How to prevent and control long cowpea disease and insect pest leaf miner fly?

Eliminate leaf miner flies in time, reduce the spread of pests and diseases, remove weeds in the field, select disease-resistant varieties and excellent varieties, prevent water accumulation in the field, and remove fallen leaves and pods in agricultural control, reduce insect sources, and use frequency vibration insecticidal lamps for booby-trapping.

It can be controlled by pesticides, spraying some pesticides on the plants, which can kill those pests.

Spray pesticides. Because after the long cowpea in my house is sprayed with pesticides, the leaf miners die, so I should spray pesticides to control them.

Pesticides should be sprayed to prevent pests and diseases, and they should be watered more often, and weeding should also be done frequently, so that they can be well controlled and the results are also very good.

1. Increase the permeability of the greenhouse, remove the damaged leaves in time, take them out of the shed and bury them deep or burn, and the vegetable production in the later stage should be uprooted and destroyed in time to reduce the source of insects.

2. Sweet and sour liquid trapping at the peak stage of adult worms. Mu uses a sweet and sour liquid to trap and trap a basin, and put dichlorvos in the basin to trap and trap.

3. Use yellow plates to trap and kill adults. 20-30 yellow boards per mu of greenhouses, and replace the boards once every 7-10 days.

The larvae feed on the main stem, side branches and petioles of the crop, forming a zigzag tunnel in the stem, which makes the leaves of the affected crops yellow, the pods reduced, the plants dwarf, and the dead in severe cases. Pesticide prevention should be applied immediately after the bean seedlings are unearthed. When it is severe, spray once every 5-7 days, and spray 3-4 times in a row.

The control agent can choose 98% Bataan soluble powder 2000 times, 48% Lesben EC or 48 Tianda chlorpyrifos 1000 times, Nongdile EC 1000 times, 5% Ka Ke dispersible liquid 1500 times, 10% depletion suspension 1000 times, 50% phoxanthion EC 1000 times, 2% Yundayun EC 1000 times, 90% Wanling wettable powder 3000 times, etc., alternately.

First of all, it will cause the stem to be hollow, and in the process it will also cause some damage to the surface of the leaves, in this case, the first thing is to spray a large number of pesticides, for a simple cleanup of this pest.

Before the overwintering generation of adults emerges, the host crop straw was treated, and the soybean field was deeply turned to eliminate some insect sources.

2. When adjusting the sowing period, sowing seeds should be sown in time after the summer harvest, and early and medium-maturing varieties should be selected to stagger the growth period of the most suitable spawning for adults and reduce the amount of ovipositions. Appropriate application of phosphorus, potassium fertilizer and other health care cultivation measures to improve the host's resistance.

Summary. With 330 grams of 150-200 ml of pendimethalin emulsifiable concentrate per mu and 40-50 kg of water spray, how to control the leaf miner fly of Phaseolus vulgaris?

Use 330 grams of pendimethalin EC 150-200 ml per mu, add 40-50 kg of water to spray, also known as rape leaf miner fly, mainly to harm leaves, but also to damage shoots and green pods. The larvae feed mainly on the leaves or petioles of plants, and the formation of linear or curved and coiled irregular insect channels affects plant photosynthesis. 【Prevention and control methods】a Remove residual branches and leaves:

Timely removal of residual branches and leaves after harvest can kill a large number of eggs, larvae and pupae and reduce the overwintering base. b Protection of natural enemies: pay attention to the protection and use of natural enemies of pea leaf miners, especially parasitic Shenyuan natural enemies, which have a strong control effect on larvae and pupa.

C. Pharmaceutical control: In the peak period of adult oviposition, you can choose deltamethrin EC or 20 fenvalerate EC 3000 times, or 50 phoxanthion EC or 25 quinthion EC 1500 times, or 80 dichlorvos EC or 90 crystal trichlorfon 1000 times, or 2 parts of phoxanthion plus fenvalerate 1 part mixture 3000 times liquid spray, 7-10 days 1 time, rotation drug prevention and treatment 2-3 times.

Is it useful to have leaf miners in peas with fly amine? Now is the flowering, fruiting period, what to do.

The pro is useful and can be hit.

I once had a bad shot because pea leaves can't absorb the potion, so I asked if I could add a small amount of dish soap to mix it with the potion.

The effect is not good, you can use it, use 330 grams of pendimethalin emulsifiable concentrate 150-200 ml per mu, add 40-50 kg of water spray, fly amine has been bought, I ask you if you can add a small amount of dish soap mixed with the potion, and then prevent and control, you can add, but the effect will not be too good.

