Media release no.
25 January 2001 Grain growers have been urged to safeguard this season's crop from weeds, after recent heavy rainfall in the Eastern and Northern Wheatbelt. Summer weeds use valuable sub-soil moisture useful to future crops, while volunteer cereal germinations increase the risk of carryover diseases, like rust. Last season some farmers estimated wheat yield losses in the order of 300 to 500 kilograms per hectare due to the fact that they delayed spraying their summer weeds. Ms Stewart said the key to summer weed control success is to control the weeds early, preferably before they are three to four weeks old. Generally speaking if there are two separate or distinct germination events you should expect to spray twice.