (3) Kewal Bulu Hideng 20, 43 %, (4) Gadog 20,84 %, (5) Jaketra 21,58 %, (6) Kewal Cere 23,65 %, (7) Ketan Laleur 25,80 %, (8) Jalawara Hawara 26,29 %, (9) Ketan Solo 29,20 %, (10) Kewal Gudril 29,93 %. The fastest BLB incubation period was local variety of Kewal Gudril within 4-5 days.Key words : Local Varieties of Banten, Bacterial Leaf Blight, Xanthomonas oryzae pv. oryzae, Resistance and Disease Intensity
SERANGGA HERBIVORA YANG BERASOSIASI PADA TANAMAN JAGUNG DENGAN JENIS PUPUK BERBEDA
Get PDFThis research aims to determine the indirect influence of fertilizers on the population and diversity of herbivorous insects in sweet corn varieties super sweet. The research was conducted from the month from May to September 2011 in the Pakel , Gelam village, Kelurahan Cipocok Jaya, Kota Serang. Experiments used designed randomized block design (RBD). The data were analyzed by Anova and DMRT 5%. The herbivour diversity analized by Shannon diversity index. Experimental variable is the type of fertilizer, compost siam weed at a dose of 45 tons / ha, with a dose of manure 45 t / ha, and synthetic fertilizer consisting of urea at a dose of 400 kg / ha, SP36 and KCl dose of 150kg/ha dose 150kg / ha and the control of maize without fertilizer. The fourth variable is repeated 6 times. Observations were made every 2 weeks for orders, families and populations of plant-feeding insects (herbivores) by directly counting the insects which at that time was on the plant. The results showed that the type of fertilizer is not directly influenced by the high population of herbivorous insects. Plants are fertilized siam weed compost herbivore species diversity is high, but their population is foreign-low type. While NPK fertilized plants herbivoranya low diversity and population of each type of the highest good in sucking and biting insects pencucuk chewers. Associated herbivorous insects on corn consists of groups biter chewers like grasshoppers (Acrididae) and pencucuk like ticks sucking aphids (Aphididae).Keywords: fertilizer, herbivores, compost, corn, Acrididae, Aphidida
PENGARUH PEMBERIAN KOMPOS GULMA SIAM (Chromolaena odorata) TERHADAP POPULASI LALAT BUAH PADA TANAMAN CABAI
Get PDFABSTRACTThis research aimed at knowing the potentials of composed siam weed (Chromolaena odorata) for enhancement of crops performance and its effect to fruitflies population’s to chili crops. The research was carried out at the experimental plantation of Agriculture Faculty, Gadjah Mada University, Banguntapan, Bantul, Yogyakarta from Oktober 2009 up to Maret 2010.This research used Randomize Complete Block Design used with 4 treatments, i.e., composed siam weed 40 ha-1 (G), dunk manure of cow 40 ha-1 (S), NPK (N) (Urea N 46% 40 kg/1000 m2, SP 36 20 kg/1000 m2, and KCL 20 kg/1000 m2), and without fertilizer as control (K) were 4 treatmens to repeated 6 time. Observation of arthropods population was taken with interval of 1 week. Crops samples observed were consisted of 2 plants per treatment. Crops performances observed were fruit number, fresh weight and dry weight of fruit, fresh weight and dry weight of crops. Totals N-leaf was analyzed on generative phases of the crops.Composed siam weed can not increased damage of herbivores if compared with other treatment, it’s indicated that highest of weigh of fruits and weight of crops. The result of research indicated that composed siam weed if compared with NPK and dunk manureof cow, that composed siam weed can not increased frutflies population. It suggest fruitflies prefer nutrition on fruit to secondary compound in chili crop.Key words: fruitflies, population, siam weed, chili
Pewarisan Karakter Daya Simpan Benih Kedelai pada Kondisi Suhu Ruang (25°C)
Get PDFABSTRACTThe objective of the research was to obtain information on inheritance of characters related seed soybean storability. Genetic material used were 10 varieties and 10 breeding lines. The research was arranged in randomized completely block design with three replicates. The results showed that all characters observed was significantly affected by genotypes. Electrical conductivity showed the highest heritability among the characters observed. Some genotypes (B.3749, B.3641, Tanggamus, and Burangrang) showed good storability after 2 month stored period under room temperature conditions.Key words: soybean, seed storability, heritabilit
IDENTIFIKASI KOMPONEN KIMIA ASAP CAIR TEMPURUNG KELAPA DARI WILAYAH ANYER BANTEN
Get PDFLiquid smoke is the vinegar of biomass pyrolysis process. Cellulose, hemicelluloses and lignin would be degraded into phenol compounds, carbonyls and organic acids that serves as a flavor enhancer and as an antifungal and antibacterial. The purpose of this study was to determine the chemical components in the liquid smoke from Anyer Banten region. This study is divided into two phases, namely phase pyrolysis of coconut shells at 300oC, 400oC and 500oC, pyrolysis time is 2, 3 and 4 hours, and coconut shell size 6-10 mm, 4-6 mm, and 1.6 - 4 mm. This stage produces dark red liquid, so do the second stage distillations process to obtain a pure liquid smoke. Liquid smoke with the greatest yield was analyzed using gas chromatography mass spectrometry (GCMS) QP.2010S Shimadzu. Based on the results of the study there were 11 chemical components were identified, the largest component is 46.56% acetic acid and phenol at 12.93%.Keywords: Liquid smoke, coconut shell, pyrolysis, acetic acid, pheno
VIRULENSI JAMUR ENTOMOPATOGEN CORDYCEPS MILITARIS DARI BERBAGAI MEDIA TUMBUH TERHADAP LARVA TIRATHABA RUFIVENA WLK. (LEPIDOPTERA : PYRALIDAE)
