煙草赤星病과 施肥量과의 關係에 關한 硏究 = The Effect of N., P. and K. on the Infection of Tobacco Brown Spot Disease

다국어 초록 (Multilingual Abstract)

This experiment was carried out in order to observe the effects three elements of fertilizer(N.,P.,K.,) on the infection of tobacco brown spot disease.
The plots were designed by split plot method with 8 treatment (A: check, B: 50% added applied N., P. and K., C: 50% subatracted applied three elements., D: 50% added applied N., E: 50% added applied P., F: 50% added applied P., G: no applied P., G: an applied P: and H: no applied P.). Check is N 14kg P2O5 21kg and K3O 28kg per 10 are respectively. Y.S.A was employed for sample variety and transplanted on 15 May.
The results obtained as follow;
1) There were no differences among the plots (treatments) during the early growing stages.
2) The plot of 1½N, no K. and 1½N.P.K. have shown larger number of lesions than the check respectively.
3) The plot of 1/2 N.P.K.(C), 1½K(F), and no P.(G) have shown almost no differences in the rate of disease occurence as compared with check (A).
In conclusion, excess application of N. and defficiency of K. seemed to be related with tobacco brown spot disease infection.

목차 (Table of Contents)

• Ⅰ.緖言
• Ⅱ.材料 및 方法
• Ⅲ.試驗成績
• Ⅳ.考察
• Ⅴ.摘要