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EFEKTIVITAS LIMBAH CAIR PERTANIAN SEBAGAI MEDIA PERBANYAKAN DAN FORMULASI Bacillus subtilis SEBAGAI AGENS HAYATI PATOGEN TANAMAN Khaeruni, Andi; Asrianti, Asrianti; Rahman, Abdul
Jurnal Agroteknos Vol 3, No 3 (2013)
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This study aimed to find the best medium for formulation and storage of B. subtilis. The study consisted of two phases: (1) Selection of agricultural wastes as a propagation medium for Bacillus subtilis, (2) test for the stability of Bacillus subtilis in material formulation and its inhibition activity against Rhizoctonia solani. The second phase was conducted based on completely randomized design, consisting of five treatments, namely: 100 % medium synthetic, 100% coconut water, 75% coconut water + 25 % synthetic medium, 50% coconut water + 50% synthetic medium and 25% coconut water + 75% synthetic medium. Each treatment was repeated three times, so that there were 15 experimental units. B. subtilis ST21e isolate was formulated in liquid medium according to treatment and kept in plastic container at room temperature for 8 weeks to count the number of colonies and inhibition activity every 2 weeks. The results showed that the agricultural wastes (coconut water, tofu water and molasses) can be used as a media for B. subtilis ST21e propogation in different cell growth pattern. B. subtilis propogation in medium coconut water + 10% TSB had the best growth pattern compared to the other media. On the other hand, medium containing 25% coconut water + 75% synthetic medium was the best combination for storage medium of B. subtilis ST21e. Key words: biological agents, Bacillus subtilis, agricultural waste

KARAKTERISASI MORFOLOGI KETAHANAN KEKERINGAN PLASMA NUTFAH PADI GOGO LOKAL ASAL SULAWESI TENGGARA Sadimantara, Gusti Ray; Muhidin, Muhidin
Jurnal Agroteknos Vol 2, No 1 (2012)
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Efforts to increase rice production to achieve sustainable production faced a serious challenge. Rice demand is increasing due to population growth, changing consumption patterns of non-rice to rice, and the improvement of the local economy. On the other hand the national rice production is more limited. One alternative way to secure national rice production is through development of sub-optimal land, in the form of dry land, for upland rice cultivation. Potency of dry land for upland rice is big enough though constrained by such factors of soil fertility, rainfall and the presence of blast attacks. Test for drought stress was conducted using the Standard Evaluation System (SES) for Rice developed by the International Rice Researh Institute (IRRI). The results of the study on 24 local upland rice cultivars, based on the degrees of curl leaf and shoot dry index, it was known that there were two varieties that are very resistant to drought stress, i.e. cultivar Sala Bali and cultivar Wangkariri, and as many as six cultivars i.e. Paebiu Kolopua, Paebiu Tamalaki, Wangko'ito, and Wa Mengkale that were resistant to drought. Keyword: drought resistant, germplasm, upland rice

EVALUASI KETAHANAN KULTIVAR SORGUM TERHADAP PENYAKIT LAYU FUSARIUM Asniah, Asniah; Gusnawaty, HS; Taufik, Muhammad
Jurnal Agroteknos Vol 3, No 2 (2013)
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This study aimed to evaluate the resistance of sorghum cultivars to wilt fusarium. This research was arranged in a randomized block design, with six treatments [brown sorghum, white sorghum and red sorghum with no inoculation fusarium, brown sorghum, white sorghum and red sorghum with inoculation fusarium] with 3 (three) replications. Data observed were plant height, leaf number, leaf area, and heaviest of grain weight for vegetative observation, while for disease character was disease incidence. The results showed that none of sorghum cultivars evaluated showed resistance to wilt fusarium infection. The tolerant response to wilt fusarium was observed on brown sorghum, whereas red and white sorghum were susceptible to wilt fusarium. The heaviest of grain weight was found in brown sorghum (27.86 g/penicle). The wilt fusarium caused disease incidences ranging from 33.33% (brown sorghum) to 50% (red sorghum). Keywords: cultivars, disease incidence, fusarium, sorghum, resistance

