抗生素藥劑對稻葉稻熱病之防治效果

Effect of Antibiotic Fungicides for Control of Rice Seedling Blast

蔄錦忠(C. C. Chien)

《中華農業研究》 15卷2期 (1966/06) Pp. 11-19

https://doi.org/10.29951/JARC.196606.0003

摘要

本試驗係欲明瞭，供試抗生素藥劑在本省環境下（亞熱帶）對稻熱病之防治效果及藥害之程度而舉行，其所得結果簡述如下：
1．本試驗行人工接種病原菌，使稻熱病發生並非自然發生者。
2．供試稻種爲臺中65號(Japonica type)及矮腳尖(Indica type)兩種。前者發病猖獗，後者之發病極輕微，故藥劑之藥效僅能根據臺中65號之防治效果論之。
3．據臺中65號之防治效果得知，處理間，撒佈藥劑與否，都呈極顯著，藥劑之間的差異，第一次試驗呈顯著，第二次試驗呈極顯著。
4．防治稻熱病之效果最優者爲Kasumin可濕性粉劑，其次爲Blaes乳劑。
5． Kasumin派可濕性粉劑供用濃度(250-1,000)之間均無藥害之發生，反之葉色呈濃綠色，對稻苗之生育良好。Blaes如使用高濃度（250倍）時易引起藥害，故實際使用時之濃度不可高於1,000倍之稀釋液。

並列摘要

The effectiveness of antibiotics for control of rice seedling blast was evaluated in the nursery. Artificial inoculations were made to induce the occurrence of the disease. Since Ai-Chiao-Chien, one of the two varieties tested were only slightly infected, the results reported herein are based on the data obtained with Taichung 65. Application of Kasumin W. P. resulted in the best control of seedling blast, while Blaes E. C. gave considerable reduction of the disease. No phytotoxicity was noticed on leaves sprayed with Kasumin W. P. at three different Concentrations tested. Leaves in Kasumin W. P. sprayed blocks showed greener in color as compared to those in check block. Blaes E. C., however, when applied at the rate of four grams per liter incited severe phytotoxicity on rice seedlings. It is, therefore, suggested that Blaes E. C. should not be applied at the concentration higher than one gram per liter.