Yellow soybeans in northern Ohio have raised concerns among farmers, and Field Agronomist Mike Hannewald from Becks sheds light on the multiple stress factors contributing to this issue:
- Herbicide Injury: Soybean plants may show stress if sprayed with herbicides. Herbicide metabolism can be hindered by other stressors in the field, leading to observable symptoms, especially in the end rows where spray overlapping occurred.
- Manganese Deficiency: Yellowing between the veins of soybean leaves could indicate a deficiency in manganese. Treating this condition is possible with a foliar fertilizer application containing manganese.
- Fusarium Wilt: Fusarium wilt is a disease that causes the roots to shut down, leading to brown and wilting leaves. It is more likely to occur in wetter parts of the field.
- Phytophthora: Phytophthora is another disease that causes yellowing and wilting of soybean leaves. It tends to occur in drier parts of the field.
- Weather Conditions: Drought followed by saturated wet conditions can exacerbate stress in soybean plants.
Management Strategies:
- Root and Stem Rot: Unfortunately, there is no specific treatment for root and stem rot. Some plants may recover independently, while others may not survive.
- Foliar Feed with Nutrients: When planning herbicide applications, adding a foliar feed with manganese, sulfur, and fulvic acid can help reduce stress in soybean plants.
- Favorable Weather and Oxygen: Providing favorable weather conditions, timely rains, and adequate oxygen to the roots can improve the chances of recovery for most plants.
By understanding and addressing these stress factors, farmers in northern Ohio can take steps to manage the yellowing of soybeans and improve crop health and productivity.
For additional information on farm safety and best management practices, please visit the following link: https://www.farms.com/news/farm-safety/
Photo Credit: istock-ds70
Categories: Ohio, Crops, Soybeans