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RISS 인기검색어
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- 저자 : 노승표(S . P . Rho) (검색결과 3 건)
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벼멸구 피해해석에 관한 연구 I. 벼멸구 가해시기 및 고사시기가 수도수량에 미치는 영향
김재덕,김호중,노승표,배성호,Kim J.D.,Kim H.J.,Rho S.P.,Bae S.H. 한국응용곤충학회 1984 한국식물보호학회지 Vol.23 No.3
The present work was designed to study the yield loss on rice at different appearance days of hopperburn caused by the brown planthopper(BPH), Nilaparvata lugens Stal, when rice plants were infested with BPH on booting and heading stages. Dead plants were colleted from 23 days after heading stage with intervals of 5 days. Yield losses by the initation of BPH infestation was greater at tooting than at heading stage. Compared to the uninfested plot, there was a reduction in 1,000 grain weight and filled grain percentage at both stages. Positive relationship was observed between rice yield(Y) and the number of days from heading to the appearance of the hopper-burn. Regression equations calculated were; for BPH feeding from booting $\hat{Y}(g)=10.145X-16.374(r=0.9726^{**})$, and for BPH feeding from heading $\hat{Y}(g)=9.792X+26.936(r=0.8850^{**})$. 포장조건하에서 수잉기와 출수기에 벼멸구를 인위적으로 가해시킨 후 출수후 고사시기별로 수량수율을 조사하여 다음과 같은 결과를 얻었다. 1. 출수후 23일경에 고사된 벼는 무접종구에 비하여 등숙율은 $32.2\~37.5\%$ 현미천립중은$ 3.2\~3.5g$ 감소되었다. 2. 고사시기가 같아도 수잉기부터 가해구는 출수기부터 가해구보다 등숙율 현미천립중, 현미수량이 낮았다. 3. 고사된 벼의 감수율은 무접종에 비하여 고사시기에 따라 $24\~62\%$였으며 출수후 고사일수(X)와 수량(Y)간에는 다음과 같은 관계가 있었다. o 수잉기이후가해 : $\hat{Y}=10.145X-16.374(r=0.9726^{**})$ o 출수기이후가해 : $\hat{Y}=9.792X+26.936(r=0.8850^{**})$.
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사초용유채 ( Brassica napus Subsp . oleifera ) 의 생산성과 사료가치에 관한 연구 1 . 남부지역에 적응한 사초용유채의 품종선발
안계수(G . S . Ahn),권병선(B . S . Kwon),노승표(S . P . Rho),오두일랑(I . Goto) 한국축산학회 1989 한국축산학회지 Vol.31 No.3
In order to obtain basic information for breeding varieties of forage rape which is suitable at the southern part of Korea, seventeen introduced varieties were grown from Sep. 1986 to May 1987 at Mokpo Branch Station, Crop Experiment Station, and yield components and nutrient quality of plants were observed. The results obtained are summarized as follows: l. Forage rape cv. Velox showed higher dry matter yield than any other variety used in the experiment. It showed relatively high content of crude protein and in vitro dry matter digestibility(IVDMD) and low content of NDF, ADF, cellulose and lignin. Therefore, it was concluded that Velox was the most suitable variety with high yield and high nutrient quality at the southern part of Korea. 2. The heritabilities of all the observed characters but hemicellulose were estimated to be large. 3. Total dry matter yield showed highly significant positive correlations with plant length, stem diameter, number of main stem leaves, fresh yield, stem dry matter yield, leaf dry matter yield, in vitro dry matter digestibility(IVDMD) and digestible dry matter yield(DDMY). These characters mentioned above showed negative correlations with content of NDF, ADF, cellulose and lignin. 4. According to the result of path coefficient analysis, characters highly correlated with total dry matter yield showed large direct effects on total dry matter yield.
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