Damage Functions for Three Meloidogyne Species on Arachis hypogaea in Texas

The yield response of Florunner peanut to different initial population (Pi) densities of Meloidogyne arenaria, M. javanica, and an undescribed Meloidogyne species (isolate 93-13a) was determined in microplots in 1995 and 1996. Seven Pi's (0, 0.5, 1, 5, 10, 50, and 100 eggs and J2/500 cm(3) soil...

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Veröffentlicht in:Journal of nematology. - 1969. - 29(1997), 4 vom: 09. Dez., Seite 478-83
1. Verfasser: Abdel-Momen, S M (VerfasserIn)
Weitere Verfasser: Starr, J L
Format: Aufsatz
Sprache:English
Veröffentlicht: 1997
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Arachis hypogaea Meloidogyne arenaria Meloidogyne javanica Meloidogyne spp. damage function nematode peanut root-knot nematode
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245 1 0 |a Damage Functions for Three Meloidogyne Species on Arachis hypogaea in Texas 
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520 |a The yield response of Florunner peanut to different initial population (Pi) densities of Meloidogyne arenaria, M. javanica, and an undescribed Meloidogyne species (isolate 93-13a) was determined in microplots in 1995 and 1996. Seven Pi's (0, 0.5, 1, 5, 10, 50, and 100 eggs and J2/500 cm(3) soil) were used for each Meloidogyne species in both years. The three species reproduced abundantly on Florunner in both years. In 1995, mean reproduction differed among the three species; mean Rf values were 10,253 for isolate 93-13, 4,256 for M. arenaria, and 513 for M. javanica. In 1996, the reproduction of M. arenaria (mean Rf = 7,820) and isolate 93-13a (mean Rf = 7,506) were similar, and both had greater reproduction on peanut than did M. javanica (mean Rf = 2,325). All three nematode species caused root and pod galling, and a positive relationship was observed between Pi and the percentage of pods galled. Meloidogyne arenaria caused a higher percentage of pod galling than did M. javanica or isolate 93-13a. A negative linear relationship between log (Pi + 1) and pod yield was observed for all three nematode species each year. The yield response slopes were similar except for that of M. javanica, which was less negative than that of isolate 93-13a in 1995, and less negative than that of M. arenaria and isolate 93-13a in 1996 
650 4 |a Journal Article 
650 4 |a Arachis hypogaea 
650 4 |a Meloidogyne arenaria 
650 4 |a Meloidogyne javanica 
650 4 |a Meloidogyne spp. 
650 4 |a damage function 
650 4 |a nematode 
650 4 |a peanut 
650 4 |a root-knot nematode 
700 1 |a Starr, J L  |e verfasserin  |4 aut 
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952 |d 29  |j 1997  |e 4  |b 09  |c 12  |h 478-83