Matrine, azadirachtin, propafenone (pyridaben), propafenone, triazole tin, nisolone (hexythiazox), abamectin, crystal omethoate, pine alkali mixture, amitraz, acarbose (diafenthiuron), bifenazate, ethiconazole, fenpropathrin, phenylbutamol, bromopropyl ester, spirodiclofen and spirodiclofen.
So what kind of medicine should be used to control strawberry Laodelphax striatellus?
First of all, traditional medicine
Avermectin, pyridaben, hexythiazox, spirodiclofen, propargite, diafenthiuron, etc. It has been used for a long time, and the planthopper has formed certain resistance to it, which will also cause certain harm to bees.
Second, new drugs.
Ethazosin:
Eththiazole is a non-temperature-sensitive, contact-killing and selective acaricide with unique structure. There is no internal suction, so it is better to use a full sprayer and spray the opposite side of the leaves.
It is safe, efficient and has a long duration, which can effectively prevent the resistant mites caused by the existing acaricides and has good resistance to precipitation and washing. If there is no rainstorm 2 hours after application, there is no need to spray again.
At the initial stage of mite damage, spray with 3000-4000 times diluted water of ethoconazole. It can effectively prevent all larvae (eggs, young mites and nymphs) of mites. The duration can reach 40-50 days. The effect of mixed application with abamectin is more prominent.
Spirulina ethyl ester:
It is active to eggs and larvae of rice planthopper, lasting for a long time and selective to bees. It can bring efficient prevention for nearly 8 weeks.
Bifenazate:
Bifenazate is a new acaricide for selective foliar spraying. It is reasonable for all aspects of daily life of mites, has ovicidal activity and knockout activity for adult mites (48-72 hours), and has long duration and low risk for predatory mites.
Flufenapyr:
It is active in all stages of pregnancy of rice planthopper, especially for young mites, with high activity and quick effect. According to the experimental comparison, buflomedil is superior to spirodiclofen and avermectin in all levels.
Thiazoxystrobin:
Azoxystrobin is a non-inhalable acaricide, and the key is to kill mites according to contact toxicity and stomach toxicity.
Killing eggs and mites at the same time has a high efficiency for synthetic mites of eggs, young mites and nymphs full of insects. Long duration, which can reasonably reduce the number of times of application every quarter.
The 3000 ~ 6000 times solution of 30% ethiprole granules has good practical effect on controlling rice planthopper, and it is expected to become a substitute acaricide.
Pyrimethamine:
Pyrimidine has good contact toxicity and stomach toxicity, which is reasonable for every characteristic of harmful mites, including eggs, nymphs and adults, and has good quick-acting effect, lasting for more than 30 days.
4,000 times spray can be used to control planthoppers on citrus trees, apricot trees, vegetables and fruits, and 4,000 times spray can be used to mix diafenthiuron in areas with serious resistance.
Third, mixed drugs.
Avermectin+pyridaben;
Spirulina ethyl ester+avermectin;
Bifenazate+spirodiclofen;
Bifenazate+etofenazole;
Ethimazole+avermectin;
43% bifenazate 2000 times+spiroethyl ester 65438 times +0500 times has excellent control effect;
In areas with severe resistance, a 4000-fold sprayer mixed with fenpropathrin and diafenthiuron can be used.
Four. FREQUENTLY ASKED QUESTIONS
1. The dosage of propargite (propargite) is strongly recommended not to be used for strawberry seedlings, which has serious fertilizer damage.
2. Triazoltin and phenylbutazone are easy to damage fertilizers;
3. Matrine and resveratrol. If it is pure (without hidden ingredients), the actual effect is generally weak and it is more likely to produce drug resistance;
Finally, it is suggested that strawberry seedlings should be used as fresh fruit, and the safe observation period of chemical fertilizer should be paid attention to.