Effects of Planting Date, Small Grain Crop Destruction, Fallow, and Soil Temperature on the Management of Meloidogyne incognita

The effects of planting date, rye (Secale cereale cv. Wren Abruzzi) and wheat (Triticura aestivum cv. Coker 797), crop destruction, fallow, and soil temperature on managing Meloidogyne incognita race 1 were determined in a 2-year study. More M. incognita juveniles (J2) and egg-producing adults were...

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Détails bibliographiques
Publié dans:Journal of nematology. - 1969. - 22(1990), 3 vom: 16. Juli, Seite 348-55
Auteur principal: Johnson, A W (Auteur)
Autres auteurs: Motsinger, R E
Format: Article
Langue:English
Publié: 1990
Accès à la collection:Journal of nematology
Sujets:Journal Article Meloidogyne incognita Secale cereale Triticum aestivum fallow root-knot nematode rye trap crop wheat
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520 |a The effects of planting date, rye (Secale cereale cv. Wren Abruzzi) and wheat (Triticura aestivum cv. Coker 797), crop destruction, fallow, and soil temperature on managing Meloidogyne incognita race 1 were determined in a 2-year study. More M. incognita juveniles (J2) and egg-producing adults were found in roots of rye planted 1 October than in roots of rye planted 1 November and wheat planted 1 November and 1 December. Numbers of M. incognita adults with and without egg masses were near or below detectable levels in roots of rye planted 1 November and wheat planted 1 November and 1 December. Meloidogyne incognita survived the mild winters in southern Georgia as J2 and eggs. The destruction of rye and wheat as a trap crop 1 March suppressed numbers of J2 in the soil temporarily but did not provide long-term benefits for susceptible crops that followed. In warmer areas where rye and wheat are grown in winter, reproduction of M. incognita may be avoided by delaying planting dates until soil temperature declines below the nematode penetration threshold (18 C), but no long-term benefits should be expected. The temperature threshold may be an important consideration in managing M. incognita population densities in areas having lower winter soil temperatures than southern Georgia 
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