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ISOLASI, KARAKTERISASI DAN UJI ANTAGONIS BAKTERI SELULOLITIK TERHADAP Phytophthora capsici ASAL TANAMAN LADA (Piper nigrum L.) SECARA IN-VITRO Khaeruni, Andi; Satrah, Vit Nehru; Mariadi, Mariadi
Jurnal Agroteknos Vol 1, No 3 (2011)
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ABSTRACT The Aim of this experiment was obtain cellulolitic bacteria that has antagonistic potential toward P. capsici of pepper isolated under in-vitro test. The experiment was begun in isolation and selection of cellulolitic bacteria from soil samples were taken from some location at Southeast Sulawesi. Selected 20 isolates of cellulolitic bacteria examined for its morphological and physiological characteristics as well as antagonistic potential toward P. capsici of pepper isolated under in-vitro test on Potato Dextrose Agar (PDA) medium. The potential antagonistic test was carry out used randomized complete design with three replications to observes the ability of cellulolitic bacteria inhibited mycelium growth of P. capsici on PDA medium. Results showed the selected isolates very divers on morphological characters in size, pigmentation, shape, and elevation of surface. Physiological character showed that out of 20 isolates, 12 isolates have negative Gram reaction and 8 isolates positive Gram reaction. Obtaining 5 isolates very strongly, 11 isolates strongly and 4 isolates weak activities on secreted extracellular cellulose enzyme, all of isolates were facultative anaerobe activity. Further test on antagonistic ability showed that STS15c and STS12c2 isolates are the best isolates to inhibited mycelium growth of P. capsici on PDA medium in potential inhibited were 53.16% and 52.02% respectively. Key words: Cellulolitic bacteria, Phytophthora capsici, antagonistic

VARIABILITAS GENETIK DAN HERITABILITAS KARAKTER AGRONOMIS GALUR JAGUNG DENGAN TESTER MR 14 Nur, Amin; Iriany, Nenny R; Takdir M, A
Jurnal Agroteknos Vol 3, No 1 (2013)
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The objective of research was to estimate the genetic variability and heritability of inbred line maize agronomic characters as the initiation step of assessment for assembling of new cultivars. In dry season 2006, 90 inbred lines of maize from ICERI were evaluated at Village of ILETRI KP. Muneng, District of Probolinggo, Province of East Java. The design was simple latice design with two replications. Results showed that plant growth, days of flowering and silking, plant harvested, ear harvested, ear weight, moisture content, yield, ear range and 100 seeds weight had wide genetic variability, while plant height, ear height, days to hervest and ear diameter had narrow genetic variability. Heritability broad sense, for characters plant growth, days of flowering and silking, plant harvested, ear harvested, ear weight, moisture content, yield, ear range, plant height, ear height, days to harvest and 100 seeds weight was classified medium; while for characters of ear diameter was classified low. Therefore, efforts to increase inbred line of maize yield are still promising through improvement of such characters. Keywords: genetik variability, heritability, inbred line

OPTIMASI PEMANFAATAN IRIGASI SUMUR POMPA (STUDI KASUS PADA SUMUR POMPA DI DESA WATULAWU KECAMATAN PONDIDAHA) Erawan, Dedi
Jurnal Agroteknos Vol 1, No 2 (2011)
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ABSTRACTThe operation of groundwater irrigation requires additional cost for fuel and pump operators. This, therefore, require careful cost calculation in order to obtain expected income. For this purpose, the research was conducted to optimize the usage of irrigation water from one of wells at Watulawu, Pondidaha, to determine the most profitable crop species and cropping system. The optimization was conducted using a linier program with QSB (Quantitative System Business) software, with the objective function was the maximum profit of farming and the limiting function was the availability of irrigation water and planting size. Out of optimized crop species (rice, maize, groundnut, and soybean), groundnut and rice were the profitable crops. Planting size for both species was varied during each planting season, depending on crop water requirement and rainfall. Early cropping on March required less irrigation water than early cropping on February Keywords : Groundwater irrigation, QBS Software

