Why is black grass a problem?
Black-grass can greatly affect yield and cause contamination issues at harvest. A few weeds one year can become a significant weed burden over a short time frame. Destroying (spraying with glyphosate or cutting) patches of black-grass in winter wheat in the first week of June will reduce viable seed return. Cutting or spraying earlier or later is likely to be less effective.Black-grass can greatly affect yield and cause contamination issues at harvest. A few weeds one year can become a significant weed burden over a short time frame.The black grass is decaying surface leaves that are likely caused by the combination of a disease called brown patch, intense heat and dry soil conditions – all prerequisites for this fungal disease to manifest itself. Rain (or irrigation) and cooler temperatures are important to enhance recovery in these areas.
How do you manage black-grass?
Use crop rotation to manage black grass Given the right conditions, crops can provide their own weed control by competing with weeds for light and space. Higher seed rates, variety choice and drilling date can all push things in the crop’s favour, meaning herbicides can finish the job. Roundup For Lawns4 is a tough weed killer for use on Southern grasses that kills weeds, not the lawn (when used as directed). This product kills 93 types of weeds, including dollarweed, dandelion, clover, and yellow nutsedge (see inside booklet for weed list).Glyphosate-based herbicides are typically the most effective for killing tough weeds, including perennial weeds and woody plants. Therefore we recommend using anything from our Resolva Pro Xtra Tough Weedkiller range.Tenacity Herbicide — Best Lawn Weed Killer for Overseeding Tenacity herbicide is an industry favorite for killing weeds in your lawn without killing your grass. Optimized for cool-season turf, Tenacity can be used as a pre- and post-emergent herbicide control for over 46 broadleaf weed and grass species.