New technologies in soybeans
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What are the differences between Enlist and Intacta Xtend soybeans? Intacta RR2 soybeans (in addition to glyphosate resistance, it has Bt proteins to control the main soybean caterpillars - Anticarsia, Pseudoplusia includens, apple caterpillar and axilla borer). Well, the main change from Intacta RR2 soybeans to the Intacta2 Xtend® platform is tolerance to the dicamba herbicide (for example, Atectra herbicide) and two new Bt proteins that provide additional protection against two new caterpillars: Helicoverpa armigera and Spodoptera cosmioides. It is important to mention that the active ingredient herbicide dicamba has been around for several decades for pre-emergent use (60 days before planting conventional soybeans - not dicamba tolerant). Although it is not widely used due to the existence of other options, such as glyphosate itself, now that weeds are becoming more resistant to glyphosate (buva, caruru, corda de viola), and paraquat has been banned, new options such as Intacta2 Xtend® are welcome. But like everything in life, not everything is perfect. This is because Dicamba is a herbicide with volatility problems and if all precautionary measures are not taken (high spray volume, special nozzle - with a large droplet size, and careful wind speed), the producer will possibly have problems with product volatilization that can affect neighboring crops. It is important to mention that this technology has already been tested in Brazil, and Bayer is taking a series of preventive measures, so as not to burn the technology, so to speak, due to the major volatility problem of the molecule. It is important to mention that the US already has the Intacta Xtend flex technology, which in addition to resistance to dicamba, also provides resistance to glufosinate ammonium (Finale, for example), although these technologies have not yet been approved for use in the European Union and China. Another technology available is Corteva's Enlist. In addition to resistance to caterpillars, the Enlist technology allows the use of 2,4-D, glufosinate and glyphosate in soybeans. Well, when we receive a new technology, it comes to help, but that doesn't mean that it should always be used in every area. This is because if we do that, we will greatly increase the selection pressure and consequently reduce the useful life of the molecule. RR corn, for example, is a technology that most of the time doesn't need to be used. There are times when other options are even cheaper than glyphosate, if we consider that later this corn can be a management problem in soybeans. So, let's improve our knowledge about these new technologies so that we can adopt them with criteria and maintain the viability of the technology for a long time.
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