• KOREAN JOURNAL OF CROP SCIENCE
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• v.42 no.4
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• pp.378-383
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• 1997

Bird damages are often occurred at the seeding and seedling stages of crops. What the bird damage is preventing from the seeding and seedling of rice in the paddy would be very important to get high yield. Methiocarb was formulated as a bird repellent of crop seeding and seedling. Its effects on the seedling growth, related to the chemical injuries and the bird damages, were examined at the seeding and seedling growth stages of Anjungbyeo(Oryza sativa L.) with different types and amounts of methiocarb treatment in both pot and field experiments. In the pot experiment, bird damages were not occurred at all treatments of methiocarb, while bird damages were occurred at the control; 30, 85, and 100％ of damages at 5, 10, and 15 days after seeding, respectively. The ratio of seedling stand was not significantly different among all of treatments, methiocarb, methiocarb＋thiram, and control. However, the plant height and the number of seedling leaves at 15 days after seeding was shortened and lowered statistically more at treatment of methiocarb 15g than those of methiocarb 10g and control. The plant height at 35 days after seeding, showing the recovery degrees of chemical injuries, was significantly lowered in treatment of methiocarb＋thiram 15g, whereas the plant height of methiocarb FS 15g was not significantly differed from that of the control. In the field study, the bird damages were significantly reduced in treatment of methiocarb compared to that of the control. The plant height and the number of leaves at 25 days after seeding were not differed statistically among all of treatments. The chemical injuries were occurred in all treatments of methiocarb at 10 days after seeding, while they were not shown at 20 days after seeding.