Nematropica (1999) 29, 153-170

D. Sotomayor, L.H. Allen, Z. Chen, D.W. Dickson and T. Hewlett (1999)
Anaerobic soil management practices and solarization for nematode control in Florida
Nematropica 29 (2), 153-170
Abstract: Combinations of flooding, solarization, and amending soil with yard waste compost (YWC) treatments were evaluated for control of root-knot nematodes (Meloidogyne arenaria). Experiments were conducted at Gainesville, Florida for 12-wk periods in the summer of 1996 and 1997 in mesocosms containing an Arredondo fine-sand. Flooding soil induced anaerobic conditions with soil redox potentials near -200 mV in both years. Flooding decreased soil root-knot nematode populations in the order of continuous < intermittent < non-flooded with values (J2/100cm³) of 9, 10, and 36 in 1996, and of 5, 23, and 212 in 1997, respectively. The number of galls found in tomato (Lycopersicon esculentum c.v. Rutgers) roots as a result of both intermittent and continuous flooding in both years were < 1. Endogenous soil populations of ring (Criconemella spp.) and stubby-root (Paratrichodorus spp.) nematodes were also reduced by flooding. Average daily maximum soil temperatures in solarized plots were in the order of. non-flooded with compost > flooded continuously > and non-flooded soil treatments in 1996 and non-flooded with compost > non-flooded. soil > flooded continuously in 1997. In 1996, solarization reduced root knot nematode numbers 83% in non flooded plots but did not reduce galling. Combinations of flooding and solarization also reduced root-knot nematode numbers in non-amended plots but galling incidence was not significantly different from the control. In 1997, solarization alone or in combination with other treatments effectively reduced soil root-knot nematode numbers. Root-knot, ring and stubby root. nematode populations increased in soil amended with YWC and following rice (Oryza sativa L. cv. Lemont) grown during the flooding period. Combinations of continuous flooding and solarization during the warmest days of the year deserve further study as tools for nematode control under field conditions.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Meloidogyne arenaria	Tomato (Solanum lycopersicum)	U.S.A. (SE)