Effect of sulfuric acid and potassium nitrate on germination of creeping signal grass seed (Brachiaria humidicola (Rendle) schweick.)
1994
Watana Kodpat | Tanart Thunyarpar (Department of Livestock Development, Bangkok (Thailand). Div. of Animal Nutrition. Phetchaburi Animal Nutrition Research Center)
Effect of sulfuric acid on seed soaking for 2 to 10 minutes was studied on the viability of creeping signal grass. It was found that sulfuric acid at the concentration of 98 percent did not affect the seed viability as tested by Tetrazolium method. Soaking the seed in 98 percent H2SO4 for 10, 15 and 20 minutes before soaking the seed in KNO3 at 2, 6 and 10 percents for 4 hours and then washed the seed in water for 13 hours, showed that, 20 minutes soaking H2SO4 gave the percentage of germination higher than soaking for 10 and 15 minutes. Whereas 6 percent KNO3 gave the percentage of germination higher than 2 or 10 percent. Since the interaction of H2SO4 and KNO3 was found, the effect of KNO3 can be seen when the time of H2SO4 soaking was 20 minutes. Soaking the seeds in H2SO4 for 20 minutes in addition to KNO3 either 6 or 2 percent gave the highest percentage of germination, which were 20 time higher than the untreated control.
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This bibliographic record has been provided by Thai National AGRIS Centre, Kasetsart University
