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- Title
MODOS DE PREPARO DE EXTRATOS VEGETAIS SOBRE MELOIDOGYNE JAVANICA NO TOMATEIRO.
- Authors
De Almeida, F. A.; Petter, F. A.; Siqueira, V. C.; Neto, F. Alcântara; Alves, A. U.; Leite, M. L. T.
- Abstract
The objective of this study was to evaluate the effect of nematicide or nematostatic leaf extracts of nettle (Fleurva aestuans), neem (Azadirachta indica), castor bean (Ricinus communis) and cassava (Manihot esculenta) by different modes of preparation. The tomato seedlings were inoculated with roots in the region of a suspension containing 5,000 eggs/juveniles of Meloidogyne javanica, and after 72 hours was added to 100 ml of soil extracts. At 50 days, plant height, stem diameter, fresh and dry matter of the aerial part, fresh and dry mater of root system, the number of galls on the roots and the number of juveniles in the soil were measured. Extracts of castor and neem increase in the height plant of 90% and 85% respectively . The extracts of cassava prepared by infusion provided the largest reduction in the number of juveniles. Neem extracts prepared by cooking, nettle infusion and castor bean powder induced the greatest reductions in the number of galls, corresponding to 92.1, 91.6 and 91.3% respectively. The use of plant extracts shows potential biocide on the nematodes in galls in tomato crop.
- Subjects
BIOLOGICAL control of tomato diseases &; pests; JAVANESE root-knot nematode; PHYSIOLOGICAL effects of nematocides; NETTLES; NEEM insecticide; NEMATODE control
- Publication
Nematropica, 2012, Vol 42, Issue 1, p9
- ISSN
0099-5444
- Publication type
Article