Effects of Several Chemicals and Burial of Seeds into the Soil on Dormancy-breaking of Weed Species
1998
Shim S.I. | Lee S.G. Dept. of Agronomy, Korea Univ. Seoul 136-701 (Korea Republic)
The seed dormancy is one of the peculiar characteristics of a number of weed species and it makes difficulties in weed control. To clarify the mechanism of seed dormancy, several chemicals such as KNO3, KOH, thiourea, and H2O2 and phytohormone(GA3) were treated to dormant seeds. Among the species treated with several chemicals, the germination percentages of Setaria glauca, Ambrosia trifida and Ranunculus sceleratus were increased with KNO3 and those of S. glauca, R. sceleratus were increased with thiourea. Hydrogen peroxide promoted the germination of Setaria viridis and S. glauca. Germination percentages of S. viridis, S. glauca and Cyperus sanguinolentus were increased with enzyme treatment using pectinase.
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