The causes and control methods of the latest cucumber rotten head

Cucumber is a common vegetable, which has the function of beauty and beauty, which is deeply loved by people, and rotten head is a common disease when cucumber is planted, which will seriously affect the yield of cucumber. So what is the cause of cucumber rotten head? How to prevent and cure it? Let's get to know it.

1. Vine blight

Vine blight is mainly harmful to stems and vines, but also to leaves and fruits. The disease is caused by oval or diamond-shaped oval or diamond-shaped spots in the diseased part, which will split longitudinally after drying. Most of the infected leaves begin to attack from the edge of the leaves, forming a yellowish-brown "V" shaped spot, which is covered with small black spots, which is easy to break after drying, and the fruit is infected in the young fruit stage, and the pulp softens and fills.

Control methods: vine blight can be sprayed, the commonly used drugs are Baikodi, Baitai, methyl topiramate and so on, these drugs can treat vine blight.

2. Scab

Scab is mainly harmful to the growth node of cucumber, and the disease occurs quickly, and the normal heart leaves wither within a few days. after the disease, the leaves appear star-shaped perforation, stem disease spots are cracked, there is often colloid flow out, and there is also a transparent gel on the melon strips, and then it becomes a scab. When the humidity is high, the disease spot will have a black mildew layer.

Prevention and treatment: this disease is a disease of low temperature and high temperature, so we should pay attention to heat preservation measures and humidity during cultivation, remove the diseased plants in time and take them out of the shed to burn. At the initial stage of the disease, carbendazim, methyl thiophanate and mancozeb can be sprayed for prevention and treatment, and do not miss the growth point when spraying.

3. Bacterial blight

The disease is easy to occur in the low temperature season, causing the rotten head of cucumber, which must be invaded from the edge of the new leaf after infection, causing leaf edge drying, leaf vein bending and wrinkling, and leaf curling.

Prevention and treatment methods: agricultural streptomycin and Kesha spray can be used for prevention and control, once every 5-7 days, 3-4 times in succession.

4. Calcium deficiency

Calcium deficiency can also cause rotten head of cucumber, when the cucumber is deficient in calcium, the heart leaf is easy to change, the apical growth is blocked, the leaf yellowing and curling, the parietal leaf becomes smaller, the dwarfing symptom appears, and the leaf vine turns brown and dies. In case of low temperature, low light, and then suddenly clear, high temperature, the leaves near the growth node will curl and die. In the shape of a parachute, the veins of the upper leaves yellowed, the leaves became smaller, and the roots withered.

Prevention and control methods: calcium fertilizer is an inert element. In order to improve the absorption rate of calcium fertilizer, it is necessary to improve the root system, appropriately increase soil moisture and promote the absorption of calcium fertilizer. Foliar fertilizer can be used in the middle and later stages of growth. increase sufficient calcium fertilizer for plant growth.

The above is the introduction of the causes and prevention methods of cucumber rotten head, hope to help you, want to know more related knowledge, please pay attention to us.