PENGARUH KEMASAMAN DAN KONSENTRASI ALUMINIUM TERHADAP PERTUMBUHAN BEBERAPA VARIETAS TANAMAN JAGUNG (Zea mays L) Boer, Dirvamena; Muhidin, Muhidin; Safuan, La Ode
Jurnal Agroteknos Vol 1, No 3 (2011)
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This research was conducted in a factorial pattern of split plot design, with three factors. The first factor (as main plot) was acidity (pH), with two treatment levels: pH 4.5 (P1) and pH 6.5 (P2); the second factor (as sub plot) was aluminium concentration, with four treatment levels: 0 ppm Al (A1), 50 ppm Al (A2), 100 ppm Al (A3), and 150 ppm Al (A4); and the third factor (as sub-sub plot) was variety, with eight treatment levels: SU-025 (V1), ST-028 (V2), ST-050 (V3), ST-070 (V4), ST-079 (V5), SE-081 (V6), SE-090 (V7), and SU-094 (V8). Each treatment was repeated twice, resulting in 128 experimental units. The objectives of the research were: (1) to study the effect of acidity, aluminium concentration and their interactions on the growth of several maize varieties, (2) to obtain maize varieties which were tolerant to acidity and high aluminium concentration. Research results showed that acidity influenced leaf area and size. Aluminium influenced stem diameter, leaf area, total leaf weight, plant height, and dry weight of top plant parts (stem and leaves). Variety influenced all growth characters, except leaf size. Interaction between acidity and aluminium concentration influenced seminal root length. Interaction between acidity, aluminium and variety influenced lateral root length, whereas interaction between acidity and variety had no influenced on all plant growth characters. Concentration of 50 ppm Al gave a better effect compared to the concentration of 150 ppm Al. The growth of maize variety ST-028 (V2) and SU-025 (V1) gave a better yield, compared to other varieties. Keywords: acidity, aluminium, maize, in vitro

APLIKASI RIZOBAKTERI PADA COVER CROP DALAM MEMPENGARUHI SIFAT KIMIA TANAH BEKAS TAMBANG NIKEL Leomo, Sitti; Mudi, La; Alam, Syamsu
Jurnal Agroteknos Vol 3, No 1 (2013)
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The research aimed to know the efectifity of cover crop applied with rhizobacteria to influence chemical characteristic of soil of ex-nickel mine. This research was conducted since May to August 2012 at experimental farm and Agrotechnology Laboratory of Faculty of Agriculture of Haluoleo University. Soil analysis was carried out been in Soil Research Institute Bogor. The experiment was designed in a randomized block design, in a factorial pattern. The first factor was application of rhizobacteria consisted of 2 levels : R0 (without application of rhizobacteria) and R1 (with application of rhizobacteria). The second factor was cover crop with 4 levels, namely : C1 (Centrosema pubescens Benth.), C2 (Calopogonium mucunoides), C3 (Crotalaria sp.) and C4 (Amaranthus spinosus L.), resulted in 8 treatment combination. Each treatment was repeated 3 times, resulted in 24 experimental units. The experimental data were analyzed using analysis of variance and then followed by Least Significant Differences Test. Soil analysis data were analyzed descriptively. The research results showed that the application of rhizobacteria at Crotalaria sp. (C3) gave a significant effect on crop height and number of leaf branch. Besides, application of cover crop and rhizobacteria at ex-nickel mine increased soil chemical characteristic C organic, N total, P2O5, HCl 25% and K-ddKey words : Rhizobacteria, cover crop, soil chemical, nickel mining

PENGARUH JENIS PUPUK DAUN DAN JENIS MULSA TERHADAP PERTUMBUHAN DAN PRODUKSI TANAMAN BAYAM MERAH (Amaranthus tricolor L.) VARIETAS BISI Nurmas, Andi; Fitriah, Sitti Putri
Jurnal Agroteknos Vol 1, No 2 (2011)
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ABSTRACTThe objective of this experiment was to study the effect of foliar fertilizer type and mulch type on the growth and production of red spinach (Amaranthus tricolor L.) bisi variety. The experiment was conducted from July to September 2010 in the Village District Padaleu Poasia Kendari. The research was based on randomized block design (RBD) in the factorial pattern consisting of two factors, with three replications. The first factor was the type of foliar fertilizer which consisted of 4 levels: without foliar fertilizer (K0), Gandasil-D (K1), Bayfolan (K2), Seprint (K3). The second factor was the type of mulch which consisted of 3 types, namely: no mulch (M0), plastic black silver mulch (M1), and reed leaves (M2). The results showed that in general the interaction between foliar fertilizer of Bayfolan and plastic mulch (MPHP) gave a significant effect on the growth and yield of red spinach (Amaranthus tricolor L.) bisi variety. Keywords : Red Spinach, Foliar Fertilization Mulch

