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      ¿La práctica de la siembra directa en cultivos de soja favorece las poblaciones de acridios (Orthoptera: Acrididae) en el partido de Benito Juárez? Translated title: Does the direct tillage practice in soybean crops favour grasshopper populations (Orthoptera: Acrididae), in Benito Juárez county?

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          Abstract

          Considerando el desarrollo del cultivo de soja en siembra directa en el partido de Benito Juárez, y que algunos autores sostienen que esta práctica favorece los acridios, se evaluó la riqueza de especies y la abundancia en soja con siembra directa y convencional. Se registraron siete especies (Aleuas lineatus Stål, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichroplus pratensis Bruner y Scotussa lemniscata (Stål). La riqueza de especies acumulada en los diferentes cultivos fue similar (p> 0,05). En soja de primera con siembra directa, se registraron 2,3 ± 0,19 especies, en soja de primera con siembra convencional 1,45 ± 0,15 especies y en soja de segunda con siembra directa 2,25 ± 0,28 especies. Dichroplus elongatus fue la especie más abundante en todos los cultivos y en todos los momentos. Las restantes presentaron baja abundancia y se registraron en algunos momentos. No existió diferencia (p> 0,05) en la abundancia de tucuras entre los cultivos y en las diferentes fechas de muestreo. La baja riqueza de especies registrada estaría relacionada con la baja diversidad vegetal de los cultivos. Este estudio no mostró diferencias en la abundancia y riqueza de especies de acuerdo a la labranza utilizada.

          Translated abstract

          Considering the development of the soybean crops using direct tillage in Benito Juárez county, and taking into account that for some authors this practice favours the grasshopper populations, the abundance and species richness in soybean with direct and conventional tillage were evaluated. Seven species were registered (Aleuas lineatus Stål, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichroplus pratensis Bruner and Scotussa lemniscata (Stål). The accumulated richness was similar (p> 0.05), along the different crops; 2.3 ± 0.19 species were registered in soybean crops first seedtime with direct tillage, 1.45 ± 0.15 species in soybean with conventional tillage and 2.25 ± 0.28 species in soybean second seedtime with direct tillage. Dichroplus elongatus was the most abundant grasshopper in all crops and at every sampling moment. The remaining species had low abundance and were recorded in some samples. There was no difference (p> 0.05), in the grasshoppers abundance in the different soybean crops at the different sampling times. The low grasshopper species richness registered could be related to the low vegetal diversity of the crops. The results of this study showed no differences in abundance and species richness among different systems of tillage of the soybeans crops.

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          Sustainable Management of Insect Herbivores in Grassland Ecosystems: New Perspectives in Grasshopper Control

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            Grasshopper (Insecta: Orthoptera: Acrididae) assemblages of tallgrass prairie: influences of fire frequency, topography, and vegetation

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              Fire as a Natural Disturbance to Grasshopper Assemblages of Tallgrass Prairie

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rsea
                Revista de la Sociedad Entomológica Argentina
                Rev. Soc. Entomol. Argent.
                Sociedad Entomológica Argentina (La Plata )
                1851-7471
                December 2012
                : 71
                : 3-4
                : 203-213
                Affiliations
                [1 ] Universidad Nacional del Centro Argentina
                [2 ] campus Universidad Nacional del Centro Argentina
                [3 ] Universidad Nacional de La Plata Argentina
                [4 ] Universidad Nacional de La Plata Argentina
                Article
                S0373-56802012000200004
                cd2f0496-066d-4115-8750-d1dd864fecd6

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Argentina

                Self URI (journal page): http://www.scielo.org.ar/scielo.php?script=sci_serial&pid=0373-5680&lng=en
                Categories
                ENTOMOLOGY

                Entomology
                Grasshoppers,Species richness,Abundance,Glycine max,Tillage systems,Tucuras,Riqueza de especies,Abundancia,Sistemas de labranza

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