By Blake Jackson
Recent heavy rains may ease drought concerns for Missouri pastures, but experts warn against complacency. Two University of Missouri Extension specialists caution that mismanaged pastures may still struggle due to past overgrazing and drought.
State forage specialist Carson Roberts and agronomist Valerie Tate highlight two main issues: weakened plants and poor water infiltration. Overgrazing and drought can significantly reduce root systems, limiting plants' ability to access soil moisture.
Here's how to help pastures recover:
Rest and Reduced Pressure: Allow pastures to recover by avoiding immediate restocking after drought. Haying or mowing weak pastures can further hinder root development.
Improved Fertility: Test soil to identify nutrient deficiencies. Amending pH, phosphorus, and potassium can accelerate growth.
Reduced Compaction: Avoid driving heavy equipment on wet or moist pastures, as this compacts the soil and hinders water absorption.
Litter Bank Development: A layer of organic matter on the soil surface offers several benefits:
- Reduced splash erosion from raindrops
- Improved soil aggregation for better water storage
- Lower soil temperatures
A well-developed "thatch" layer (organic matter from dead plants) protects the soil from erosion, promotes aggregation, and keeps it cooler, all contributing to better water infiltration. While allowing some grass to "waste" might seem counterintuitive, Roberts emphasizes that it's an investment in future productivity.
The key takeaway? Rain is important, but the ability to retain moisture is crucial. By addressing weakened roots and poor infiltration, farmers can ensure their pastures thrive, regardless of rainfall amounts. Remember, "It's not about how much rain you get," says Roberts, "it's about how much rain you can keep and access."
Photo Credit: gettyimages-jacqueline-nix
Categories: Missouri, General