Germinability of treated and untreated lots of vegetable seed in Pythium-infested soil and in the field

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2017-06-08
Authors
Porter, R.
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Seed lots of beans, beets, carrots, onions, peas, popcorn, soybeans, spinach, sweet corn and tomatoes were obtained from several sources. Tests with treated and untreated seed were made in sand, blotters or towels using the standard methods recommended in rules for seed testing. In addition, tests were made in soil naturally infested with Pythium debaryanum Hesse and Pythium graminicola Subr. as well as in the field. Temperature and moisture conditions in the field were occasionally optimum or nearly so but more frequently the temperature-moisture relationship was such as to provide an environment far below the optimum for germination. The data obtained from the several tests are summarized herewith.

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