What are the prevention and control methods of muskmelon thrips?

The damage of thrips on muskmelon tends to spread and has become one of the main small pests on protected muskmelons. It has the characteristics of strong concealment and difficulty of prevention and control. So what are the prevention and control methods of muskmelon thrips?

1. Agricultural control of muskmelon thrips

The removal of weeds and withered branches and leaves in the field and concentrated burning or deep burial can eliminate some adults and nymphs.

2. Physical control of muskmelon thrips

To prevent aphids and thrips from entering the shed with the airflow, the aphids and thrips have the habit of yellowing and thrips have the habit of turning blue, and setting yellow and blue armyworm boards in the field can trap and kill adults, and the height of the armyworm board is suitable to 10~20cm from the plant growth point.

3. Biological control of muskmelon thrips

(1) Control of aphids by discolored lady beetles.

Aphids appear sporadically, hang egg cards in the field, 50-60 pieces / mu, fix egg cards at the petioles of vegetables that are not exposed to direct sunlight, avoid direct sunlight, when the population base is large, mainly release larvae or adults, spread on the "central plant", 2-4 heads per square meter.

(2) the control of thrips by Pasteurella burnetii

In the early stage of pest occurrence, when the density is low (generally the number of pests per leaf is less than 2), when the pest population density is high, the insecticide should be applied first for control, and the natural enemies should be released after an interval of 10 to 15 days. Release 70 million 100 bags per mu (200 active Amblyseius pasteuri per bag). It is generally released twice in the whole growing season, and the interval is 7 to 10 days. If chemical insecticides and acaricides need to be used to control other insect pests after release, they may be killed and natural enemies need to be replenished and released 10-15 days after drug use.

(3) East Asian flower bugs control thrips.

Natural enemies are applied in the early stage of pest occurrence and when the density is low (generally the number of pests per leaf is less than 2). Spread in the field, apical leaves, near flowers, released in the morning or evening, the first time, early flowering, 2 heads per square meter; the second time, 1 week later, 2-3 heads per square meter.

(4) Biological agents

You can choose 60 grams / liter ethyl spinosad suspension 1500 times, or 25 grams / liter spinosad suspension 1000 times, or 1.5% matrine soluble agent 1000 times, or 99% mineral oil 500 times, etc.

(5) Chemical pesticides

It can be sprayed with 240g / L spiroethyl ethyl suspension 4000 / 5000 times, 25% thiazine water dispersible granules 5000 / 8000 times, or 50% fluacetamide water dispersible granules 15000 times, or 10% fluacetamide water dispersible granules 1500 times, or 25% imidacloprid wettable powder 3000 times, or 5% acetamiprid wettable powder 2500 times. At the same time, according to the characteristics of thrips during the day and night, medication should be used in the afternoon, pay attention to rotation or alternate use of drugs, in order to delay the emergence of drug resistance.