Publications by authors named "Davi de S Fernandes"
Article Synopsis
- The soybean bud borer in Brazil, initially identified as Crocidosema aporema, has seen recent outbreaks, but its identification and geographic history remain unclear.
- A study involving molecular and morphological analysis revealed that 80 out of 90 collected samples were likely a different species in the Crocidosema genus, indicating that they may not be C. aporema.
- The population growth of the soybean bud borer aligns with the expansion of soybean farming in Brazil, suggesting that increased agriculture may have contributed to the pest's rising numbers.
Widespread adoption of MON 87701 × MON 89788 soybean, expressing Cry1Ac Bt protein and glyphosate tolerance, has been observed in Brazil. A proactive program was implemented to phenotypically and genotypically monitor Cry1Ac resistance in Chrysodeixis includens (Walker). Recent cases of unexpected injury in MON 87701 × MON 89788 soybean were investigated and a large-scale sampling of larvae on commercial soybean fields was performed to assess the efficacy of this technology and the distribution of lepidopteran pests in Brazil.
View Article and Find Full Text PDFThe soybean technology MON 87701 × MON 89788, expressing Cry1Ac and conferring tolerance to glyphosate, has been widely adopted in Brazil since 2013. However, pest shifts or resistance evolution could reduce the benefits of this technology. To assess Cry1Ac soybean performance and understand the composition of lepidopteran pest species attacking soybeans, we implemented large-scale sampling of larvae on commercial soybean fields during the 2019 and 2020 crop seasons to compare with data collected prior to the introduction of Cry1Ac soybeans.
View Article and Find Full Text PDF