Prevention and control techniques of peanut major pests and diseases 2

2 Peanut pests

2.1 Locusts

Peanut flowering under the needle period is an important period for aphid damage. In this period, the aphid mainly damages the calyx tube and fruit needle, making the peanut plant dwarf and the leaf curling, which seriously affects the flowering needle and the result. As a result of the large amount of “dew” discharged by the locusts, the fungal parasitism caused the stems and leaves of the plants to become black and even wither. Peanut locusts, apart from the above, also transmit the major mediators of viral diseases. The agent can be sprayed with 10% imidacloprid wettable powder or 50% evacuation fog wettable powder 150g/hm2 water 600 ~ 750kg/hm2.

2.2 Underground pests

Peanut underground pests mainly include tigers and earthworms. They are not only long-lasting but also serious. Often caused by lack of seedlings and ridges, resulting in reduced production, is currently the main pests affecting peanut production. Underground pests often inhabit underground activities, directly harm the roots and fruits of peanuts, and have strong concealment and control difficulties. Therefore, we must adopt a comprehensive approach to prevention and control.

2.2.1 Rational rotation

Peanuts are good forehead crops such as corn, millet, etc., to avoid heavy crops and pods.

2.2.2 autumn deep

In the fall, deep plowing can turn the pests to the ground, causing them to be exposed to the sun, or to be eaten by birds, reducing the source of insects.

2.2.3 Seed coating

Seed coating before sowing, this method can also effectively prevent rat damage.

2.2.4 Soil Treatment

When planting before sowing, use 3% Phosphate granules 22.5 ~ 30.0kg/hm2 evenly spread on the field surface, shallow diversion of earth or sprinkle the chelated phosphate granules in the sowing ditch, and then sowing; also can be insecticide Stir in organic fertilizer as a base fertilizer.

2.2.5 Irrigation

In late June, in the hatching period and young age of the beetle, pungent granules of 35-45kg/hm2 and fine soil 250-300kg/hm2 are sprinkled on the roots of peanuts, and the soil is soaked in the ground. It is also possible to use 50% phoxim granules or 90% trichlorfon 1000 times to root.

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