The efficacy of three metaldehyde pellets marketed in Argentina, on the control of Deroceras reticulatum (Müller) (Pulmonata: Stylommatophora)

Salvio, Carla; Faberi, A. J.; López, A.; Manetti, Pablo Luis; Clemente, Natalia Liliana

doi:10.5424/sjar/2008061-295

Cited by 10 publications

(18 citation statements)

References 18 publications

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“…The adoption of NT system in southeastern Buenos Aires Province increased some groups of organisms like slugs and pill bugs in some fields, which became pests in crops (Faberi et al, 2006;Clemente et al, 2008;Salvio et al, 2008;Faberi et al, 2009). In recent works Diovisalvi et al (2008) and Domínguez et al (2009) determined that there are slightly changes in some properties of the soil related to the soils sustainability between CT and NT.…”

Section: Discussionmentioning

confidence: 99%

Tillage system does not affect soil macrofauna in southeastern Buenos Aires province, Argentina

Manetti

López

Clemente

et al. 2010

Span. j. agric. res.

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Soil degradation increased incessantly in the Pampas region of Argentina, due to the intensification of agricultural activities, when carried out with conventional tillage (CT) systems. No-tillage system was adopted as conservation practices by the farmers. The objectives of this study were: a) to determine the macrofauna taxa and their relative abundance under CT and NT in two different seasons; and b) to evaluate soil tillage and seasonal effects on the density of the main macrofauna taxa. The study was conducted from 2002 to 2004 in 46 production farms, in Balcarce, Argentina. Ten soil monoliths (25.2 cm side; 30 cm depth) ramdomly directed field at July-August; and at OctoberNovember to determine the number of individuals of macrofauna and Enchytraeidae. Soil macrofauna density did not differ between tillage systems. Oligochaeta Megadrilli density was generally not affected by the tillage system (P > 0.05) except in 2004 when it was greater under CT in July-August (P = 0.0002). Chilopoda density was greater in soils under NT, with significant differences in 2002 in October-November (P = 0.0070). In July-August of 2003 it was higher in CT (P = 0.0109). Diplopoda were more abundant only under NT in July-August 2004 (P = 0.0010). In July-August a significantly (P < 0.05) higher density of Enchytraeidae was found in CT than NT fields. No differences were observed in the taxonomic composition and the relative abundance of the macrofauna when comparing CT and NT. It can be then concluded that in the study region tillage systems affected slightly soil macrofauna and significantly Enchytraeidae.Additional key words: abundance, conventional tillage, no-tillage, soil invertebrates. ResumenEl sistema de labranza no afecta a la macrofauna en el sudeste de la provincia de Buenos Aires, ArgentinaEn la región pampeana argentina se ha producido una creciente degradación del suelo debido a la intensificación de las actividades agrícolas llevadas a cabo con sistemas de labranza convencionales (LC). Los agricultores, como práctica conservacionista, han adoptado la siembra directa (SD). Los objetivos de este estudio fueron determinar los taxa de la macrofauna y su abundancia relativa bajo LC y SD en dos estaciones diferentes y evaluar los efectos de los sistemas de labranza y estaciones sobre la densidad de los principales taxa de la macrofauna. El estudio fue llevado a cabo desde 2002 hasta 2004 en 46 lotes de producción en Balcarce, Argentina. En cada lote se tomaron diez muestras de suelo al azar (de 25,2 cm de ancho y 30 cm de profundidad) en julio-agosto y octubre-noviembre para determinar el número de individuos de la macrofauna y de los Enchytraeidae. La densidad de la macrofauna no difirió entre sistemas de labranza. La densidad de Oligochaeta Megadrilli no fue afectada por el sistema de labranza (P > 0,05), excepto en 2004 cuando fue mayor bajo LC en julio-agosto (P = 0,0002). La densidad de Chilopoda fue mayor bajo SD, aunque solo se observaron diferencias significativas en octubre-noviembre de 2002 (P = 0,007...

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Section: Discussionmentioning

confidence: 99%

Tillage system does not affect soil macrofauna in southeastern Buenos Aires province, Argentina

Manetti

López

Clemente

et al. 2010

Span. j. agric. res.

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“…Damages are similar to the common no tillage pest, slugs. Glen & Moens (2002), Moens & Glen (2002), Faberi et al (2006 and Salvio et al (2008) observed that slug damage to plants is caused at sowing and immediately after germination. Similar damages occur with A. vulgare, it feeds on seeds and seedlings, causing a reduction in plant density.…”

Section: Introductionmentioning

confidence: 99%

Importance of diet in the growth, survivorship and reproduction of the no-tillage pest Armadillidium vulgare (Crustacea: Isopoda)

Faberi

López

Clemente

et al. 2011

Rev. chil. hist. nat.