IDENTIFIKASI FAUNA TANAH EPIGEON DAN HEMIEDAFON PADA SISTEM TUMPANGSARI TANAMAN JAGUNG (Zea mays L.) DAN KACANG TANAH (Arachis hypogaea L.) PADA PERLAKUAN MIKORIZA INDIGEN DAN PUPUK ORGANIK CAIR Pakki, Terry; Halim, Halim; Arbiyanti, Arbiyanti
Jurnal Agroteknos Vol 2, No 3 (2012)
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This study aimed to determine the effect of indigenous mycorrhiza and liquid organic fertilizer on corn and peanut intercropping system and its effect on the epigeon and hemiedafon fauna population. This study was conducted by using three methods of sampling: pitfall trap, transect and funnel barlles. The result of this study showed that there were several types of epigeon and hemiedafon soil fauna to the corn and peanut intercropping system that treated by indigenous mycorhiza and liquid organic fertilizer : they were Cockroachest east (Blatta orientalis L.), Millipedes (Trigoniulus corallinus), Leech (Tyrnnobdella rex), Black fire ants (Selenopsis richteri), Fire ants (Selenopsis geminata), Black ants (Dolichoderus bituberculatus), Centipede (Scolopendra sp.), Small red ants, Crickets ground (Allonemobius fasiatus), Field crickets (Gryllus pennsylvanicus), Ground spider (Lycosa sp.), German roaches (Blattella fasciatus), Termites (Coptotermes sp.), Snails (Achatina fulica) and Earthworm genus Lumbricus. The highest level of epigeon and hemiedafon soil fauna population was found at 4 MST; they were Black ants (Dolichoderus bituberculatus) and Termites (Coptotermes sp.) in one colony. The lowest level of epigeon and hemiedafon soil fauna population was found in untreated area (controlled). Key words : soil fauna, epigeon, hemiedafon, intercropping system, indigen mycorrhiza, liquid organic fertilizer

PENGARUH STATUS HARA KALIUM TANAH TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN NENAS Safuan, La Ode; Poerwanto, Roedhy; Susila, Anas D; Sobir, Sobir
Jurnal Agroteknos Vol 1, No 1 (2011)
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The aims of the research were: 1. to investigate effect of potassium status on pineapple growth and production and N, P, K nutrient uptake , and 2. to determine the critical level of potassium for pineapple. The research was conducted using randomized blocked design with five soil K dosages: Ksr = 0 kg K2O ha-1, Kr = 70 kg K2O ha-1, Km = 140 kg K2O ha-1, Kt = 210 kg K2O ha-1 and Kst = 280 kg K2O ha-1. The plant growth, N, P, K nutrient up take and pineapple production were affected by soil potassium status and dosage of potassium application. The critical level of potassium for pineapple “D ” leaf was 1.71% of dry matter. Key words: Growth, production, nutrient status, potassium.

PERTUMBUHAN DAN PRODUKSI TANAMAN KEDELAI (Glycine max L.) YANG DIBERI PUPUK GUANO DAN MULSA ALANG-ALANG Sarawa, Sarawa; Nurmas, Andi; Dasril, Muh AJ
Jurnal Agroteknos Vol 2, No 2 (2012)
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The objective of this study was to study the growth and yield of Soybean (Glicine max L. Mer) treated by guano fertilizer and tall grass mulch, conducted from July to September 211 in Experimental Garden of Agriculture, Univesity of Haluoleo, Kendari. The study wass arrange on Randomized Completely Block Design in factorial pattern, consisting of two factors. The first factor was guano fertilizer (G), consisting of four level i.e. without guano fertilizer (G0), 4 t ha-1of guano fertilizer (G1), 8 t ha-1of guano fertilizer(G2), and 12 t ha-1guano fertilizer (G3). Second factor is was tall grass mulch(M) consisting of four level i.e. without mulch(M0), 5 t ha-1,(M1), 10 t ha-1,(M2), and 15 tha-1. (M3). Eachcombination was repeated tree times as block so there were 48 experimental units. Variabel observed were plant height, number of pods formed, number of seed planting, dry weight of 100 seed and yield in t ha-1. The results of the research indicate that the effects of interaction between guano ferlizer and tall grass mulch were significantly difference on plant height, number of pods formed, number of seed planting, dry weight of 100 seed adn yield in t ha-1. Keywords : soybeans, guano fertilizer, mulch

PENGARUH PEMBERIAN BERBAGAI DOSIS GLIOKOMPOS TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN CABAI MERAH (Capsicum annuum L.) Safuan, La Ode; Rakian, Tresjia C.; Kardiansa, Endi
Jurnal Agroteknos Vol 3, No 3 (2013)
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The aim of the research was to study the effect of several glyochompost's dosages on the growth and production of chilli. The research was carried out in Lamomea Village, District Konda, Konawe, Southeast Sulawesi, from December 2012 to February 2013. This research was arranged on completely randomized block design consisted of 4 treatments, i.e : without glyochompost (Go), glyochompost 30 g (G1), glyochompost 40 g (G2) and glyochompost 50 g (G3) per 20 kg soils. Analysis of variance (ANOVA) was used for statistical data analysis. Duncan's Multiple Range Test (DMRT) was applied to determine the significantly diferent among treatment with 95% convidence level. The results of the research showed that : (1) glyochompost effectively influenced the plant hight, total productive branch, total numbers and chilli’s weight, (2) Applications of glyochompost 50 gr per 20 kg soils have given the best influence on growth and production of chilli plants. Key words: chilli, growth, glyochompost, plants, production

