The efficiency of spawning machines for mixing insecticides into mushroom compost

Autor:	I. J. Wyatt, Barbara Gurney
Rok vydání:	1974
Předmět:	Diazinon Compost Ecology business.industry fungi Granule (cell biology) Pest control engineering.material Biology complex mixtures Horticulture chemistry.chemical_compound Tray chemistry engineering Ultraviolet light Mushroom compost business Agronomy and Crop Science Application methods
Zdroj:	Annals of Applied Biology. 78:125-138
ISSN:	1744-7348 0003-4746
DOI:	10.1111/j.1744-7348.1974.tb01492.x
Popis:	SUMMARY Insecticides incorporated into mushroom compost, using a spawning machine, are seldom mixed uniformly enough to achieve satisfactory pest control. The mixing efficiencies of various application methods and machines were investigated by mapping the distributions of fluorescent granules and emulsions under ultraviolet light. The pattern in which granules were applied to a compost block greatly affected the distribution after mixing but even uniformly peppering the surface resulted in acceptable concentrations in only 49% of the compost. Mixing twice increased this to 57%. With three times as many smaller granules, 89% of the compost was acceptably treated. Watering or spraying the compost with emulsions gave poor distributions except when the spray was directed into the spinner, which acceptably treated 83%. A machine which threw compost upwards into a hood beyond the spinner before it fell into a tray, gave better mixtures than conventional machines. The granule distribution affected the control of Heteropeza pygmaea larvae. Virtually complete control was obtained by peppering diazinon granules on to compost at 50 ppm a.i. and then mixing twice through a spawning machine.
Databáze:	OpenAIRE
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