Influence of Foliar Application of Mixed Solution of Urea-Chemicals on Rice Plant Growth

비료농약(肥料農藥) 혼용살포(混用撒布)가 수도생육(水稻生育)에 미치는 영향(影響)

This experiment was conducted to find out the feasibility of foliar application of mixed solution of urea and agricultural chemicals. One to two percent urea solution and chemicals were combined for joint application and the degradation of mixed solution was tested and its phytotoxicity was evaluated on rice plant. There were no changes of pH and components of mixed solution of urea and chemicals. However, it led to phytotoxicity in rice plant and more severe in higher urea content. The yields of rice were slightly lower in the mixed solution plot than in check one, however, no significant statistical difference was observed. Due to phytotoxicity, the foliar application of mixed solution is not agronomically sound.

요소(尿素)와 농약(農藥)을 혼용(混用)했을 때 주성분변화(主成分變化), 수도(水稻)에 대한 약해(藥害) 및 수량(收量)을 조사(調査)한 결과(結果)는 다음과 같다. 1. 요소(尿素)와 농약혼용시(農藥混用時) 주성분(主成分) 및 pH 변화(變化)는 없었다. 2. 요소(尿素)와 농약혼용시(農藥混用時) 전(全) 약제(藥劑)에서 약해(藥害)가 발생(發生)하였으며 요소(尿素) 농도(濃度)가 높은쪽(2%)에서 피해(被害)가 심(甚)하였다. 3. 요소(尿素)와 농약(農藥)을 혼합살포(混合撒布)하면 수량(收量)은 다소(多少) 떨어지나 통계적(統計的)인 유의성(有意性)은 없었다. 4. 요소(尿素)와 농약혼용시(農藥混用時) 주성분(主成分)의 손실(損失)은 없었으나 엽면(葉面)에 약해(藥害)가 발생(發生)하므로 혼용살포(混用撒布)는 피하는 것이 좋을 것으로 사료되었다.