THERMAL DEATH POINT OF CERTAIN WEED SEEDS

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Abstract
A series of weed seeds comprising seven species and representing five families was studied to determine the effect of heat on subsequent germination. Lethal temperatures for 15 minutes' heating varied from 85° to 105 °C.The results indicate that there is a critical temperature below which moderate periods of heating have little effect on viability. At higher temperatures the germinating power falls off rapidly.