PENGGUNAAN PUPUK KANDANG TERHADAP EFEKTIFITAS Trichoderma viride UNTUK MENGENDALIKAN PENYAKIT LAYU FUSARIUM PADA TANAMAN TOMAT Asniah, Asniah; Khaeruni, Andi; Anwar, Hasniar
Jurnal Agroteknos Vol 2, No 1 (2012)
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Fusarium oxysporum is one of the important pathogens that causes disease in many crops, especially horticulture crops, one of which causes Fusarium wilt disease in tomato plants . The purpose of this study was to evaluate the use of manure on the effectiveness of Trichoderma viride to control fusarium wilt disease on tomato plants. Manure used was cow and chicken manure, applied before and after planting. The research design was completely randomized design (CRD) with 9 (nine) treatment and 3 replicates. The treatments were without the application of manure and T. viride (A) , without manure but with T . viride before planting (B), without manure but with T. viride applied after planting (C), chicken manure without T. viride (D), chicken manure and T. viride application before planting (E), chicken manure and T. viride application after planting (F), cow manure without T. viride (G), cow manure and T. viride application before planting (H), cow manure and application of T. viride after planting (I). The results showed that chicken manure and T. viride application before planting were effective in reducing the incidence and severity of Fusarium wilt disease on tomato plants. The incidence and severity of disease was at 20 % and 26.67 % , respectively. Keyword: manure, tomato plants, Trichoderma viride

PEMETAAN POTENSI DEPOSIT ORGANIK DAN BATUAN SEBAGAI BAHAN BAKU PUPUK ALAM DI KABUPATEN KONAWE Tufaila, Muh.; Alam, Syamsu
Jurnal Agroteknos Vol 3, No 2 (2013)
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The research aimed to get nutrients or materials contained in each type of organic deposits and rocks; obtain the type, location and size distribution, and the reserves of organic deposits and rocks that can be used as raw materials for natural fertilizer in to Konawe, and get a map of potential raw materials for natural fertilizer in Konawe. The method used was a survey method followed by chemical analysis of organic deposits and rocks in the laboratory. Data were analysed descriptively. The research results showed that the organic deposits in Konawe were peat and guano deposits. Peat deposits can be used as a source of organic matter while guano deposits as P fertilizer. Peat deposits were located in Lambuya District as many as 2,160,972 tons, while guano deposits were located in Soropia District, Amonggedo, and North Wawonii with the number of deposit of 1,213.16 tons. Rock deposits in Konawe which can be used as raw material for natural fertilizer ultramafic rocks, mica schists and limestones. Ultramafic rocks can be used as Mg fertilizer, mica schist rocks as K fertilizers, and limestones as lime or Ca fertilizer. Deposit ultramafic rocks located in Districts Routa, Lambuya, Pondidaha, West Wawonii, East Wawonii, Middle Wawonii, Southeast Wawonii, North Wawonii, South Wawonii and Northeast Wawonii with the number of deposit of 326.05 million tons. Mica schist rock deposits with located in Districts Routa, Latoma, Asinua, Abuki, Tongauna, Uepai, and Onembute with the number of deposit of 164.16 million tons. Limestone deposit was located in the Districts Routa, Soropia, East Wawonii, Northeast Wawonii and North Wawonii, with the deposit amount 333.04 million tons. Keywords: mapping, natural fertilizer raw materials, organic deposits and rocks

KLASIFIKASI KESESUAIAN LAHAN KAKAO MENGGUNAKAN FAKTOR PEMBATAS MAKSIMUM DI KABUPATEN KOLAKA Syaf, Hasbullah; Arifin, Mahfud; Suriadikusumah, Abraham; Harryanto, Rachmat
Jurnal Agroteknos Vol 1, No 3 (2011)
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ABSTRACT The current implementation of land suitability classification of Cocoa is based on the national standard of growing plant. Therefore the implementation of the land use at the specific location was not acceptable. It is important to evaluate the land suitability of the cocoa growing areas. This study was conducted at Kolaka Regency Southeast Sulawesi Province. This research was performed using a survey method based on the observation unit. Which is consist of 93 observation units. The climate, soil and environment observations were following the Soil and Agroclimate Research Centre ( PPTA, 1993); Department of Agriculture (DEPTAN, 1993 dan 2003) and the Indonesian Coffee and Cocoa Research Centre (PPKKI, 2008). The analysis of land suitability is base on the threshold factor using the mínimum. The results showed that the land suitability of the cocoa growing areas according to PPTA dan DEPTAN (1993) were classification full into 76.34% marginal suitable (S3), 12.90% currently not suitable (N1) and 10,75% was permanently not suitable (N2). On the other had based on the DEPTAN (2003) the cocoa growing areas were 83.87% S3 and 16.13% not suitable (N). While according to the PPKKI (2008) the S3 was 63.44% and the N was 36.56%. Key word: land suitability classification and cocoa

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INDONESIA