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Checking for first hollow stem stage is easy. Just use a dime. Rapidly changing weather can impact the rate of first hollow stem stage emergence.
Agricultural producers who plant winter wheat as part of a dual-purpose graze-and-grain management system need to ensure cattle are not grazing past first hollow stem stage of the crop, according to Oklahoma State University Division of Agricultural Sciences and Natural Resources recommendations.
Dual-purpose graze-and-grain operations account for about half of the wheat acreage in Oklahoma and a significant portion of wheat grown in northern Texas and southern Kansas.
Although grazing prior to first hollow stem, often referred to as FHS, typically has a limited effect on wheat yields later in the growing season, extended grazing beyond that stage can greatly reduce yields, said Amanda de Oliveira Silva, OSU Extension small grains specialist.