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What diseases and insect pests do nocturnal primrose have and how to control them

Jane Margolis
2020-06-28 13:01:36
The main diseases of the evening primrose are Fusarium wilt, ring rot and coal pollution. The first kind of diseases need to be removed in time. The second kind can be sprayed with methylthiophanate. The main pests are mites and scale insects. The control of mites can be sprayed with anti mite 25% emulsifiable oil 800 times. The scale insects can be removed manually first, and then sprayed with Uranus and cypermethrin.

I. diseases

1. Fusarium oxysporum: Fusarium oxysporum is the main disease of noctux, which will cause the whole plant to wither, the water in it will dry out, and the whole plant will have problems in growth. In order to prevent this disease, in addition to the usual attention to maintenance, we also need to spray in time. We can spray 600-800 times of the fluid of Fusarium oxysporum and 600 times of 50% carbendazim. In addition, the diseased branches shall be removed in time, and the diseased branches shall be concentrated and burned to prevent infection to other healthy parts.

evening primrose

2. Ringworm disease and coal pollution disease: these two diseases will also affect plant growth, and can be sprayed with nail base Tuobu body fluid, which will have a good effect.

evening primrose

II. Pest

1. Mites: this kind of insect pest will harm the leaves, flowers and stems. It will stab into the stems and leaves of plants. At the beginning, there will be a large number of yellow brown dots on the front, and at the later stage, the leaves will gradually lose their green, and eventually cause a large number of leaves. It can spray anti mite 25% emulsion 800 times.

2. Scale insect: it is mainly harmful to leaves, fruits and branches, causing leaves to turn yellow, tree tips to wither, and tree growth to decline. Prevention and control measures shall be taken in advance and ventilation management shall be carried out in time. In case of insect damage, first consider manual removal, and then spray Uranus, Cypermethrin, etc.

evening primrose

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