The main reason for the occurrence of citrus oil spot disease is that during the fruit ripening period, there is too much rain, and the wind or day and night temperature changes drastically, causing the rupture of some peel oil cells around the pedicle, or it may be after the rain or the morning dew. If you are eager to harvest, or if you damage the peel during harvesting, you will get sick. Citrus oil spot is a physiological disease. At present, there is no targeted drug plus prevention and control, but it can only be seriously prevented in production and harvesting. The main methods are:
1. Try to avoid picking fruit when it is raining and when the morning dew is not dry or after the strong wind. It should be taken 2 to 3 sunny days after the rain.
2. In the process of harvesting, selecting, packing, transporting and storing, try to be light, light and light, to avoid damage to the peel.
3. The harvest of the fruit before the frost, or the application of lime water to the outer fruits of the canopy 20 days before harvesting also has the effect of reducing the incidence. The correct use of 2.4-D preservative in the process of anti-corrosion preservation of fruit soaking can also reduce the occurrence of oil spot disease. 2.4-D should be fully dissolved in warm water or high-concentration shochu, then thoroughly mixed with Wanli and water. Fruit soaking can reduce the incidence of oil spot disease.
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