Abstract
To spray with neoron 25% EC or metasystox 25% EC at concentration of 1: 1000 on soil surface failed to control the bulb mite in soil. Most of the bulb mite in soil were killed after fumigation with methyl bromide at the rate of 50g/m^2 or dazomet at 35g/m^2. The survivied mites started to increase their number rapidly 45 days after planting, and no significant difference in number of mites were found among treated and untreated plots on the 55th day after planting. To flood the blub-mite-infested soil for 5 days killed 96.1% of the mites, 100% of the mites were killed after 14 days. After 32 days, only one young mite was found hatching from 10 seriously infested corms.
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