Efficacy Test of 73% Propargite EC on Control of Panonychus Ulmi(Koch)
Wan Wen-lu
Abstract
Wan Wen-lu
Abstract
Result of efficacy test of 73% propargite on control of Panonychus Ulmi(Koch)was good.It could not only safe for apple trees but also endure for a long time,so it had a good promising prospect.In production from 2 000 to 3 000 times liquid of 73% propargite EC were suggested,and the time internal should be 7~10 d.
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Result of efficacy test of 73% propargite on control of Panonychus Ulmi(Koch)was good.It could not only safe for apple trees but also endure for a long time,so it had a good promising prospect.In production from 2 000 to 3 000 times liquid of 73% propargite EC were suggested,and the time internal should be 7~10 d.
Key concepts: Panonychus ulmi, Mathematics, Biology, Horticulture, PEST analysis, Tetranychus urticae