Watermelon planting: 5 common diseases and prevention methods detailed explanation!

Watermelon is a very popular bulk fruit, but it is very sensitive to the surrounding growth environment in the process of growing, and many diseases will be encountered in the process of growing. If you are not careful, it may harm the whole watermelon field. Here's an introduction to watermelon planting: five common diseases and control methods!

1. Watermelon blight

Watermelon blight usually occurs in the high temperature rainy season, watermelon drainage system is poor, planting too dense will cause, will harm the roots and stems of watermelon, serious will also affect the leaves and vines, in the root neck disease will appear dark green patches, patches will develop around the stem, so that the stem rot, and finally lead to the whole plant withered, leaf fruit and vine symptoms are similar.

Prevention and control methods: disease-resistant varieties can be selected before sowing, such as Qiongxue, etc., do not rotate with melons and fruits after harvest in the watermelon field, and it is found that diseased melons should be removed in time to prevent infection. when there is a melon disease, you can spray chemicals for prevention and cure, such as frost, urea, manganese, zinc, etc., once a week for about a month.

Watermelon leaf blight

Watermelon leaf blight is a common disease of watermelon, which has a high incidence in spring and autumn, mainly due to more overcast and rainy weather, leaf blight mainly harms leaves, followed by vines and fruits, mostly on young leaves, irregular brown patches are produced on young leaves, and continuous growth leads to leaf wilt, and fruits and vines rot when they are sick.

Control methods: there are disease-resistant varieties specially resistant to leaf blight on the market, such as Zhengza No. 7, etc., after harvest, attention should be paid to cleaning up the diseased melon and concentrated burning. Establish a good drainage system of watermelon land, pay attention to rain prevention in overcast and rainy weather, and spray with Sukeling wettable powder once a week for about a month before the disease spot is produced.

Watermelon Fusarium wilt

Fusarium wilt usually occurs at the time of fruit. the seedlings will stand up and wither, withering the whole leaves, and the roots of the vines rot and turn brown, mainly because the bacteria enter through the root wound and grow in the cells. secrete Pectinase and other substances to destroy cells, resulting in duct blockage unable to transport water and nutrients.

Control methods: the best way to prevent and cure Fusarium wilt is to graft watermelon onto crops that are not easy to produce Fusarium wilt, such as gourd, etc. Fusarium wilt-resistant varieties on the market are Xinong No. 8 and so on. If you want to prevent Fusarium wilt, you can rotate water-based crops in the watermelon field, because the Fusarium wilt pathogen survives in water for only more than 100 days, and finally choose soil with rich nutrients, do not use fertilizer with diseased residues.

4. Grey mold of watermelon

Botrytis cinerea is caused by the invasion of Botrytis cinerea, which is especially serious in the overcast and rainy season in the south. It mainly harms leaves, fruits and stems, resulting in gray irregular patches on the leaves, and finally leads to withering, gray patches on the fruit stem, which can not grow normally and produce abnormal fruits. Botrytis cinerea is the most serious disease of watermelon, which can lead to all deformities of watermelons in the whole field and cannot be sold.

Control methods: Wuyisin water agent and anti-mildew wettable powder can be used for spraying, once a week, spraying for about a month, crop rotation for at least 4 years, to use rich organic fertilizer.

5. Powdery mildew of watermelon

Powdery mildew mainly occurs seriously in southern autumn, mainly harms the leaves, generally has no effect on the fruit, and produces many small white particles on the leaves, which will rob the leaves of nutrition and make the leaves unable to grow normally. cause the leaves to turn black.

Prevention and control methods: the cause of powdery mildew is mainly related to temperature, humidity and density. Attention should be paid to the temperature and humidity of watermelon, reasonable arrangement of drainage system and planting density in watermelon field, drainage after rain, and organic fertilizer. Powdery mildew is mainly a prevention.

The above is the introduction of the five common diseases of watermelon introduced by Tuliu. special attention should be paid to Botrytis cinerea, which is difficult to control and control. if it is not treated in time, it will lead to no yield and no harvest. in fact, the diseases have a lot to do with temperature, humidity and density, as long as they are controlled reasonably, the probability of disease will be much less.