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Article_ID  35(1)2010p42-47
Author  E.D.Purbajanti1, R.D.Soetrisno2, E.Hanudin3 and S.P.S.Budhi4
Institution  1Animal Science Study Program, Gadjah Mada University Yogyakarta - Indonesia. Permanent address: Forage Science Laboratory, Animal Agriculture Faculty, Diponegoro University, Tembalang Campus, Semar
Language  English
Abstract  The aim of this study was to know effects of saline condition to crop physiology, growth and forages yield. A factorial completed random design was used in this study. The first factor was type of grass, these were king grass (Pennisetum hybrid), napier grass (Pennisetum purpureum), panicum grass (Panicum maximum), setaria grass (Setaria sphacelata) and star grass (Cynodon plectostachyus). The second factor was salt solution (NaCl) with concentration 0, 100, 200 and 300 mM. Parameters of this experiment were the percentage of chlorophyll, rate of photosynthesis, number of tiller, biomass and dry matter yield. Data were analyzed by analysis of variance and followed by Duncan`s multiple range test when there were significant effects of the treatment. Panicum grass had the highest chlorophyll content (1.85 mg/g of leaf). Photosynthesis rate of setaria grass was the lowest. The increasing of NaCl concentration up to 300 mM NaCl reduced chlorophyll content, rate of photosynthesis, tiller number, biomass yield and dry matter yield. Responses of leaf area, biomass and dry matter yield to salinity were linear for king, napier, panicum and setaria grasses. In tar grass, the response of leaf area and biomass ware linear, but those of dry matter yield was quadratic. The response of tiller number to salinity was linear for all species.
Keyword  biomass, dry matter yield, grass, photosynthesis, saline.
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