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頁籤選單縮合
題 名 | 大豆銹病藥劑防除試驗=Chemical Control of Soybean Rust |
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作 者 | 王卓三; | 書刊名 | 中華農學會報 |
卷 期 | 35 民50.09 |
頁 次 | 頁51-55 |
關鍵詞 | 大豆; 銹病; 藥劑防除試驗; |
語 文 | 中文(Chinese) |
英文摘要 | Some eighteen diseases of soybean have been found in this island among which soybean rust (Phakopsora sojae (P.HENN SAWADA) is the most popular and critical one. Two experiments of chemical control of this disease were carried out at Machia Sugarcane Improvement Station in 1959 and 1960 respectively. The tested variety was Jukoku. The first experiment was planted on July 10, 1959, and harvested on Sept. 29, 1959. Each of three fungicides including Dithane Z-78, Karathane WD and Phygon XL, was diluted to 0.2% concentration with two times of spray during the late period of soybean growth, 40 and 55 days after planting shows six different degrees of rust infection as appeared on every group of 200 leaves collected from each plot and the percentage of infection was thus calculated by using following formula: Percentage of infection =(0×n0+1×n1+2×n2…)/N(n0+n1+n2…)×100 the results of first experiment is seen in table 1. Another experiment was conducted from Feb. 19, 1960 through May 16, 1960. no different treatment had been made except that besides Dithane Z-78, other five fungicides: namely, Copper-Sandoz, Thiovit, Zineb-Sandoz, 0-3818-B and Bordeauz Mixture were used. Look over Table 2 for the findings of second experement. |
本系統中英文摘要資訊取自各篇刊載內容。