Black grass mainly sprouts in the autumn and is therefore already rooted strongly enough to withstand harrow tines during the first harrowing of the 3-leaf-stage winter cereal. This harrowing can even stimulate blackgrass sprouting. Heavy soils tend to encourage black grass, further impairing the harrow's effect.
The cereals can be sown with a row spacing of at least
20 cm, so as to enable the use of the duckfoot-bladed hoe or a device combination of harrow and bladed hoe for weed control in between rows, in addition to the harrow.
Thanks to the use of the bladed hoe, strong-rooting grass weeds can be successfully uprooted even in heavier soils. Other problem weeds, such as cow vetch, hemp-nettle, windgrass, or burdock, can also be controlled with the bladed hoe.
• Sow the winter cereal in October, in rows with spacing of at least 20 cm.
• When the cereal is at the 3-leaf-stage, control sprouting weeds with 1-2 harrowing procedures.
• After using the harrow and as the winter cereals begin tillering, root out the yet intact, well-rooted grass weed between the rows with help of a duckfoot-bladed hoeing device. The duckfoot bladed hoe may also be used in combination with the harrow.