POTENSI EKSTRAK DAUN SIRIH (Piper betle liin) SEBAGAI BIOFUNGISIDA PENYAKIT BUSUK BUAH STROBERI (Colletotrichum fragariae brooks) SECARA IN-VITRO Ariyanti, Eka Lestari; Jahuddin, Rahmat; Yunus, Muhammad
Jurnal Agroteknos Vol 2, No 3 (2012)
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One of important pathogens on strawberry is Colletotrichum fragariae causing fruit rot. The study aimed to investigate the potency of water betel leaf extract (Piper betle liin) as biofungicides for inhibiting growth of C. Fragariae under in-vitro test. The study was arranged in Completely Randomized Design that consisted of five treatments : 0%, 10%, 20%, 30%, and 40% concentration of water betel leaf extract. Betel leaf was extracted by grinded in mortal, added steril water and mixed with PDA medium. The study showed that the 40% concentration of water betel leaf axtraction was most effective to inhibit growth of C. Fragariae in-vitro on PDA medium. The inhibiting ability of coloni grown was 58,57%, while inhibiting of spore germination was 33,59%. Key word : Colletotrichum fragariae, strawberry, water betel leaf extract.

MEDIA ALTERNATIVE PERBANYAKAN IN-VITRO ANGGREK BULAN (Phalaenopsis amabilis) Kasutjianingati, Kasutjianingati; Irawan, Rudi
Jurnal Agroteknos Vol 3, No 3 (2013)
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The aim of this research was to study the effects of alternative medium composition on micropropagation of Phalaenopsis amabilis. The species is one of the most important “queen of flower“commodities in Indonesia and it can increase domestic incomes. Completely randomized design was used for the experiment. The experiment used a single factor, multiplication media, consisted of 6 different compositions, i.e. VW + BAP 2 ppm, VW+ coconut water 150 ml/L, VW + Ambon banana extract 50 gt/L, POY + BAP 2 ppm, POY+ coconut water 150 ml/L, POY + Ambon banana extract 50 gt/L . Parameters observed were the number of shoots, leaves and roots. The results showed that addition of coconut water, banana extract, and BAP on media VW (Vacin and Went) or POY (liquid organic fertilizer Yoga) were not significantly different. Shoot number obtained was as many as 2 shoots. Key words: coconut water , banana extract, liquid organic fertilizer, Phalaenopsis

KISARAN INANG WERENG PUCUK METE (Sanurus indecora) DI PEMBIBITAN Rahayu, M; Nurmas, Andi; Yunita, Yunita
Jurnal Agroteknos Vol 2, No 2 (2012)
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Cashew is one of export commodities that has high economic value compared to other commodities. Sanurus indecora is one of major pest in cashew, because the pest could decrease both quality and quantity of the products. This study aimed to determine the most preferred host of S. indecora. The study consisted of: (1) Treatment of food, Choice – method using 10 tail nymphs S. indecora and No-choice method using 30 individuals of S. indecora (2) The treatment was done by spawning no-choice method using a single pair of imago S. indecora and Choice-method using 10 pairs of S. indecora. The parameters observed were the number of S. indecora attack on any type of host plant and the number of eggs laid on each host plant species. The study found that the treatment of feed no-choice method, nymphs that attacked on mango plants was on average of 8.5 tail, cashew plant 6.5 and rambutan 2.5 tail. Treatment of feed, choice-method, an average selection of nymphs that attacked the mango plants was 20 tail, cashew plants 5 tail and rambutan plants 1.5 tail. Spawning, no-choice method, the average number of eggs laid was 35 on mango plants, cashew plants 16 eggs laid, while no egg laid. Spawning choice-method the average number of eggs laid was 86 on mango plants, 50.5 on cashew plant while on rambutan plants. The results showed that the most preferred host of S. indecora was mango plant. Keywords: cashew plant, host range, S. Indecora

KERAGAMAN MORFOLOGI UBI JALAR (Ipomoea batatas (L.) Lam.) ASAL KABUPATEN MUNA Warhamni, Warhamni; Boer, Dirvamena; Muzuni, Muzuni
Jurnal Agroteknos Vol 3, No 2 (2013)
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This research aimed to study the morphological diversity of sweet potatoes in Muna regency. The morphological observation was performed to analyze both quantitative and qualitative characteristics of sweet potatoes. The morphological data were then analysed. The qualitative characteristics were presented in binary data. The quantitative data were firstly standardized. Then, the genealogical relationship of qualitative characteristics was analyzed using the Match Matching of genetic distance, and the genealogical relationship of quantitative characteristics was analyzed using Euclidian genetic distance. The genealogical relationship was calculated through genetic distance, which informs the genetic differences between populations. The results of the analysis showed that sweet potatoes in Muna beared similarities, although their dissimilarity coefficient value was small. Keywords: Sweet potatoes, Morphological, Genealogical Relationship

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Journal Mail Official
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Kota kendari,

Sulawesi tenggara

INDONESIA