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ID: <

10670/1.vkil2q

>

·

DOI: <

10.26226/morressier.5d5fdb2eea7c83e515cbfd0e

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Control of Hypsipyla grandella Zéller larvae with biocidal extracts

Abstract

In Peru00fa there is a high diversity of native biocidal species introduced with insecticide potential for pest and disease control in productive systems, with asu00ed, the objective of this work was to evaluate the effect of dosage of biocides extracts (Routa de centiolens-RG.; Azadirachta indica-AI; Simarouba amara-SA; Tagetes erecta-TE) in Hypsipyla grandella Zu00e9ller larvae control. The experiment was driven by a Diseu00f1° Completely to the Azar (DCA), in subdivided plot scheme, with 5 treatments, 3 repetitions and 10 foliar discs of Swietenia macrophylla per experimental unit. The plots were made up of 5 concentrations (T1: 0 %; T2: 10 %; T3: 20 %; T4: 30 %; and T5: 40 %) for each biocidal extract and the sub-parcels were made up of 4 assessment strokes 00f3n (6h, 12h, 18h and 24h) during du00eda. The variables assessed were: foliares-CDF disc consumption (%), increase in foliar-ICF consumption (%), mortality u2013 ML (%) and larval-AL activity (%). The extracts that produced the best significant effects (Pu22640.05) were RG and SA with 48.67 % and 49.14 % respectively foliar consumption, 13.3 % and 10 % dead larvae and less larval activity. Thus, lower concentrations were less efficient in controlling larvae. It is concluded that the extracts of RG and SA acted as insecticide in the control of H.grandella larvae and the increased mortality of larvae ocurriu00f3 at the high concentrations of mayoru00eda of the extracts.

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