By Andi Anderson
Farmers often face a gap in forage supply after the first hay cutting and before silage corn is ready. Warm-season annual grasses provide an effective solution during this period. These crops grow quickly, produce large amounts of biomass, and can be planted later than traditional crops, making them a flexible and cost-effective option.
Warm-season grasses can be planted when soil temperatures reach around 60 to 65 degrees Fahrenheit. Planting can continue through early summer, allowing farmers to adjust based on weather conditions.
These grasses are known for their ability to grow in hot and dry weather, making them highly water-efficient. However, proper soil moisture is still necessary for seed germination, and late planting in dry conditions may result in uneven stands.
Among the available options, sorghum-sudangrass is one of the most popular choices. This hybrid crop combines the strengths of sorghum and sudangrass. It grows rapidly and can be ready for harvest within 30 to 45 days under good conditions. Sorghum performs well in dry weather, while sudangrass produces thinner stems, making it suitable for hay production.
Other warm-season options include teff and millet. These crops may produce slightly less biomass compared to sorghum-sudangrass, but they have advantages. Their finer stems improve palatability for livestock and make them easier to dry for hay.
Browntop millet also performs well in soils with lower pH levels. Farmers can choose these crops depending on their needs and field conditions.
Selecting the right variety is important for achieving good results. Some grasses have strong regrowth ability, allowing multiple harvests in a single season. Sorghum-sudangrass generally performs well in this regard, while pearl millet often provides better regrowth than foxtail millet. Farmers are advised to consult seed suppliers and review local trial data before making decisions.
Proper nitrogen management is also necessary for optimal growth. Nitrogen requirements vary depending on the crop and expected yield.
Applying too much nitrogen can increase costs and may lead to nitrate accumulation, especially in dry conditions. Splitting nitrogen applications into smaller doses can help improve efficiency and support better regrowth.
Overall, warm-season annual grasses offer farmers a reliable way to produce forage during summer. Their quick growth, drought tolerance, and flexible planting window make them valuable tools for maintaining livestock feed supply and improving farm productivity.
Photo Credit: pexels-mattycphoto
Categories: Ohio, Livestock