| 세균성벼알마름병 발생에서 미치는 벼 출수기의 미기상 요인 |
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이용환, 고숙주, 차광홍, 최형국, 이두구, 노태환, 이승돈, 한광섭 |
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| Micro-Weather Factors during Rice Heading Period Influencing the Development of Rice Bacterial Grain Rot |
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Yong Hwan Lee, Sug Ju Ko, Kwang Hong Cha, Hyeong Gug Choi, Doo Goo Lee, Tae Hwan Noh, Seung Don Lee, Kwang Seop Han |
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| Abstract |
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To make the forecasting model of rice bacterial grain rot (RGBR) using the statistical procedures with SAS (Statistical Analysis System) based on micro-weather factors during heading period of rice, 21 rice varieties having the different heading time (40% panicles headed) were planted at 30 May and 15 June in Naju. Heading time and diseased panicles were investigated from July to August in 1998. RGBR mainly occurred on varieties headed from 29 July to 19 August, but not on varieties headed after 22 August. RGBR was highly correlated with diurnal temperature during 7 days (r = ?0.871**) and 10 days (r = ?0.867**) and minimum relative humidity during 15 days from 3 days before heading time. After examining the models with several ways (R2, Adjusted R2, MSE), one equations were selected: Y = 92.83 ? 2.43Tavr + 1.88Tmin ? 1.04RHavr + 0.37RHmin + 0.43RD ? 3.68WS (R2=0.824) using six variables of average and minimum temperature (Tavrand Tmin), average and minimum relative humidity (RHavr and RHmin), rainy days (RD), and wind speed(WS) during 7 days from 3 days before to 3 days after heading time. |
| Key Words:
Burkholderia glumae, forecasting, micro-weather factor, rice bacterial grain rot |
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