Resumo

FUSE, C.B et al. Evaluación de la actividad insecticida de tierras de diatomeas de yacimientos argentinos. RIA. Rev. investig. agropecu. [online]. 2013, vol.39, n.2, pp.207-213. ISSN 1669-2314.

The use of diatomaceous earth (DE) as insecticide of low health risk to humans and the environment is currently registered in many countries for use in stored grain protection. The insecticide efficacy of DE obtained from local deposits was evaluated in bioassays using stored product coleopteran pests. These information was compared to selected DE physicochemical parameters (tapped density, test weight reduction, grain adherence, and pH) already proposed as predictive parameters to evaluate insecticide efficacy (Korunic, 1997). The results obtained by both methods agreed, and depended on the DE deposit and the species under study. The methodology here described is simple and effective to achieve a preliminary evaluation of the insecticide efficacy of these different diatomite deposits. This study will contribute to estimate the economic viability of the potential utilization of different DE fields in Argentina.

Palavras-chave : Diatomaceous earth; Natural pest control; Stored product insect pests.

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