Resumen

SILVA, Leonardo D. da; BLEICHER, Ervino  y  ARAUJO, Adriana C.. Efficiency of Azadirachtin against whitefly in melon crop in greenhouse and field conditions. Hortic. Bras. [online]. 2003, vol.21, n.2, pp. 198-201. ISSN 0102-0536.  http://dx.doi.org/10.1590/S0102-05362003000200015.

Melons are of great importance for exportation by the Brazilian northeast region, actually being threatened by the whitefly pest, which is only controlled by the use of the conventional chemical insecticides actually used in the crop. In this study a potential botanical insecticide containing 1% Azadirachtin was evaluated against Bemisia argentifolii on melon, under greenhouse and field conditions. A randomized complete block design was used in both cases, with four replicates. Evaluating nymphs in greenhouse and nymphs and adults in field, we observed an increase in mortality by increasing dosages. In field, efficiency was 67.83 and 70.13% for adults and 80.36 and 88.10% for nymphs using 4.0 and 8.0 ml/L of the commercial Azadirachtin formulation, respectively.

Palabras llave : Bemisia argentifolii; Cucumis melo; Azadirachta indica; botanical insecticide.