How to control rice green bug?

Rice green bug occurs in sweet orange producing areas in China. In addition to damaging citrus, it also harms rice, corn, peanut, cotton, beans, cruciferous vegetables, rape, sesame, eggplant, pepper, potato, peach, plum, pear, apple, etc. It damages tobacco plants with adults and nymph, stings and sucks the juice of tender leaves and tender stems at the top. Let's take a look at how to control rice green bug together!

Damage characteristics of rice green bug

The larvae overwintered among the leaves of conifers such as Cryptomeria, Cypress, Camellia, Citrus and the inner side of the roof of palm, straw and so on. In April, they moved to wheat and cruciferous vegetables. The first spawning plant was mainly potato, which had 3 generations a year. When the feeding plants and temperature are suitable, the larvae develop very fast, and 4 generations can occur in 1 year. Adult and nymph damage tobacco plants, prick and suck the sap of tender leaves and stems at the top, often appearing water-stained wilting at the punctured parts of leaves, and then drying up. Severe upper leaves or tobacco plant tip wilting.

Occurrence law of rice green bug

The rice green bug overwinters as adults on various hosts or in leeward shade. It has three generations a year in Yangcun, Guangxi and Guizhou. The eggs were laid on the leaves, 30~50 eggs were arranged in blocks, the newly hatched nymph gathered around the egg shell, and after 2 instars, they fed separately and became adults in about 50~65 days. The first generation adults appeared in June ~ July, the second generation adults appeared in August ~ September, and the third generation adults appeared in October ~ November. The occurrence of orange orchard in summer and autumn is related to the migration of harmful adults from rice fields to orange orchard. At this time, a large number of rice green bugs gather in citrus orchards to suck juice, which greatly affects the quality of fresh fruits and reduces the commodity value.

How to control rice green bugs?

1. Reduce insect source: During winter and spring, combine with accumulated fertilizer to remove weeds near the field edge and reduce overwintering insect source.

2. Artificial killing: Artificial killing is carried out by using the characteristics of adults 'poor ability to fly in the morning and evening.

3. Pesticide control: When the nymph is clustered near the egg shell and has not dispersed, 90% trichlorfon 700 times solution, 80% dichlorvos 800 times solution, 50% fenthion emulsifiable concentrate 1000~1500 times solution, 40% dimethoate 800~1000 times solution, 25% imine 700 times solution, or pyrethroid pesticide 3000~4000 times solution spray can be selected.