Ilyas, Satriyas
Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia

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Efektivitas Frekuensi dan Volume Penyemprotan Daun dengan Agens Hayati Filosfer dalam Meningkatkan Pertumbuhan Tanaman dan Hasil Padi Khodar, Samsi Abdul; Ilyas, Satriyas; Budiman, dan Candra
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 44, No 2 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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ABSTRACTIncreased of plant productivity in field determined by the use of quality seed from improved variety. The purpose of this research was to study the effect of frequency and volume of phyllosphere biological agents by foliar spray on rice plant infected by Xanthomonas oryzae pv. oryzae (Xoo) in improving plant growth, production of rice seed, and controlling bacterial leaf blight (BLB). This research was conducted at Seed Health Laboratory, Department of Agronomy and Horticulture, Bogor Agricultural University, and Muara Experimental Field, Rice Research Institute, March through September 2014. The experiment was conducted using a randomized complete block design with two factors, and replicates as blocks. The first factor was five levels of frequency of spraying with biological agents: P0 = control, P1 = Xoo seed inoculated then invigorated with biomatriconditioning, P2 = Xoo inoculated seed, then biomatriconditioned, and the plants were sprayed with phyllosphere biological agents F112 once, P3 = as P2, and the plants were sprayed with F112 twice, and P4 = as P2, and the plants were sprayed with F112 three times. The second factor was three levels of spray volume: i.e., 300, 400, and 500 L ha-1. Result of this experiment revealed that biomatriconditioning with rhizobacteria P. diminuta A6 and B. subtilis 5/B improved field emergence and seedling dry weight. Seeds applied with biomatriconditioning then followed by foliar spray with phyllosphere bacteria F112 at 40, 60, and 80 days after transplanting effectively reduced severity of BLB, increased plant dry weight and seed yield. All treatments increased yield as compared to untreated control. Volume of foliar application showed no significant difference, therefore, the lowest volume of 300 L ha-1 was recommended. Keywords: Bacillus subtilis 5/B, biomatriconditioning, Pseudomonas diminuta A6, Xanthomonas oryzae pv. oryzae
Pengaruh Formula Coating terhadap Viabilitas dan Vigor serta Daya Simpan Benih Padi (Oryza sativa L.) Palupi, Tantri; Ilyas, Satriyas; Machmud, Muhammad; Widajati, Eny
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 40, No 1 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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The objectives of this research were to find the most compatible coating formula for rice seeds (Experiment 1), and to evaluate the effect of coating formula on viability, vigor and storability of the seeds (Experiment 2). This research was conducted in Laboratory of Seed Science and Technology at IPB, Bogor and Laboratory of Seed Technology at PT East West Seed Indonesia, Purwakarta from December 2010 to February 2011. In Experiment 1, the ten coating materials (formula) were arranged in single factor of Completely Randomized Design with four replications, i.e. uncoated seed, 3% alginate + 1% talc, 3% alginate + 1% gypsum, 3% alginate + 1% peat, 3% arabic gum + 1% talc, 3% arabic gum + 1% gypsum, 3% arabic gum + 1% peat, 1.5% CMC + 1% talc, 1.5% CMC + 1% gypsum, and 1.5% CMC + 1% peat. Experiment 2 used Split Plot Design with four replications. The main plot was storage periods i.e. 0, 1 and 2 months. The seeds were stored in two storage conditions: ambient and air conditioned room. The subplot was coating formula (same as in Experiment 1). The results of Experiment 1 showed that the most compatible coating material for rice seeds were 1.5% CMC + 1% talc, and 1.5% CMC + 1% gypsum, these formula were able to maintain vigor of the coated seeds. In Experiment 2, coating formula of 1.5% CMC + 1% peat generated higher seed vigor than uncoated seeds after two months storage, 3% gum arabic + 1% gypsum was able to keep vigor for one month storage in ambient condition. The coating formula of 3% alginate + 1% peat was able to keep viability and vigor of the coated seeds for two months in air conditioned room. Keywords: seed coating material, seed quality, seed storage condition, seed storability
Invigorasi dan Pengurangan Pupuk N untuk Meningkatkan Pertumbuhan, Hasil, dan Mutu Benih Kacang Bambara Fitriesa, Sophia; Ilyas, Satriyas; Qadir, dan Abdul
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 44, No 2 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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ABSTRACTBambara groundnut can be cultivated in marginal land, however, its productivity is still low. In order to increase productivity, high quality seed must be used. The objective of the experiment was to evaluate the effects of seed invigoration using matriconditioning plus Rhizobium sp. and fungicide and reduction of N fertilizer on plant growth, yield, and quality of bambara groundnut seed. The experiment was conducted at Experimental Station in Cikarawang, green house in Cikabayan, and Seed Health Laboratory, Bogor Agricultural University from June 2013 until March 2014. This experiment was arranged in a split plot design according to completely randomized block design. The first factor was N fertilizer. Four levels of N fertilizer used were 0, 15.35, 30.7, 46.04, and 61.39 kg N ha-1. The second factor was seed invigoration. Seed invigoration consisted of without invigoration treatment (untreated), matriconditioning plus Rhizobium sp. and fungicide, matriconditioning plus Rhizobium sp., and matriconditioning plus fungicide. Result of the experiment indicated that matriconditoning plus Rhizobium sp. and fungicide improved plant growth (number of leaves, number of stem, nodule dry weight, root dry weight, and leaf dry weight), yield (weight of seed), and seed vigor (index of vigor). Matriconditioning plus Fungicide treatments significantly decreased the infection level of diseases on seed. Fertilizer application at the rate of 30.7 kg N ha-1 (half of optimum dose) was recommended because it showed the best result in pod fresh weight and dry weight, and seed weight.Keywords: benomyl, fertilization, fungicide, matriconditioning, Rhizobium sp.