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FURTHER OBSERVATIONS ON THE EFFECTS OF PEAS, BEANS AND VETCH UPON SOIL POPULATION LEVELS OF PEA ROOT EELWORM, HETERODERA GÖTTINGIANA LIEBSCHER*) BY F. G. W. JONES (Rothamsted Experimental Station, Harpenden) AND F. MORIARTY (School of Agriculture, University of Cambridge) WINSLOW (1955) gave the results of microplot and garden plot experiments in which, in 1954, he tested the effects of various legu- minous plants upon the soil population level of pea root eelworm (Heterodera gbttingiana Liebscher). In his microplot experiment, starting with a uniform initial population of 127 egg/g. air dried soil, peas maintained the initial population, broad bean, lentil and sweet pea caused considerable reductions, while other leguminous plants caused smaller reductions of about one third, comparable with the effects of fallowing. The Aldringham soil was a light sand and, in it, under eelworm attack, the peas grew to a height of 3 in. only and failed. The adjacent garden plots were on heavy soil overlying chalk marl and were inoculated artificially with quantities of Aldringham soil so that the initial eelworm population was low; peas sown on . these plots grew normally and gave considerable increase in popula- tion. Field bean on these garden plots behaved in
Nematologica – Brill
Published: Jan 1, 1956
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