A STUDY OF THE EFFECTS OF TEMPERATURE AND OTHER FACTORS UPON THE GERMINATION OF VEGETABLE CROPS: II. PEAS

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Abstract
A series of trials was conducted at two periods, spaced a year apart, to study the effect of temperature and of the duration of exposure upon the germination of three pea varieties, Lincoln, AA-15 and Thomas Laxton, without the complicating effects of soil-borne organisms. The results indicate that the germination of peas, when sown in vermiculite and held in controlled temperature chambers, was significantly reduced as the temperature was lowered from 40° to 35° F. The duration of exposure had little effect upon the over-all mean, although differences were significant in the first trial period. Varietal behaviour differed as a result of temperature and of duration of exposure. It is concluded that peas will tolerate exposure to temperatures as low as 40° F. for considerable periods of time, providing steps are taken to protect the seed against pathogenic organisms.

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