Nematropica (2002) 32, 113-124

F. Franco-Navarro, I. Cid del Prado-Vera, E. Zavaleta-Mejía and P. Sánchez-García (2002)
Aplicación de enmiendas orgánicas para el manejo de Nacobbus aberrans en tomate
[Application of organic amendments for the management of Nacobbus aberrans on tomato]
Nematropica 32 (2), 113-124
Abstract: The incorporation of cabbage residues (Brassica oleracea L. cv. capitata) and ricinus residues (Ricinus communis L.) to soil was tested for the management N. aberrans under greenhouse conditions. The number of galls was reduced significatively (α = 0.01) by the incorporation of cabbage 10 days before planting tomato (Lycopersicon esculentum Mill.); however, some plants died and plant growth was reduced as a consequence of a phytotoxic effect. In contrast, when the amendments were incorporated at planting, root galling was reduced in 36% and 54%, and in 21% and 46% with cabbage and ricinus residues at a dose of 1% and 2%, respectively. The height of the plant, dry weight of shoot and root increased in 20% and 25%, 57% and 65%, and 34% and 36% with cabbage, and in 16% and 21%, 55% and 55%, and 8% and 7% with ricinus at 1% and 2%, respectively. In a field naturally infested with N. aberrans, the incorporation of cabbage residues at different planting dates and doses was tested. When a dose of cabbage of 5.20 kg/m² was incorporated at planting tomato, the number of galls in roots was reduced in 72%, 53% and 29%, while the incorporation of 3.25 kg/m² one week before planting tomato reduced root galling in 66%, 50%, and 24% at 20, 40 and 60 days after planting, respectively. The incorporation of 5.20 and 3.25 kg/m² of cabbage close to the planting date increased root dry weight in 24% and 21%, and shoot dry weight increased in 41% and 32%, respectively. The total and commercial accumulated yield of tomato increased significantly (α = 0.01) in 62% and 61% with the incorporation of 5.20 kg/m² of cabbage at planting, and in 51% and 53% with the incorporation of 3.25 kg/m² of cabbage one week before planting, respectively, in comparison with the control without amendments.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Spanish)
Database assignments for author(s): Emma Zavaleta-Mejia

Research topic(s) for pests/diseases/weeds:
control - general
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nacobbus aberrans	Tomato (Solanum lycopersicum)	Mexico