Kidney beans are common vegetables in life, and leaf miners are common insect pests in the process of kidney bean planting, which will lead to a serious reduction in kidney bean yield if not controlled in time. This article summarizes the precautions for the prevention and control of kidney bean leaf miner flies for your reference.

Kidney bean leaf miner fly, belonging to the order Dipter, leaf miner fly, also known as rape leaf miner, commonly known as arch leaf worm, leaf leaf worm, leaf maggot, etc. It is a polyphagous pest, there are more than 130 kinds of host plants, mainly in vegetables for kidney beans, broad beans, chrysanthemum, celery, cabbage, radish and cabbage, etc., is the dominant species of leaf miner fly, in recent years in our province has aggravated.

for harmful characteristics

The larvae of the kidney bean leafminer penetrate into the leaf epidermis and feed exclusively on the mesophyll, zigzagagging between the upper and lower epidermis, leaving behind curved, irregular white or gray-white tunnels. The leaf tissue is destroyed, photosynthesis is weakened, and the plant grows slowly. It seriously affects the edible and commercial properties of leafy vegetables, and has a great impact on the yield and seed fullness of bean products.

Biological characteristics and occurrence patterns

Adult kidney bean leaf miner flies prefer to lay eggs on the dorsal edge of young leaves, first piercing the epidermis before laying eggs. Each female can lay 50-100 eggs, and the eggs are scattered. The egg period is about 10 days in the spring and 4-5 days in the summer.

After the eggs hatch, they are infested in the leaves, the larvae have a total of 3 instars, and the larval stage is generally 5-15 days, and the mature larvae pupate in the leaves, and the pupal stage is 10-20 days. Temperature has a great influence on the development of kidney bean leaf miner: generally the suitable temperature of adults is 16-18, and the larvae are about 20, and the high temperature is not conducive to the development of kidney bean leaf miner, and the larvae will stop growing and pupate in summer when the temperature is too high.

In addition, the length of the generation cycle of leaf miner flies also varies with the temperature, at 13-15 hours, a generation is about 30 days, and at 23-28 hours, it is only about 14 days. Despite the current high temperatures, leafminer flies still occur. From September to October, the temperature drop occurs and gradually worsens.

In November, due to the drop in temperature, the damage will also be reduced until the pupation overwinters.

Prevention and control methods

1. Agricultural control: Before a large number of occurrences, weeds inside and outside the field, treatment of residues, timely removal of old leaves of cruciferous vegetables to reduce the base of insect population. 2. Biological control.

In greenhouses or greenhouses, kidney bean leafminer flies are released during the egg stage. 3. Chemical control. The adult worm sucked the flower dense habit, and the adult worm was trapped, and the adult worm was trapped.

In the peak oviposition period or early hatching of adult worms, use 20% fenvalerate 300 times, or 50% phoxanthion 1000 times, or larvalurin 2000 times, or 50% fly maggot net 1000-2000 times, spray control, once every seven days, 2-3 times of continuous medication has a better effect. Be careful not to use the drug 10-15 days before harvesting.

The leaf miner fly is a parasitic pest that parasitizes dozens of common vegetables, and Yunyun is one of them. It eats away at vegetable leaves as larvae in the spring, and decreases in the summer when the temperature rises. It can take advantage of its feeding habits and use trichlorfon mixed with sugar water to trap leaf miners.

This is because the plant has some bacteria on it, and it also causes some unpleasant odors. Pesticides should be sprayed in a timely manner, and water and fertilizer management should also be done well.

Kidney bean fly is a polyphagous pest, with more than 130 species of host plants, mainly kidney beans, broad beans, chrysanthemum, celery, cabbage, radish and cabbage on vegetables. The control methods include weeds inside and outside the field, treatment of residues, timely removal of old leaves of cruciferous vegetables before a large number of occurrences, and reduction of insect population base. In greenhouses or greenhouses, kidney bean leafminer flies are released during the egg stage.

The drug should be taken every seven days, and the effect of continuous medication 2 or 3 times is better. Be careful not to use the drug 10-15 days before harvesting.

In recent years, leguminous vegetables have the most species of leaf miner flies, the most serious damage, including pea leaf miner fly, American spotted leaf fly, South American spotted leaf fly, etc., the relevant prevention and control drugs can refer to the section of nightshade vegetables in the spotted fly pesticide control, but pay attention to avoid the use of dichlorvos, leguminous crops are more sensitive, easy to cause pesticide damage.