Forage Fax

Weeds are a persistent challenge in forage systems, competing with desirable species for nutrients, light, and moisture, and reducing both yield and forage quality. An integrated weed management (IWM) approach combines multiple strategies to effectively control weeds while promoting healthy, productive pastures and hay meadows Why Integrated Weed Management? Unlike single-method weed control, IWM uses a combination of cultural, mechanical, biological and chemical practices tailored to specific conditions. This approach reduces reliance on herbicides, minimizes resistance development, and supports long-term sustainability. Key Components of Integrated Weed Management Prevention… Read More →

  Vanessa Corriher-Olson Forage Extension Specialist Soil & Crop Sciences, Overton, TX vacorriher@ag.tamu.edu Texas A&M AgriLife Extension Service Texas A&M University System

The bermudagrass stem maggot (Atherigona reversura), a pest of bermudagrass forage in Texas has been reported in multiple counties since 2012. The bermudagrass stem maggot is native to south Asia (from Japan westward to Pakistan) and was first reported in the United States in Georgia in 2010. This pest only infests bermudagrass and stargrass (Cynodon spp.). The fly (yellow with black head) lays its eggs within the stem of the bermudagrass plant. Once the egg hatches the larva, or maggot, (white with black head, 1/8” – 3/16” long)… Read More →

Carolina Horsenettle (Solanum carolinense) A warm season perennial, Carolina horse nettle can grow to 2 feet tall. It has dark green leaves that are sharply lobed with a pointed tip. Carolina horse nettle has large spines on the stems and leaves. Each of its mostly oval leaves has several teeth or shallow lobes on both sides. Horse nettle has clusters of white to purple flowers and they bloom May to October. Horse nettle also produces a fruit that is about 1/2 inch in diameter; it is green with… Read More →

Since April 2025, southern Texas pasture and hay producers have been fighting the pasture mealy bug. The Department of Entomology and the Texas A&M AgriLife Extension Service have been working diligently to identify this new pest and to work towards solutions for landowners.   Images and additional details about the Pasture Mealybug can be found in the following publication: The Pasture Mealybug   For additional information and for reporting the pasture mealybug in fields please contact your local County Extension agent.     Vanessa Corriher-Olson, Forage Extension Specialist,… Read More →

Bermudagrass decline is characterized by gradual thinning or outright loss of bermudagrass stands over time. Below are some of the reasons associated with bermudagrass decline: 1. Fertility: The lack of an appropriate fertility program may be the number one cause of bermudagrass decline. Nitrogen (N) is important for forage production, however, it is often the only nutrient applied. Phosphorus (P) and Potassium (K) are critical for forage production and persistence. Potassium (K) has been shown to be an important nutrient for forage, stolon and rhizome production. It is… Read More →

Broadleaf Marshedler (Iva annua L.) is a warm season annual in the Sunflower family. Also called broadleaf sump weed. The leaves are situated in pairs across from each other on the stem. Marshelder grows in wet, moist areas, disturbed areas, and roadsides. This plant germinates in the early spring in February or March. The flowers, which resemble those of the ragweed group, are inconspicuous. It flowers in later summer and fall. Select Herbicide Options: Weedmaster 2, 4-D GrazonNext HL Duracor Grazon P+D Milestone PastureGard Chaparral (for bermudagrass pastures,… Read More →

Silver Leaf Nightshade (Solanum elaeagnifolium Cav.) is an upright, usually prickly perennial in the nightshade family. It normally grows 1 to 3 feet tall and reproduces by seed and creeping root stalks. Leaves have a silver color (hence the name) with wavy margins and are lance shaped to narrowly oblong. Flowers are violet or bluish (sometimes white) with yellow centers. The fruits are round and yellow and are present from May to October. The plant has poor forage value for livestock and wildlife and can be poisonous to… Read More →

Crabgrass is a warm-season annual grass that is commonly found in pastures and hay meadows in parts of Texas. Relative to other warm-season annual grasses, crabgrass has a low- to medium-yield potential but is high in forage quality. As such, it is often a desirable component in pastures and is sometimes planted for forage in pastures. As is the case with many annual grass species, crabgrass is a prolific seed producer which enables new stands to establish in subsequent growing seasons for summer grazing. Due to its high-volume… Read More →

Nitrogen is an essential plant nutrient. Plants readily take up and use two forms of soil nitrogen, ammonium (NH4+) and nitrate (NO3-). Other forms of nitrogen must be converted to one of these compounds before plants can utilize them directly for plant growth. Sources of Nitrogen: Plants such as legumes “make their own” nitrogen. A symbiotic (positive for both parties) relationship between a legume and rhizobium bacteria develops and the bacteria “fix” nitrogen out of the atmosphere and convert the nitrogen gas into forms that can be used… Read More →