In the process of growing cabbage, the eight-point gray lamp moth is a common pest, which has a great impact on the yield of cabbage and often gives vegetable farmers a headache. So how to control the eight-point gray lamp moth? Let's take a look at it!
1. Hazards
The eight-point gray lamp moth mainly harms cruciferous vegetables such as cabbage and rapeseed, as well as corn and soybeans, and eats the leaves with larvae, resulting in missing or holes in the leaves, which seriously affects the yield and quality of cabbage.
Second, the law of occurrence
1. The adult insects of the eight-point gray lamp moth are mostly active at night and have phototropism.
2. The eight-point gray lamp moth occurs in 2 to 3 generations every year, overwinters as larvae, begins to be active in March, and feathers in adults in mid-May.
3. After hatching, the eight-point gray lamp moth eats on the back of the leaf, and the end-aged larvae mostly pupate in the soil.
Third, prevention and control methods
1. After harvesting the crops, plough the land deeply, and then dry it to help eliminate the overwintering larvae on the soil surface or in the dead leaf residue.
2. Before the larvae are 2 years old, they can be sprayed with 40% cypermethrin emulsion 3000 times liquid, or 2.5% kung fu emulsion 2000 times liquid, or 20% green horse emulsion 2000 times liquid for insecticide, but it should be noted that the application site should not be sprayed on cabbage heart leaves.
The above is the way to control the eight-point gray lamp moth of Chinese cabbage sorted out by Xiaobian, interested friends want to know more about cabbage information, please pay attention to us!
Source: China Sannong Network