SHORT COMMUNICATIONS S. K. PRASAD 1) 2) & J. M. WEBSTER 1) 3): The effect of amino acid antimetabolites on four nematode species and their host plants. Peacock (1966) discussed the properties of potential systemic nematicides and Overman & Woltz (1962) showed that amino acid antimetabolites applied to the soil decreased the numbers of three species of nematode infecting tomato plants. This note describes the effects of eight DL amino acid antimetabolites on four nematode species and how these effects are modified by soil microorganisms. Nacobbus serendipiticus Franklin egg sacs (totalling about 125 eggs per plant) were added to the soil surrounding the roots of 7.5-cm tomato (Lycopersicon esculentum L.) seedlings and after 7 weeks, the washed roots were examined for nematode galls. An aliquot sample, containing 2,430 larvae, was taken from a suspension of crushed Heterodera avenae Woll. cysts and added to pots of soil each of which contained four 5 cm wheat (Triticum ae,rtivum L.) seedlings; after 10 weeks the washed roots and soil were examined for new females. Aliquot samples, each containing fifty Ditylenchus dipsaci (Kühn), were taken from a 5%> carboxymethyl-cellulose suspension and in- oculated with a hypodermic syringe into the scape of 7.5
Nematologica – Brill
Published: Jan 1, 1967
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