Cleavers are appearing in many winter and springcereal crops, threatening to cause lodging and wreak havoc at harvest, says DowAgroSciences. There is still time to protect crops against perniciousbroad-leaved weeds but farmers must act now.
Winter cereal crops have looked generally free ofbroad leaved weeds for much of the growing season, says Stuart Jackson, cerealherbicide specialist at Dow AgroSciences. However, cleavers are now appearingin many crops. Residual activity from autumn and early-spring treatments hasrun out, but harvest is still some weeks away. Any small cleavers will now growrapidly with the potential to hamper harvest, not to mention a legacy ofreturned seed for following crops.
A new solution to the cleavers challenge is DowAgroSciences concentrated broad-leaved weed herbicide Starane Hi-Load,capable of controlling cleavers even at this late stage. In winter wheat andbarley, it can be applied right up to GS45.
The new formulation is ideal for this busy time ofyear. Excellent tank mix compatibility means it can be applied with a widerange of treatments. Whats more the concentrated formulation of fluroxypyrmeans each pack treats more hectares, speeding up sprayer turnaround.
In spring cereals, recent rain has led to moreweeds becoming apparent. Not only cleavers, but flushes of black bindweed andchickweed have appeared, which all threaten to cause harvest difficulties andreduced yields. Here, Starane Hi-Load is ideal and can be used up to GS 39 inspring wheat and spring barley. It mixes well with other herbicides includingsulphonyl ureas and phenoxy type herbicides.
Mr Jackson says: In some crops, volunteer rape canbe seen above canopies. In these situations, where either no broad-leaved weedherbicide was applied, or it was ineffective, there are likely to be a range ofother weed species present, including cleavers, which will need inspecting andtreating.
Even at this stage, treating with Spitfire(fluroxypyr + florasulam) can provide control of a wide range of species andhelp limit yield losses.