The aphids of the peppers are entangled in the leaves, young leaves, pedicels and fruit of the host, and the leaves are yellowed and curled, the plants are low, the growth is bad, and the stagnation is severe. In addition, aphids are still the medium of transmission of a variety of viruses, leading to the prevalence of melon virus disease, resulting in severe crop yield reduction.

Morphological characteristics

Capsicum aphids are small, with a body length of about 2.1 to 2.3 mm. The color variation is large, such as green, light yellow, dark green, purple brown, orange red, some thin spot white powder, head and chest black. In the history of the day, there are many varieties of individual, there are sexual reproduction and orphan reproduction, so it is more difficult to distinguish between varieties.

Living habit

When the collective density of aphids is too high or the plants are aging or growing poorly, many winged aphids will be dispersed and dispersed, and will be spread by the wind to expand the scale. The winged adult has a strong tendency to yellow, and has a negative tendency toward silvery white. In a warm and dry environment, when the temperature is between 18 and 25 °C and the relative humidity is below 75%, many episodes can occur, spring and summer. The beginning and the fall are the peak period.

Control method

1. Clean the pastoral: remove the weeds in the field and its neighbors, and reduce the source of insects.

2, cover up cultivation: the use of aphids on the silver gray has a negative traits, reaching the intention to avoid disease.

3, yellow trap: the use of mites on the yellow has a characteristic, set up a yellow trap in the field, trapping winged cockroaches. The yellow plate is 1×0.2 m in size, and the yellow part is coated with motor oil. It is inserted between the rows of peppers, 60 cm above the plant, and 30 pieces per acre.

4, chemical control: in the initial stage with 10% high-efficiency Dagong WP 1000 times solution, or 50% anti-Pu Wei WP 1000 times solution, or 10% more than the emulsion 1000 times solution, or 10% insect螨 3000 3000 times liquid, or 50.5% agricultural land 1500 times liquid, or 47% lesbian emulsion 1000 times liquid, etc., alternately used, every 7 to 10 days, once or twice, 3 to 3 times.

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