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Importance of diet in the growth, survivorship and reproduction of the no-tillage pest Armadillidium vulgare (Crustacea: Isopoda)Importancia de la dieta en el crecimiento, la supervivencia y la reproducción de Armadillidium vulgare (Crustacea: Isopoda) plaga en siembra directa ABSTRACTThe studies of Armadillidium vulgare as pest are virtually null worldwide. However under no-tillage systems this species has found an adequate environment for its development and it has become an important pest in some crops in Argentina. It has been shown that the composition of vegetables affects the isopods biology. Our hypothesis was that soybean leaf litter has high nutritive value which allows A. vulgare to grow faster, survive longer, and have higher fecundity favoring the population increase and turning it into a crop pest. Growth and survivorship of juveniles and adults, egg incubation period, offspring number per female and offspring mean body weight were determined in individuals fed with leaf litter of soybean, sunfl ower, wheat and pasture. The growth rate coeffi cient, k, in juveniles was higher for soybean, intermediate for pasture and lower for sunfl ower. Adult growth was faster under the soybean diet. Survivorship under soybean and pasture was longer than under sunfl ower and wheat in both juveniles and adults. The reproductive parameters were similar in all diets, food did not generate any change in the reproductive aspects of A. vulgare. Results of the present study represent a source of information about the A. vulgare biology under different diets of agricultural origin to establish the basis for Integrated Management of this species as pest. Under soybean litter provision A. vulgare found the best conditions for faster growth, longer survival and relatively higher fecundity. In fi elds with soybean as preceding crop or in systems with high frequency of soybean in the crop rotation a more abundant population of A. vulgare would be found as well as with larger individuals which could cause more damage to the following crop in the rotation.Key words: crop leaf litter, food quality, herbivore, N content. RESUMENLos estudios sobre Armadillidium vulgare como plaga son virtualmente nulos a nivel mundial. Sin embargo, en los sistemas bajo siembra directa esta especie ha encontrado un ambiente adecuado para su desarrollo y se ha convertido en una plaga importante en algunos cultivos en Argentina. Se ha demostrado que la composición de los vegetales afecta la biología de los isópodos. Nuestra hipótesis fue que los residuos vegetales de la soja tienen un valor nutritivo alto lo cual permite a A. vulgare crecer más rápido, sobrevivir más y tener una fecundidad elevada favoreciendo el incremento poblacional y convirtiéndolo en plaga de cultivos. El crecimiento y la reproducción de juveniles y adultos, el período de incubación, el número de crías por hembra y el peso medio de las crías fueron determinados en individuos alimentados con residuos de soja, girasol, trigo y pastura. El coefi ciente de la tasa de crecimiento, k...

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“…Such protective behaviors can prevent free imbibition of molluscicidal compounds into the inner body cavities. On the other hand, molluscicidal baits act as stomach poisons [ 49 ]. Hence damage to the gastric epithelium is the main mechanism of action [ 14 , 50 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Achyranthes aspera (L.) as a Molluscicidal Bait Formulation against Fresh Water Snail Biomphalaria pfeifferi

Mandefro

Mereta

Ambelu

2018

Evidence-Based Complementary and Alternative Medicine

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Molluscicidal plant products have interesting attributes of environmental friendliness and accessibility to local communities. Their bait formulations are more economical and target specific as they are applied only to the snail-infested sections of the water habitat. Their active ingestion by target snails could also increase gastric concentrations and enhance effectiveness. This study aimed to evaluate the comparative effectiveness of Achyranthes aspera (A. aspera) leaf hydroethanolic extract in bait and immersion applications. Serial dilutions of the extract in water for immersion, and in snail food pellets for bait test, were set. Adult Biomphalaria pfeifferi snails exposed to the bioassays for 24 hours and data were analyzed using probit model. The plant showed molluscicidal activity in both methods. The respective LC50 and LC90 doses were 20.37 and 46.84 ppm in the immersion and 3.10 and 11.08 ppm in the bait. The more efficient bait method reduced the LC50 by 6.57 and the LC90 by 4.23 times. This finding provides a strong foundation for the molluscicidal potential of A. aspera. It is applicable and possibly more effective if formulated into those commercially available snail food pellets or flakes. However, selection and optimization of suitable baits is a crucial step for maximum output.

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The efficacy of three metaldehyde pellets marketed in Argentina, on the control of Deroceras reticulatum (Müller) (Pulmonata: Stylommatophora)

Cited by 10 publications

References 18 publications

Tillage system does not affect soil macrofauna in southeastern Buenos Aires province, Argentina

Tillage system does not affect soil macrofauna in southeastern Buenos Aires province, Argentina

Importance of diet in the growth, survivorship and reproduction of the no-tillage pest Armadillidium vulgare (Crustacea: Isopoda)

Efficacy of Achyranthes aspera (L.) as a Molluscicidal Bait Formulation against Fresh Water Snail Biomphalaria pfeifferi

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