Control method of blueberry grub

Grub is the main pest in the process of blueberry planting, which mainly occurs in the blueberry root system. Blueberries eaten by grubs turn yellow at first, and eventually wither and die, and cause root rot, causing great harm to blueberries. So how do blueberries control grubs? Let's take a look.

1. Hazard identification

The grub mainly harms the root system of the plant, which is generally not seen when it breaks out, so it is necessary to identify it first. After eating the fibrous root of blueberry, the grub will soon appear water-deficient plants, yellowing in the early stage and drying up the leaves in the later stage. There is a great possibility of being harmed by grubs. Then it is to look at the root, when seriously bitten, only the main root is left, and then there is a worm hunt. when there are two symptoms of appeal, the root soil is cut open, and grubs can often be found.

2. Agricultural prevention and control

In the annual winter cutting, cut off diseased branches, insect branches, remove weeds, fertilize in autumn and winter, turn the soil 20 cm deep, increase the number of ploughing, deep ploughing and harrowing, intensive cultivation, so that a large number of overwintering larvae can be eliminated. After that, strengthen fertilizer and water management, increase the application of phosphorus and potassium fertilizer and micro-fertilizer, promote the growth of blueberries, improve the ability to resist pests, and remember not to apply immature farm manure.

3. Physical prevention and control

Physical control is mainly to control adult mating and spawning. At this time, the key to the control of grubs can be trapped by insecticidal lamp, sugar and vinegar, artificial capture and poisonous soil. These methods can well control grubs.

4. Biological control

At present, the biological agents for the control of grubs are Beauveria bassiana, Beauveria bassiana, Bacillus thuringiensis and Paecilomyces, among which Beauveria bassiana and Beauveria bassiana are one of the most ideal agents for grub control, which are highly efficient, non-toxic and pollution-free. In the seriously harmful plots, we can also make use of the scattered open space at the edge of the field, and we can also sow plants such as line hemp, abutilon or castor early at the right time. In the peak period of grubs, hemp stems and leaves can be mashed and watered with water for 2-3 days, so the insecticidal effect is better.

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