Question 3b When did the herbicide injury appear? During or immediately after crop emergence Where do you observe damage? Check weeds and crops to determine selectivity. Root development is abnormal and the leaves do not usually exhibit injury symptoms. What are the symptoms? Root growth is inhibited. The root tips have a clubbed appearance. Grasses are more sensitive than broadleaves. –Root inhibitors Plants have pruned roots. The lateral roots are short and slender giving a bottle-brush appearance. Broadleaf weeds are often more sensitive than grasses. –ALS inhibitors Seedling roots are short and thickened with root proliferation. Broadleaves are more senstive than grasses. –Growth regulators Start over
