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

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Karakterisasi Buah dan Penentuan Saat Masak Fisiologi Benih Beberapa Genotipe Cabai (Capsicum annuum L.) Suharsi, Tatiek Kartika; Syukur, Muhamad; Wijaya, Arief Riza
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 43, No 3 (2015): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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ABSTRACTIdentification of fruit and seed characters when they reach physiological maturity is very important to get high qualiy chili seed. The purpose of the research was to study the fruit characters and to determine seed physiologycal maturity of six chili genotipes (Capsicum annuum L.) i.e. Anies 1, Anies 2, Seloka 1, Seloka 2, Seloka 3 and SSP. Characterization was assayed at 32, 35, 38, 41, 44 DAA. Chili seed was taken from two groups of branches, lower branches (2nd-5th branches) and upper branches (6-7th branches). The result revealed that seed physiological maturity was achieved at 38-44 DAA, that was indicated by changes of the fruit color from brown to red (Anies 1) and dark green to red on five others genotipe; maximum seed dry weight, seed viability and vigor. When the seed reached physiological maturity, SSP’s had the longest fruit but fruit diameter and weight, seed number and seed weight per fruit was the lowest. However, SSP seed rendement was the highest. Flowers of lower branches developed faster, their fruits size, seed dry weight, and seed number was significantly higher than the upper branches. Nevertheles the seed viability and vigor was not different between lower and upper branches.Keywords: fruit color, seed dry weight, seed viability, seed vigor
Toleransi Galur Harapan Padi Sawah (Oryza sativa L.) pada Persaingan dengan Gulma Echinochloa crus-galli ,, Usman; Purwoko, Bambang Sapta; Syukur, Muhamad; Guntoro, dan Dwi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 44, No 2 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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ABSTRACTBarnyard grass (Echinochloa crus-galli (L.) P. Beauv.) is a major weed competitor to rice production in Indonesia. In order to develop integrated weed management program, a research to select competitive rice lines to E. crus-galli was conducted in a green house of Indonesian Centre of Agricultural Biotechnology and Genetic Resource Research and Development Bogor. The research design was split plot with four replications, E. crus-galli was designed as the main plot (rice without E. crus-galli compared  rice with four E. crus-galli per pot), and the sub-plots were 25 genotypes (23 lines, 1 tolerant variety and 1 sensitive variety). Level of tolerance was determined by the reduction percentage of grains weight, the number of productive tillers and dry matter weight. The results showed that rice competition with E. crus-galli reduced plant height, productive tiller numbers, filled spikelet numbers per panicle, dry matter weight and dry grain weight. Three lines, i.e., IR10L-155, IR10L-133 and BIO-R84-1 were classified as tolerant, 19 lines were moderate and 3 lines were sensitive to E. crus-galli competition.Keywords: Barnyard grass, competition, sensitive line, yield reduction
Aplikasi Bakteri Probiotik untuk Meningkatkan Mutu Fisiologi dan Kesehatan Bibit Cabai (Capsicum annuum L.) Tefa, Anna; Widajati, Eny; Syukur, Muhamad; Giyanto, dan
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 44, No 2 (2016): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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ABSTRACTThe use of probiotic bacteria as biocontrol agents is one of the methods of controlling anthracnose disease caused by Colletotrichum acutatum. The objective of this research was to suppress the infection of C. acutatum and increase chilli pepper seedling vigour. The research involved factorial experiments arranged in a completely randomized design with two factors. The first factor was seed coating involving six treatments, i.e., control, seed coating without bacteria, seed coating with Bacillus sp., Pseudomonas sp., Actinomycetes sp, and fungicide. The second factor was the seed storage period where six storage periods were experimented, i.e., 0, 1, 2, 3, 4, 5, and 6 months. The results showed that the coating treatment of Bacillus sp., Pseudomonas sp., and Actinomycetes sp. improved germination, growth rate and number of leaves and reduced the incidence of attacks and infection of hypocotyls at 5 month storage period.Keywords: Actinomycetes sp., Bacillus sp., Pseudomonas sp., seed coating, storage period