Does the direct tillage practice in soybean crops favour grasshopper populations (Orthoptera: Acrididae), in Benito Juarez county?

Does the direct tillage practice in soybean crops favour grasshopper populations (Orthoptera: Acrididae), in Benito Juarez county?

Considering the development of the soybean crops using direct tillage in Benito Juarez 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 spe...

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Veröffentlicht in:Revista de la Sociedad Entomológica Argentina 2012-12, Vol.71 (3-4), p.203-213
Hauptverfasser: Scuffi, D, Ricci, SE, Mariottini, Y, Torrusio, SE, De Wysiecki, ML
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Acrididae
Dichroplus elongatus
Orthoptera
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creator Scuffi, D
Ricci, SE
Mariottini, Y
Torrusio, SE
De Wysiecki, ML
description Considering the development of the soybean crops using direct tillage in Benito Juarez 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 Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichropluspratensis Bruner and Scotussa lemniscata (Stal). The accumulated richness was similar (p> 0.05), along the different crops; 2.3 plus or minus 0.19 species were registered in soybean crops first seedtime with direct tillage, 1.45 plus or minus 0.15 species in soybean with conventional tillage and 2.25 plus or minus 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.Original Abstract: Considerando el desarrollo del cultivo de soja en siembra directa en el partido de Benito Juarez, y que algunos autores sostienen que esta practica favorece los acridios, se evaluo la riqueza de especies y la abundancia en soja con siembra directa y convencional. Se registraron siete especies (Aleuas lineatus Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichroplus pratensis Bruner y Scotussa lemniscata (Stal). 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 plus or minus 0.19 especies, en soja de primera con siembra convencional 1.45 plus or minus 0.15 especies y en soja de segunda con siembra directa 2.25 plus or minus 0.28 especies. Dichroplus elongatus fue la especie mas abundante en todos los cultivos y en todos los momentos. Las restantes presentaron baja abundancia y se registraron en algunos momentos. No existio diferencia (p> 0.05) en la abun
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Seven species were registered (Aleuas lineatus Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichropluspratensis Bruner and Scotussa lemniscata (Stal). The accumulated richness was similar (p&gt; 0.05), along the different crops; 2.3 plus or minus 0.19 species were registered in soybean crops first seedtime with direct tillage, 1.45 plus or minus 0.15 species in soybean with conventional tillage and 2.25 plus or minus 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&gt; 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.Original Abstract: Considerando el desarrollo del cultivo de soja en siembra directa en el partido de Benito Juarez, y que algunos autores sostienen que esta practica favorece los acridios, se evaluo la riqueza de especies y la abundancia en soja con siembra directa y convencional. Se registraron siete especies (Aleuas lineatus Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichroplus pratensis Bruner y Scotussa lemniscata (Stal). La riqueza de especies acumulada en los diferentes cultivos fue similar (p&gt; 0.05). En soja de primera con siembra directa, se registraron 2.3 plus or minus 0.19 especies, en soja de primera con siembra convencional 1.45 plus or minus 0.15 especies y en soja de segunda con siembra directa 2.25 plus or minus 0.28 especies. Dichroplus elongatus fue la especie mas abundante en todos los cultivos y en todos los momentos. Las restantes presentaron baja abundancia y se registraron en algunos momentos. No existio diferencia (p&gt; 0.05) en la abundancia de tucuras entre los cultivos y en las diferentes fechas de muestreo. La baja riqueza de especies registrada estaria relacionada con la baja diversidad vegetal de los cultivos. 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Seven species were registered (Aleuas lineatus Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichropluspratensis Bruner and Scotussa lemniscata (Stal). The accumulated richness was similar (p&gt; 0.05), along the different crops; 2.3 plus or minus 0.19 species were registered in soybean crops first seedtime with direct tillage, 1.45 plus or minus 0.15 species in soybean with conventional tillage and 2.25 plus or minus 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&gt; 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.Original Abstract: Considerando el desarrollo del cultivo de soja en siembra directa en el partido de Benito Juarez, y que algunos autores sostienen que esta practica favorece los acridios, se evaluo la riqueza de especies y la abundancia en soja con siembra directa y convencional. Se registraron siete especies (Aleuas lineatus Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichroplus pratensis Bruner y Scotussa lemniscata (Stal). La riqueza de especies acumulada en los diferentes cultivos fue similar (p&gt; 0.05). En soja de primera con siembra directa, se registraron 2.3 plus or minus 0.19 especies, en soja de primera con siembra convencional 1.45 plus or minus 0.15 especies y en soja de segunda con siembra directa 2.25 plus or minus 0.28 especies. Dichroplus elongatus fue la especie mas abundante en todos los cultivos y en todos los momentos. Las restantes presentaron baja abundancia y se registraron en algunos momentos. No existio diferencia (p&gt; 0.05) en la abundancia de tucuras entre los cultivos y en las diferentes fechas de muestreo. La baja riqueza de especies registrada estaria relacionada con la baja diversidad vegetal de los cultivos. 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Seven species were registered (Aleuas lineatus Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichropluspratensis Bruner and Scotussa lemniscata (Stal). The accumulated richness was similar (p&gt; 0.05), along the different crops; 2.3 plus or minus 0.19 species were registered in soybean crops first seedtime with direct tillage, 1.45 plus or minus 0.15 species in soybean with conventional tillage and 2.25 plus or minus 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&gt; 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.Original Abstract: Considerando el desarrollo del cultivo de soja en siembra directa en el partido de Benito Juarez, y que algunos autores sostienen que esta practica favorece los acridios, se evaluo la riqueza de especies y la abundancia en soja con siembra directa y convencional. Se registraron siete especies (Aleuas lineatus Stal, Covasacris pallidinota (Bruner), Baeacris pseudopunctulatus (Ronderos), Dichroplus elongatus Giglio-Tos, Dichroplus maculipennis (Blanchard), Dichroplus pratensis Bruner y Scotussa lemniscata (Stal). La riqueza de especies acumulada en los diferentes cultivos fue similar (p&gt; 0.05). En soja de primera con siembra directa, se registraron 2.3 plus or minus 0.19 especies, en soja de primera con siembra convencional 1.45 plus or minus 0.15 especies y en soja de segunda con siembra directa 2.25 plus or minus 0.28 especies. Dichroplus elongatus fue la especie mas abundante en todos los cultivos y en todos los momentos. Las restantes presentaron baja abundancia y se registraron en algunos momentos. No existio diferencia (p&gt; 0.05) en la abundancia de tucuras entre los cultivos y en las diferentes fechas de muestreo. La baja riqueza de especies registrada estaria relacionada con la baja diversidad vegetal de los cultivos. Este estudio no mostro diferencias en la abundancia y riqueza de especies de acuerdo a la labranza utilizada.</abstract></addata></record>
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subjects Acrididae
Dichroplus elongatus
Orthoptera
title Does the direct tillage practice in soybean crops favour grasshopper populations (Orthoptera: Acrididae), in Benito Juarez county?
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