Emergence of suppression of root-knot nematodes in sweet potato cropping systems treated with Pasteuria penetrans
نویسندگان
چکیده
منابع مشابه
Modelling Movements of Root-knot Nematodes Meloidogyne spp. Juveniles when Encumbered with Spores of Pasteuria penetrans
A system for monitoring movement of the free-living second stage juveniles of root-knot nematodes (Meloidogyne spp.) using digital image analysis is described. The method is based on the analysis of video sequences of movement of individual random nematodes encumbered with or without Pasteuria penetrans endospores. Software packages were used to grab video images, to process images and to monit...
متن کاملPopulation Densities of Root-knot Nematodes following Corn and Sorghum in Cropping Systems
Densities of the root-knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood,were compared following summer crops of tropical corn (Zea mays L.) and sorghum (Sorghum bicolorL.) at several locations in north Florida. Densities of M. incognita remained low soil) following the sorghum cultivars DeKalb FS25E and DeKalh BR64 and the sorghum sudangrass (S. sudanense [Piper] Stapf) hybrid D...
متن کاملNematode numbers and crop yield in a fenamiphos-treated sweet corn-sweet potato-vetch cropping system.
Nematode population densities and yield of sweet corn and sweet potato as affected by the nematicide fenamiphos, in a sweet corn-sweet potato-vetch cropping system, were determined in a 5-year test (1981-85). Sweet potato was the best host of Meloidogyne incognita of these three crops. Fenamiphos 15G (6.7 kg a.i./ha) incorporated broadcast in the top 15 cm of the soil layer before planting of e...
متن کاملSpecific Gravity of Spores of Pasteuria penetrans and Extraction of Spore-filled Nematodes from Soil.
The specific gravity of spores of Pasteuria penetrans collected from Meloidogyne arenaria was found to be around 1.28. Increasing the sucrose concentration used for the extraction of Pratylenchus scribneri from a specific gravity of 1.14 to 1.26 led to the recovery of higher numbers of specimens filled with spores of Pasteuria sp. (P </= 0.05). The numbers of spore-filled specimens of Hoplolaim...
متن کاملReview of Pasteuria penetrans: Biology, Ecology, and Biological Control Potential.
Pasteuria penetrans is a mycelial, endospore-forming, bacterial parasite that has shown great potential as a biological control agent of root-knot nematodes. Considerable progress has been made during the last 10 years in understanding its biology and importance as an agent capable of effectively suppressing root-knot nematodes in field soil. The objective of this review is to summarize the cur...
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ژورنال
عنوان ژورنال: Japanese Journal of Nematology
سال: 2007
ISSN: 0919-6765,1882-3408
DOI: 10.3725/jjn.37.1