Weeds are responsible for 30% of production losses

On a global scale, weeds are one of the main restrictive factors in soybean production, accounting for 20% to 30% of losses, due to competition with agricultural crops for water, light and nutrients, as well as loss of quality. harvested grains and for harboring pests that will cause damage to the crop in the future. Among the five most problematic plants in the world is chicken foot grass, due to its rapid growth, aggressive root system and high seed production.

According to Aline Deon, a researcher at Proteplan, crow's feet and other invasive plants must be controlled with correct management, which involves using tools to combat weeds very efficiently and effectively, thus protecting the productive potential of cultivars. of soy.

For this phase of farming that precedes harvest, Aline advises that rural producers and their team pay attention to the correct time to carry out desiccation so that the harvest does not have losses in productivity and the quality of the harvested grains. “You should be cautious, especially if you are using cultivars with an indeterminate habit, as maturation occurs unevenly in these materials. It is also important to plan for the implementation of off-season corn in the clean area.”

The agronomist explains that the research results highlight the importance of sequential applications in the management of perennial plants and, also, the rotation of action mechanisms, in order to avoid the selection of resistant biotypes and, thus, have more tools in the management of weed plants. “The use of pre-emergents in the system also proved to be important for controlling invasive plants, standardizing and delaying the emergence flow, delivering smaller plants for application in powders.”

This information was presented by researcher Aline Deon at Estação Herbologia during Open Sky Soja 2021, held from January 27th to 29th in Sorriso, north of Mato Grosso, for a limited audience and with an appointment to visit Proteplan's research trials.

In the 2020/2021 soybean harvest, the researcher developed tests with 667 treatments as alternatives for weed management. Of this total, 46 results were presented at the event in Sorriso. Regarding cultivar tests, herbicide phytotoxicity tests were carried out for post-emergence application of soybeans, as well as contamination testing in herbicide tanks, used in pre-sowing and applied post-emergence. The applications were carried out on 32 representative cultivars in MT, and the results show that some cultivars are more sensitive to phytotoxicity than others. However, researchers are still awaiting the productivity results of these materials.

During the event, which was held in accordance with the safety and protection protocols required by the WHO, participants were able to see in situ the experiments on pre-planting desiccation and management of difficult-to-control weeds, in post and pre-emergence, conducted under high natural infestation with bushy plants.

Next event – Campo Verde will be the next city in Mato Grosso to host Open Sky Soja 2021 held by Proteplan on February 04th and 05th. Registration is free, limited and can be done via the link:

https://proteplan2.websiteseguro.com/eventos/e/6001a4988e25f