Occurrence causes and control methods of peanut grub

Peanut is the most important cash crop in China. With the continuous increase of peanut planting area, the yield increases year by year, but the peanut grub is becoming more and more serious. It will eat peanuts in the growth and harvest of peanuts, causing peanuts to have wormholes, seriously affecting the yield and quality, so what is the cause of grubs? How to prevent and cure it? Let's take a look.

I. causes of grubs

The main results are as follows: 1. There is no obvious change in the cultivation of peanut, the cultivation is not deep, only shallow ploughing, or even no-tillage, can not destroy the living environment of grubs at all, so the grubs become more and more serious year by year.

2. In rural areas, most farmers like to fertilize with farm manure such as chicken manure or pig manure, but these fertilizers are applied directly without full maturity, which contains a large number of bacteria and insect eggs, which also causes grubs to ravage.

3. Many farmers have improper pesticide control, such as too low concentration or insufficient spraying, or long-term use of a pesticide control, resulting in drug resistance, so grubs become more and more serious year by year.

2. Control methods of grubs

1. Deep digging and soil preparation

Deep soil preparation should be done once after harvest and before the year, requiring a depth of more than 25 cm, combined with watering frozen water, so that the overwintering eggs can be effectively killed. When using farm manure, microbial agents must be added for full ripening fermentation, which can effectively avoid grub breeding.

2. Pre-sowing treatment

Before sowing, 0% chlorpyrifos 100 ml + 70% imidacloprid 15 g + 50% thiram 40 g can be used for seed dressing, which can not only effectively control grubs, but also has excellent control effect on other underground pests and diseases. Or sprinkle 3% phoxim granule 2 kg per mu before soil preparation, which can also prevent the harm of underground pests.

3. Prevention and control during the growing period

Grubs mainly occur in the pod growth period, so you can use 250ml% phoxim and 30kg soil around peanut plants from flowering to podding, that is, from July to August, which can be effectively controlled. Or use 0% phoxim 800 times liquid, remove the sprayer head, carry on the root irrigation treatment, or use 40% isosalidophos 800 times, carry on the root irrigation treatment, must be carried out during the flowering and needle stage.

The above is the introduction of the causes and control methods of peanut grubs. I hope I can help you. If you want to know more about it, please follow us.