Abstract

SALVIO, Carla; MANETTI, Pablo Luis; CLEMENTE, Natalia Liliana  and  LOPEZ, Alicia Noemí. Effects of Carbaryl and Metaldehyde on Armadillidium vulgare (Crustacea: Isopoda) and Milax gagates (Mollusca: Pulmonata) in Soybean Under No-tillage. Agrociencia Uruguay [online]. 2014, vol.18, n.2, pp.82-89. ISSN 1510-0839.

The aim was to evaluate the control efficacy and dose of Metaldehyde 4 % + Carbaryl 8 % (2, 4 y 6 kg ha-1), Carbaryl 8 %, and Metaldehyde 4 % y 5 % (2 y 4 kg ha-1) baits on Armadillidium vulgare and Milax gagates, and to determine the number of plants and yield in soybean. The design was a randomized complete block with three replications. We evaluated the number of A. vulgare and M. gagates alive 3, 7, 10 and 16 days after application of bait (DAA), number of plants m-2, and yield (kg ha-1). The number of A. vulgare was lower with Metaldehyde 4 % + Carbaryl 8 % and with baits based on Carbaryl 8 % compared to the control at 3, 7, 10 and 16 DAA (c2 ptrat <0.05). At 3 DDA, the number of M. gagates decreased with Metaldehyde 4 % + Carbaryl 8 % and with the molluscicides in relation to the control (c2 ptrat =0.0806). The number of plants m-2 differed between treatments (c2 ptrat = 0.0003), and a higher number was obtained with the baits application than with the control. Yield showed the effect of treatments (c2 ptrat = 0.0188), however, only the 2 kg ha-1 Carbaryl 8 % dose was different from the control. It was concluded that the control efficacy of Metaldehyde+Carbaryl baits was similar to the one obtained by crustacicides formulated with Carbaryl on A. vulgare, and to molluscicides with Metaldehyde on M. gagates. Applying baits increased the number of plants

Keywords : WOODLICES; SLUGS; TOXIC BAITS; NO TILLAGE.

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