This study was conducted evaluate the control effect of fungicides on control of Leaf blight, growth characteristics, and dry yield in the cultivation of Job's tears. All fungicides treated had no effect on the growth of Job's tears. The major fungicides were mancozeb Wp, $75\%$, chloroth...
This study was conducted evaluate the control effect of fungicides on control of Leaf blight, growth characteristics, and dry yield in the cultivation of Job's tears. All fungicides treated had no effect on the growth of Job's tears. The major fungicides were mancozeb Wp, $75\%$, chlorothalonil Wp, $75\%$, dithianon Wp, $43\%$, difenoconazole Wp, $10\%$, benomyl Wp, $50\%$, and propineb Wp, $70\%$. Dry seed yield were increased largely with chlorothalonil Wp, $75\%\;(33g/20\ell)$, fungicide than the other fungicides and control. All fungicides had no injury with standard dosage. On the other hand all fungicides had slight injury in the double dosage level for the Job's tears.
This study was conducted evaluate the control effect of fungicides on control of Leaf blight, growth characteristics, and dry yield in the cultivation of Job's tears. All fungicides treated had no effect on the growth of Job's tears. The major fungicides were mancozeb Wp, $75\%$, chlorothalonil Wp, $75\%$, dithianon Wp, $43\%$, difenoconazole Wp, $10\%$, benomyl Wp, $50\%$, and propineb Wp, $70\%$. Dry seed yield were increased largely with chlorothalonil Wp, $75\%\;(33g/20\ell)$, fungicide than the other fungicides and control. All fungicides had no injury with standard dosage. On the other hand all fungicides had slight injury in the double dosage level for the Job's tears.
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문제 정의
As its lesion is severe, several lesion are mixed and it is decreased. Therefore this study reports the results of applying some fungicide for preventing Leaf blight, the severe disease of the Job's tears.
제안 방법
Experimental plot was arranged with split-plot design with three repetitions, experimental area per plot was 10 m2, direct seeding was done with 60×15cm on June 15, the amount of fertilizer applied (1kg/10a) was 1,000kg with the actual quantity of compost and N-P2O5-K2O=5-8-8 kg/10a was applied at the beginning. The other cultural management was carried out in accordance with the conventional culture method of the Yongjun district in South of Korea.
The fungicides on the growth of Job's tears are compared by a broad outlook (0-9) by three times after 3 days (July 14), 5 days(July 16) and 10 days (July 21) of mancozeb Wp [75%(40g/20ℓ)], chlorothalonil Wp [75%(33g/20ℓ)], dithianon Wp [43%(20mℓ/20ℓ)], difenoconazole Wp [10%(10g/20ℓ)], benomyl Wp [50%(13g/20ℓ)], propineb Wp [70%(40g/20ℓ)] of standard plots design and mancozeb Wp [75%(80g/20ℓ)], chlorothalonil Wp [75%(66g/20ℓ)], dithianon Wp [43%(40g/20ℓ)], difenoconazole Wp [10%(20g/20ℓ)], benomyl Wp [50%(26g/20ℓ)], propineb Wp [70%(80g/20ℓ)] of double plots design treatment. Experimental plot was arranged with split-plot design with three replications and experimental area and cultivation method per pot are the same as the above.
대상 데이터
This experiment was conducted at farmer's field located at Yongjun-ri, Haeryong-myon, Sunchon city, Chonnam, Korea where is the production area of the Job's tears cultivars, Kwangyang local and Hadong local and Gurye local were used in this study.
성능/효과
On the insect pest of aphid and Spodoptera exigua, plots treated with all fungicides and non treated plots at a broad outlook were slight as 1 and in the dry grain of yield per 10a, Kwangyang local was 140kg, Hadong local was 134kg and Gurye local was 151kg at nontreated plot, but plot treated with mancozeb Wp [75%(40g/20 ℓ)] were 218, 215, 233kg, which showed yield increase of 156, 154, 166% respectively, plot treated with chlorothalonil Wp [75%(33g/20ℓ)] were 232, 230, 242kg, which showed yield increase of 166, 164, 173% respectively, plot treated with dithianon Wp [43%(20mℓ/20ℓ)] were 207, 201, 215kg which showed yield increase of 148, 144, 154%, plot treated with difenoconazole Wp [10%(10g/20ℓ)] were 196, 185, 212kg, Which showed yield increase of 140, 132, 151%, plot treated with benomyl Wp [50%(13g/20ℓ)] were 190, 180, 210kg, which showed yield increase of 136, 129, 150% and plot treated with propineb Wp [70%(40g/20ℓ)] were 182, 175, 198kg, which showed yield increase of 130, 125, 141% and it is considered that all fungicide show yield increase, there is no reduction in yield and these are ideal fungicide.
There was no effect by rainwater after the treatment of disinfectants and according to the examination on July 21, 5 days after applying fungicide for three varieties such as 'Kwangyang local', 'Hadong local' and 'Gurye local' at 142 plants per plot, Kwangyang local was 13.3%, Hadong local 12.0%, and Gurye local 12.3% at non-treated plot show high rate of infected plant with 12.3%, but the plots treated with mancozeb Wp [75%(40g/20ℓ)]lows low rate of infected plant as 1.2% and control value was high as 90.7%. Plot treated with chlorothalonil Wp [75%(33g/20ℓ)]has low rate of infected plant as 1.
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