NIAB - National Institute of Agricultural Botany

Back to News and Events

Weed control is confounded by a prolonged cold spring

10 March 2010

Low soil temperatures are keeping weeds ‘closed for winter’, a condition in which they could shrug off any herbicides applied to them. Both grass and broad leaved weeds need to be actively growing for most herbicides to be effective on them, and the prolonged cold weather is increasing the backlog of field work facing arable farmers.