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Unlocking the secrets of phosphorus in soil management

 Just like humans, plants need nutrients to survive and grow, and many of these nutrients are important compounds found in soil. A University of Saskatchewan (USask) researcher is exploring how phosphorus, an important nutrient for humans and plants, reacts with mineral compounds and how these reactions can impact how well phosphorus is used in soil.

Although phosphorus is required for the growth of plants, USask master’s student Catherine Chavez said it is important to use it efficiently in soil because there is only a finite amount to go around.

“Phosphorus is a required nutrient for all living organisms, and its availability is controlled by adsorption processes,” said Chavez.

Adsorption describes a process where particles of one substance adhere to the surface of another. Her research project is exploring how a wide range of phosphorus compounds react with iron oxide minerals.

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Wisconsin Corn and Soybean Weed Management Updates and Considerations for 2026 and Beyond

Video: Wisconsin Corn and Soybean Weed Management Updates and Considerations for 2026 and Beyond


Dr. Rodrigo Werle, associate professor and extension weed scientist, UW–Madison, shares the latest updates and future considerations for corn and soybean weed management in Wisconsin. This presentation covers herbicide resistance trends in waterhemp, including newly confirmed cases of HPPD and S-metolachlor resistance, and emphasizes the importance of residual herbicides and strategic tank mixes for consistent control. Rodrigo also introduces upcoming technologies like Vyconic soybeans and new herbicide products, discusses integrated weed management strategies such as planting green with cover crops, and highlights practical recommendations for 2026 and beyond.

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