Influence of Environmental Factors on the Hatch and Survival of Meloidogyne incognita

The influence of soil temperature and moisture on Meloidogyne incognita (Kofoid and White) Chitwood was examined in relation to hatching and survival of second-stage juveniles (J2). Nematodes were cultured on cotton (Gossypium hirsutum L. cv. Acala SJ2) under field conditions to provide populations...

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Veröffentlicht in:Journal of nematology. - 1969. - 21(1989), 3 vom: 16. Juli, Seite 328-34
1. Verfasser: Goodell, P B (VerfasserIn)
Weitere Verfasser: Ferris, H
Format: Aufsatz
Sprache:English
Veröffentlicht: 1989
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Gossypium hirsutum Meloidogyne incognita cotton cultural management hatch soil moisture soil temperature survival
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520 |a The influence of soil temperature and moisture on Meloidogyne incognita (Kofoid and White) Chitwood was examined in relation to hatching and survival of second-stage juveniles (J2). Nematodes were cultured on cotton (Gossypium hirsutum L. cv. Acala SJ2) under field conditions to provide populations similar to those found in the field in late autumn. Egg masses were placed in a temperature range (9-12 C and 21 C), and hatch was measured over a period equivalent to 20 degree days > 10 C (DD10). Hatch occurred below the reported 18 C activity threshold, was restricted below 12 C, and was inhibited below 10 C. Soil moisture influence on hatch was measured by placing egg masses in Hesperia sandy loam and subjecting them to suction pressures ranging from -1.1 bars to -4 .5 bars. Suction potentials of less than -2 bars reduced hatch and less than -3 bars inhibited hatch. J2 were placed in sandy loam soil with soil moisture near field capacity, and their motility was measured over a period of 500 DD10. In the absence of a host, more than 90% of J2 became nonmotile over this period 
650 4 |a Journal Article 
650 4 |a Gossypium hirsutum 
650 4 |a Meloidogyne incognita 
650 4 |a cotton 
650 4 |a cultural management 
650 4 |a hatch 
650 4 |a soil moisture 
650 4 |a soil temperature 
650 4 |a survival 
700 1 |a Ferris, H  |e verfasserin  |4 aut 
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