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| Field Control Effect and Yield Increasing Role of Different Types Fungicides on Carrot Black Rot |
| ZHAO Xiao-jun，ZHOU Jian-bo，FENG Yun-tao，YIN Hui，GUO Gui-ming |
| Institute of Plant Protection，Shanxi Academy of Agricultural Sciences，Taiyuan 030032，Shanxi，China |
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Abstract The grading standard for carrot black rot was established according to its occurance characteristics and symptom during carrot growing period．Further studies on the field controlling effect of 7 different fungicides to carrot black rot and the yield increasing role were carried out．The results showed that all these different fungicides had certain controlling effects to carrot black rot，and along with the improvement of controlling effect，the effect of yield increasing was remarkably increased．The best one among them was 40% chlorothalonil SC with 76.38% of controlling effect and the yield increasing rate was 84.21%．
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Received: 27 February 2012
Published: 30 March 2012
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