What are the dangers of banana crestworm? How to prevent it?

Viral disease transmission has also been reported. Crested netbugs belong to the order Hemiptera, the family of networms. It is distributed in banana areas all over the country.

The insect occurs 6 to 7 generations per year in Guangzhou, with overlapping generations, and there is no obvious overwintering dormancy. Adults lay eggs in the mesophyll tissue on the back of the leaf, often concentrated in piles, each pile of 10 20 grains, with as many as 100 grains in between, and secreted purple gelatinous cover protection. After the insects hatch, they feed on the back of the leaves; Adults prefer to feed and lay eggs on the top of 1 3 young leaves on the top of banana plants.

Control method: Spray insecticides during the nymph blooming period. 50% dichlorvos emulsion 1500 times, 40% dimethoate emulsion 1000 times, 90% trichlorfon 1000 times, 50% malathion emulsion 1500 times have good control effects.

Banana crested net bug is also known as banana net bug, banana flower net bug, bright crown net bug. Adults and nymphs inhabit the back of banana leaves, and the affected parts show many small brownish-black spots, while the front of the leaves show white spots, and the leaves premature decay and wilt. Viral disease transmission has also been reported.

Crested netbugs belong to the order Hemiptera, the family of networms. It is distributed in banana areas all over the country. In some banana areas, 6 or 7 generations occurred every year, and the generations overlapped, and there was no obvious overwintering dormancy.

Adults lay eggs in the mesophyll tissue on the dorsal surface of the leaf, often in piles of 10 20 grains each, and are covered with purple gelatinous substance for protection. Adults prefer to feed and lay eggs on the top of 1 3 young leaves on the top of banana plants.

Control method: Spray insecticides during the nymph blooming period. 50% dichlorvos emulsion 1500 times, 40% dimethoate emulsion 1000 times, 90% trichlorfon 1000 times liquid, etc., all have good control effects.

Inspect the banana orchard, cut off the seriously damaged plants and leaves in time, and burn them or bury them in the soil for fertilizer to reduce the source of insects. If it is found that the damaged plants should be sprayed in time, especially in the early dry season, the effect of spraying and control is more obvious to reduce the damage of the year. When spraying, you can choose 50% dichlorvos emulsion or 90% trichlorfon, 40% dimethoate 1000 1500 times liquid, etc.

Banana crested net bugs belong to the order Hemiptera, the family of net bugs, and are distributed in banana orchards in all provinces (autonomous regions). In addition to the plantain genus, the hosts also include mountain ginger, jackapple, custard, etc. Adults and nymphs suck the sap on the underside of the leaves.

There are many dense brownish-black spots on the back of the affected leaves, and the front side is white spots, which affects photosynthesis, and when the insect population density is large, the leaves appear locally yellow and the whole leaf dies. Affects yield and quality.

Control methods of banana crown networm: Eliminate the source of the insect. If seriously damaged plants are found, the first damaged leaves should be cut off in time, burned or buried in the soil, and the insect source should be reduced.

Pharmaceutical prevention and control. It is found that the affected plant should be sprayed in time for prevention, especially in the dry season, the initial prevention and control is very important, and the commonly used agents are 50% malathion EC 1500 times, 50% pine borer EC 2000 times, 20% sutricarb EC 4000 times, or 10% cypermethrin (metrocarb) EC 3000 times.

Banana crown bugs are an important pest of bananas. Adults and nymphs feed on the back of the leaves, and the damaged leaves show many dense brownish-black spots, and the front of the leaves appears white spots, which affects photosynthesis, and when the leaves are seriously damaged, the leaves decay and wither prematurely.