条件筛选
-
No Effect from Pesticides Means They're Fake? Actually, You Just Didn't Get These Three Things Right
Cai Xiaomei's Introduction: Some people say that many pesticides have no effect after being sprayed, and some even blame "good pesticides" as "fake pesticides" because of poor efficacy. Not...
-
There's more to choosing an insecticide than meets the eye: remember these four things to look for
(1) Derris extract is a botanical insecticide extracted from the roots of derris, with contact and stomach poison action, and is quite effective against aphids and lepidopteran larvae. It is extremely safe for humans, livestock and crops, and is especially suitable for use on fruit, vegetables, tea and mulberry; the usual spray is a 500-800 times dilution of 2.5% derris extract emulsifiable concentrate. (2) Bacillus thuringiensis belongs to Bacu...