1、 With what medicine

Pear Psylla is a common pest, which mainly endangers pear trees. If it is not controlled and prevented, it will endanger trees, cause the leaves on them to dry and fall off, and affect the yield and quality. If it is very dry in that year, this situation will be more serious. There are many kinds of drugs used for prevention and treatment, such as pirimidone, spirochete ethyl ester, avermectin, muwangte, nicotine matrine, avid mineral oil emulsion, etc. they can also be used together. The effect is also relatively good, and they can be purchased according to their own needs

2、 Medication period

1. The first control period is the hibernation period, which is about March. The adults and eggs of this insect will appear on the branches. At this time, conventional insecticides can be used, and the effect is better

2. Then comes the first generation of nymphs. At this time, some overwintering eggs will hatch in large numbers. At this time, drugs can kill most of the insects

3. The later stage is the first generation of adult control, which is a key period for early control, which can kill more than 90% of the insects. At this time, the flowers just start to fall, just when the adults are about to begin to eclosion