Chemical sterilants May Replace Steaming For Seedbeds
The article discusses switching from steaming to chemical sterilants for tobacco seedbed sterilization. It notes fall applications may improve weed and disease control while spring use of Vapam has yielded inconsistent results in cool soils.
Fall sterilization best for seedbed sanitation in tobacco
Experiments at the Delhi Tobacco Substation indicate fall chemical sterilization with Vapam or AA-50 yields satisfactory results when seedbeds are well prepared. Key steps include muck removal, spading to depth, warming soil, maintaining moisture, and following manufacturer rates, with greenhouse closed until spring and formaldehyde treatment for disease control.
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