Abstract
Abstract Twenty-four mushroom growing trays (0.37m2 X 0.15m), each containing 22.6 kg (72% water) of deammoniated and pasteurized Phase II wheat-straw-bedded horse manure, were individually spawned with llOg of light cream mushroom spawn (MGA #801) and placed into a single mushroom production room. During the spawn run 480 female sciarids were released into the production room and an additional 1000 females 26 days alter spawning. For the test, Dimilin 25W at a formulation rate of 412 g/100m2 was applied as a drench to the casing surface in the first casing water application. Three pasteurized casing materials were used: (1) Canadian Sphagnum Peat Moss, (2) mineral soil, and (3) mixture of weathered spent compost and Canadian Sphagnum Peat Moss (1:1, by volume). Evaluation of diflubenzuron to control sciarid larvae in each casing type was measured through yield assessment and larval sampling in the casing.
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