What about the lack of spinach? Water spinach deficiency and pest control method

Deficiency is one of the main physiological diseases of water spinach. The deficiency of water spinach will undoubtedly have an adverse effect on the cultivation of water spinach. So, what should farmers do in the face of the deficiency of spinach and the common pest infestation? The following is a small series of Huinong. I will talk about the prevention and control of water-dried vegetables and pest control methods.

Water spinach deficiency:

Hazard characteristics

Symptoms of the leaves are yellow, slow growth, small leaves, not easy to turn green, but the veins are still green, the leaves of the old leaves are easy to curl, the stems are small, the roots are underdeveloped, and begin to weaken.

Incidence condition

Fertilization is single, unable to meet growth needs, continuous rain or drought.

Control method

Pay attention to fertilization habits, supplement trace elements and organic matter; when physiological diseases occur, you can use seaweed + micro-fertilizer to spray.

Water spinach pests:

Hazard characteristics

Insects have adults, eggs, larvae, and pupa. The larvae feed leaves, flower buds, flowers and fruits can be inserted into the leaves and heart leaves on cabbage and cabbage, and excretion of feces, causing pollution and decay.

Control method

(1) Clear the weeds in the field in time, and take measures such as autumn and winter ploughing to eliminate wintering crickets.

(2) Pay attention to timely removal of egg fragments and damaged leaves in the field.

(3) trapping adult insects: the proportion of sugar, vinegar, wine, and water in the adult period is 3:4:1:2, and a small amount is suitable for trapping adult insects.

(4) It is advisable to carry out chemical control when larvae of 1st to 2nd instars are inhabited.

A, 5% inhibition Taibao emulsifiable concentrate 4000 times solution;

B, or 5% agricultural dream emulsifiable concentrate 4000 times liquid;

C, or 20% Diflubenzuron No. 1 suspension agent 500 ~ 1000 times solution;

D, or 25% Diflubenzuron No. 3 suspension agent 500 ~ 1000 times solution;

E, or 40% chrysanthemum emulsifiable concentrate 2000 ~ 3000 times liquid;

F, or 40% chrysanthemum EC 2000-3000 times liquid;

G, or 20% fenvalerate 2000 ~ 4000 times liquid;

H, or artemisinin insecticide 500 times solution.

The above is the deficiency of the physiological diseases of the hollow vegetables and the prevention and control methods of the pests compiled by Huinong. I hope to help you. The above-mentioned medicaments are for your reference only.

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