Liu, a user of gold straw hat in Dezhou, Shandong, asked on October 11th: The tomatoes in the greenhouse showed a large area of ​​dead trees during the expansion period, and the leaves turned yellow. What kind of disease is it?
Golden straw hat agricultural expert Liu Chongxiao A: According to the symptoms described should be tomato root rot, but many farmers mistaken for bacterial wilt treatment, missed the best period of treatment, causing serious losses. The disease should be prevented in advance. On the second day after planting water, use 23% copper rosinate + refined azoxystrobin to soak the roots, and then use the above medicaments for leaching for three spikes, which has a better effect on preventing the disease. .
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