How to prepare hives for the next harvest?
By Heber Luiz Pereira, beekeeper, doctor in zootechnics, consultant for HP Agroconsultoria and Colmeia Viva, a Sindiveg program
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Brazil plays a leading role in global food cultivation, and soybean cultivation is undoubtedly the flagship of Brazilian agribusiness. With an estimated production of 122 million tons and a cultivated area that exceeds 40 million hectares, it is natural that care for crop health constitutes a central theme that mobilizes the efforts of producers and researchers across the country, especially in the face of of the impacts that the occurrence of diseases usually cause to the sector.
Among the pathogens that can reduce the productive potential of soybean crops, Asian rust represents one of the main threats. Caused by the fungus Phakopsora pachyrhizi, the disease, which spreads easily, can be found in all soybean-producing regions in Brazil, and the extent of its damage can compromise up to 90% of the volume of cultivation.
Other common pathogens include target spot (Corynespora cassiicola) and cercospora leaf blight (CFC), caused by fungi of the genus Cercospora. The increase that has been observed in the occurrence of these cases is related to several factors, such as the fact that they are also transmitted by seeds, survive in crop residues and, in some cases, affect crops that are part of the production system, such as cotton.
There are many strategies used by producers to keep crops safe from diseases and preserve their high profitability rates. Examples are sanitary voids, crop rotation, the search for more resistant cultivars and the use of products to help protect crops. In this regard, the criteria for selecting the most effective fungicide can be the decisive factor in obtaining a healthy and productive harvest. This is what research revealed that analyzed the importance of strobilurins (broad-spectrum foliar fungicides) in controlling soybean diseases.
To measure the effectiveness of the main fungicides used by soybean farmers, researchers from Corteva Agriscience and other institutions conducted a study that included the installation of 26 experiments in the 2021/22 harvest, observing the occurrence of leaf spots (Cercospora spp. and Corynespora cassiicola) and Asian rust (Phakopsora pachyrhizi), and how fungicides worked to control pathogens.
After surveying and analyzing the data, the researchers' conclusion was not surprising: Onmira™ active was identified as one of the two most effective fungicides in disease management, with a control level of around 51,1%. Among the group of strobilurins, Onmira™ active showed substantially greater effectiveness than all other fungicides, with management unmatched by any other product.
Results equivalent to this were published in network trials published by Embrapa, demonstrating once again the superiority of Onmira™ active in the most recent harvests compared to all other strobilurins.
More than validating a practice that is already recurrent among large soybean growers in Brazil, research like these helps to disseminate the effectiveness of Onmira™ active as an indispensable tool for controlling Asian rust and target spot, helping to develop soybean cultivation and promote higher productivity rates throughout the country.
Corteva, Inc. (NYSE: CTVA) is a publicly traded, 100% global agricultural company that combines industry-leading innovation, high customer engagement and operational execution to deliver profitable solutions to the world's most pressing agricultural challenges. Corteva generates advantageous market preference through its unique distribution strategy, along with its balanced and globally diverse mix of seeds, crop protection and digital services. With some of the most recognized brands in agriculture and a technology pipeline well-positioned to drive growth, the company is committed to maximizing farmer productivity while working with allies across the food system, delivering on its promise to enrich the lives of those who produce and those who consume, ensuring progress for future generations. More information is available at www.corteva.com.br.
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By Heber Luiz Pereira, beekeeper, doctor in zootechnics, consultant for HP Agroconsultoria and Colmeia Viva, a Sindiveg program
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