Get PDFThis research was done to know virulence of entomophatogenic fungus from some growth medium to larvae Tirathaba rufivena Wlk. This research was held in Laboratory of soil and agroecology Faculty of Agriculture, Sultan Ageng Tirtayasa University from November 2011 to June 2012. Cordyceps militaris is derived the palm plantation PTPN VIII Cisalak baru garden, District Curug Lebak-Banten. This reserach used non faktorial Completely Randomized Design (CRD) with 3 various medium (corn, rice, brand) and repeated 9 times. Monitoring parameter toward hyphal diameter growth, number of colony, and mortality larvae Tirathaba rufivena. Result show that the best Cordyceps militaris medium culture was rice medium regarding to hyphal diameter growth about 0,53 cm at 7 HSI, 2,01 cm at 14 HSI and 3,31 cm at 21 HSI, number of colonies 446,33, virulence (LT50) 2,5 week and, 55,52% mortality at 2 MSI, 92,57% at 3 MSI dan 100% at 4 MSI.Keyword : Cordyceps militaris, Tirathaba ruvivena,Virulence, Mortality
EFEKTIVITAS EKSTRAK TUMBUHAN MENGELIMINASI Clavibacter michiganensis Saubsp. Michiganensis DAN MEMPERTAHANKAN MUTU FISIOLOGIS BENIH TOMAT
Get PDFThe objectives of the experiment were to evaluate effectiveness of seed treatments to eliminate Cmm of infected tomato seed lot, evaluate physiological quality of Cmm infected tomato seed lot after treatments with plant extracts. The research used curcuma rhizomes, betel vine leaf extract, cinnamon and clove oil to eliminate Cmm in tomato seed. Part of the seeds were dipped in either suspension of curcuma rhizomes, betel vine leaf extract, cinnamon and clove oil for 20 minutes and the others were matriconditioned using a mixture of burned rice hull (at 22 0C and RH 60-70%) plus either of plant extracts or oils. Elimination of Cmm from infected seeds was observed 10 days after treatments, and physiological seed qualities were evaluated before and after seed treatments. Results of the experiment indicated, dipping infected seeds in either 5% of curcuma, betel vine extract, cinnamon oil or 0.5% of clove oil suspension or matriconditioning plus either these extracts, eliminated 99% of infected Cmm on tomato seeds. Seed treatments using plant extracts for elimination of Cmm did not reduce seed germination, germination rate, vigor index, and did not increase time to reach 50% total germination (T50) of infected tomato seed except the seed treatment by using 5% cinnamon oil with or without matriconditioning.Key words: plant extracts, physiological quality, seed viability, vigo
PENGARUH KOMPETISI ALANG-ALANG (Imperata cylindrica L.) DENGAN PUPUK K TERHADAP PERTUMBUHAN DAN HASIL TANAMAN KACANG HIJAU (Phaseolus radiatus L.)
Get PDFThe research aimed to know the influence of competition with weeds K fertilizer on the growth and yield of green bean plant, has been held in the shadow home Crop Science Study Program Graduate of Sriwijaya University, from September to December 2010. The designs used in this study were factorial randomized block design with three replications. The first factor is rhizome reeds: R1 = 0, R2 = 2, R3 = 4, R4 = 6, R5 = 8 rhizome polybag-1. Factor II doses of fertilizer K, K1 and K2 = 0 g = 1.25 g KCl polybag-1. The results showed that the growth and yield of green beans decreased with the increasing number rhizome weeds that compete, either with or without fertilizer K fertilizer K. But with the growth and yield of K fertilization gives better results than without fertilizer K.Key words: competition, weed, fertilizer K, green bean
PERTUMBUHAN DAN HASIL KEDELAI (Glycine max L.) PADA BERBAGAI CARA PEMBERIAN DAN DOSIS PUPUK UREA
No full textThe experiments were conducted to determine soybean growth and yield responses to various ways of placement and dose of urea fertilizer. Experiments using a randomized block design factorial, with four replications. The first factor is the ways of placement of urea consists of two levels, namely: be placed next to the planting hole and placed along the bolt in between the rows of plants. The second factor is the dose of urea fertilizer consists of four levels, namely: 50 kg ha-1, 100 kg ha-1, 150 kg ha-1, and 200 kg ha-1. The results showed that the growth of soybean (plant height and number of leaves) showed no differences due to different ways of placement urea but soybean yield components and the yield showed differences due to different ways of placement of urea. Yield components (pod number, pod dry weight, and number of seeds) and yield (seed dry weight) of soybean is higher when the ways of placement of urea along the bolt is placed in between rows of plants compared with plants placed on the side. Differences urea dose given either 50 kg ha-1, 100 kg ha-1, 150 kg ha-1, and 200 kg ha-1 showed no difference on the growth and yield of soybean plants.Key words: doses, fertilizers placement, soybean, ure
KEMELIMPAHAN COCCINELLIDAE PADA PERTANAMAN JAGUNG YANG DIBERI KOMPOS GULMA SIAM (Chromolaena odorata)
Get PDFThe objective of This research was to know indirect effect of siam weed compost to the population abundances of natural enemy Coccinellidae troughout corn plant performance. This research held on Banguntapan, Bantul, Yogyakarta from October 2009 until Marc 2010. It used Complete Randomized Design with 4 treatmens and 6 replications. The fertilizer treatmen consist of siam weed compost, cow menure compost, NPK, and control without fertilizer. Observation of Coccinellidae populatin had been done each 2 week. Result showed that the kind of fertilizer gived significantly effect of Coccinellidae population abundance. The highes Coccinellidae population given by siam weed compost treatmen (15), followed by cow menure compost (9), control (5) and the lowes one was NPK fertilizer (4)