– Ted Wiseman, OSU Extension, Perry County (originally published in The Ohio Cattleman)
Maintaining high-quality pastures is crucial for Ohio’s beef producers. Weeds compete with forages for nutrients, water, and sunlight, potentially lowering the quality and quantity of the forage available to grazing livestock. Weeds can significantly impact pasture quality and even cause livestock health issues if poisonous species are consumed. Traditional weed control methods include mechanical (mowing), chemical, burning, and biological controls. In 2021 we finished a three-year study focused on mechanical mowing, aiming to understand how different mowing schedules impact weed and forage growth.
In this project we had eight different treatments and were replicated four times. Treatments consisted of a Control (no mowing), mowing one time in June, July, August, September, mowing twice in June/August, July/September and mowing monthly June to September. Each plot was 15×20 feet with a one-foot border. Forage and weed samples were collected at the beginning of each month from June to September. Cattle grazed the paddock between sample collections, and plots were mowed to a height of four inches after grazing. Weights of dry matter (DM) from weeds and forages were recorded to compare the impact of different mowing schedules.
The following table shows the results for the three year average Dry Matter (DM) for forages and weeds.
Monthly mowing significantly reduced weed presence but is not Continue reading Mechanically Controlling Weeds in Pastures