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Abstract of Lectures, Given At the Iiird Annual Meeting of the Society of Nematologists

Abstract of Lectures, Given At the Iiird Annual Meeting of the Society of Nematologists ABSTRACT OF LECTURES, GIVEN AT THE IIIRD ANNUAL MEETING OF THE SOCIETY OF NEMATOLOGISTS*) M. W. ALLEN: Ecology of cotton root-knot nematode in California. In field plots cropped continuously with cotton for 9 years the mean number of Meloidogyne incognita larvae per pint t) of soil at depths of 0-1, 1-2, 2-3 and 3-4 feet t) was 205, 281, 572 and 434 respectively. One year of fallow in which the soil was listed tt) three times during July and August reduced the mean number of root-knot larvae per pint of soil by 94, 79, 56 and 66 per cent at the four sampling depths. One year of undisturbed fallow reduced the mean number of larvae per pint of soil by 94, 81, 43 and 67 per cent. Root-knot larvae survived 2 years of undisturbed fallow at all four depths. The mean number of larvae per pint of soil after 2 years of fallow was 0.1, 3.9, 4.7 and 3.3 at the respective depths. Comparable samples from plots continuously cropped with cotton contained an average of 209, 175, 350 and 369 at the four depths. When one crop of cotton was grown following two years of fallow, the larval http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

Abstract of Lectures, Given At the Iiird Annual Meeting of the Society of Nematologists

Nematologica , Volume 11 (1): 33 – Jan 1, 1965
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Publisher
Brill
Copyright
© 1965 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529265X00456
Publisher site
See Article on Publisher Site

Abstract

ABSTRACT OF LECTURES, GIVEN AT THE IIIRD ANNUAL MEETING OF THE SOCIETY OF NEMATOLOGISTS*) M. W. ALLEN: Ecology of cotton root-knot nematode in California. In field plots cropped continuously with cotton for 9 years the mean number of Meloidogyne incognita larvae per pint t) of soil at depths of 0-1, 1-2, 2-3 and 3-4 feet t) was 205, 281, 572 and 434 respectively. One year of fallow in which the soil was listed tt) three times during July and August reduced the mean number of root-knot larvae per pint of soil by 94, 79, 56 and 66 per cent at the four sampling depths. One year of undisturbed fallow reduced the mean number of larvae per pint of soil by 94, 81, 43 and 67 per cent. Root-knot larvae survived 2 years of undisturbed fallow at all four depths. The mean number of larvae per pint of soil after 2 years of fallow was 0.1, 3.9, 4.7 and 3.3 at the respective depths. Comparable samples from plots continuously cropped with cotton contained an average of 209, 175, 350 and 369 at the four depths. When one crop of cotton was grown following two years of fallow, the larval

Journal

Nematologica – Brill

Published: Jan 1, 1965

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