Resumo

RODRIGUEZ, Mayra G et al. Effect of neem (Azadirachta indica A. Juss) Waste on Meloidogyne spp. population in soil. Rev. Protección Veg. [online]. 2012, vol.27, n.3, pp.197-201. ISSN 1010-2752.

The effect of the waste from the industrial production of neem-based pesticides (Azadirachta indica A. Juss) originated in «Rosa Elena Simeón» factory in Güines (Mayabeque, Cuba) on Meloidogyne spp. population was evaluated, The experiment was carried out under semi-controlled conditions, using non sterilized soil with an initial level of Meloidogyne spp. of 0,5 juveniles-eggs.g of soil^-1. Eight treatments were set up; four of them were additionally inoculated with 5 juveniles-eggs.g of soil^-1 of Meloidogyen incognita (Kofoid and White) Chitwood. Tomato (Solanum lycopersicom L. var. Campbell 28) was used as host. Three doses of the waste (138,47g.pot^-1, 60,288 g.pot^-1 and 40,19 g.pot¹; -equivalent to 4, 3 and 2 kg.m^2-1 respectively) were applied. After fifty days, root knot galling index (GI) (0 to 5 grades), stem length and fresh weight of roots were evaluated. The highest populations appeared in the control treatment (without neem) (GI=5), which differed significantly from the treatments with the waste, where the best behavior was observed with 138,47 g.pot^-1 (equivalent to 4 kg.m^2-1) with a GI of 2,4. The results showed the potential of this waste for the management of plant parasitic nematodes and the need for studies on the effect upon the plants and the physical-chemical properties and biota of soils.

Palavras-chave : neem; waste; biodesinfection.

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