The peak growth period of carob is when the temperature is high and the rain is heavy, and the pests are serious. If the management fails to keep up, it is easy to cause the quality and the yield to decrease. In terms of prevention and control measures, agricultural prevention and control should be given priority, and physical and chemical prevention and treatment should be emphasized equally.
Pea pod borer Pea pod borer is a larva-infested period from June to October every year. Adults have phototaxis, and their eggs are scattered on tender horns, flowers and petioles. Newly-hatched larvae eat into tender horns or flowers, causing flowers and horns to fall off. Older larvae eat into carobs and eat on them. Damaged beans often cause damage after rain. rot. Larvae have the habit of coming out at night and backlit. They hide in flower organs, beans or curled leaves during the day, expelling insect dung to block the boreholes. Except for rainy days and sporadic activities during the day, they usually start crawling through the wormholes in the evening. Go out and stop going out in the early morning of the next day.
Prevention:
1. Remove the fallen flowers and horns in the field, and remove the damaged leaves and beans to reduce the source of insects.
2. Set up a black light lamp and use the phototaxis habit of adults to trap and kill.
3. Choose 5% fipronil 2000 times solution, 2.5% deltamethrin 3000 times solution and other medicaments, spray once every 10 days.
Leaf miners are harmful by larvae sneaking into the leaves, eating the leaf flesh and leaving only the epidermis, forming a tortuous tunnel, which affects the growth of plants.
Prevention:
1. Use sticky insect board to trap and kill adults.
2. Adults lay eggs mainly on the back of the leaf, and spray the liquid on the back of the leaf. At the beginning of the larval damage, choose insecticides with both systemic and contact effects, such as 48% lesbian EC 800-1000 times solution, and spray it continuously for 2 to 3 times.
The spider mites on the red spider beans are also called spider mites. August to September is the peak season. Adult and nymphs feed on young leaves, and the leaves shrink and fall easily after being damaged. In the early stage of occurrence, the leaf surface turns red after chlorosis and white. The fine wire mesh on the back of the leaf can directly see the scope and area of ​​occurrence. Immediately after the occurrence, spray a pesticide enclosure with a sprayer, the scope of which is slightly larger than that of the occurrence, and then thoroughly spray the plants in the enclosure to prevent spreading.
Prevention:
1. Pay attention to the monitoring of the insect situation. If a small amount of damage is found, the insect leaves should be removed and burned in time. In case of drought, timely irrigation and fertilization should be paid attention to.
2. Use selective acaricides for general treatment, before the pod setting period and after the harvest of the pods, focusing on the even spray on the back of the leaves. It can be sprayed with 1.8% avermectin EC 1500-2000 times, 15% pyridaben EC 3000 times, 20% Mengke EC 2000 times, etc., pay attention to the rotation of medication, and advocate the use of high-efficiency, low-toxic biological pesticides.
Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
Automatic Cable Reel,Automatic Water Hose Reel,Industrial Water Hose Reel,Automatic Garden Hose Reel
NINGBO QIKAI ENVIRONMENTAL TECHNOLOGY CO.,LTD , https://www.water-hose-reel.com