All weeds are not created equal and there are so many of them, with different life cycles and survival strategies . Each weed species competes differently with corn, or any crop, with some species being much more competitive than others. Understanding the differences between each species and their competitive factors can be very important in determining what weed management strategy will provide you the best return on investment. Since weeds are not created equal we should acknowledge that neither are crops. Each crop differs in its competitive ability as well.
Corn is one of the most competitive row crops planted in Nebraska.
The relative competitive load necessary to cause a specific yield loss quantifies the competitiveness of a crop. This is all under the assumption that the weeds emerge at the same time as the crop. Accurately calculating yield loss, especially when several species of weeds are present in the field, can be very difficult. Utilizing this type of technology allows for more accurate yield loss analysis, providing better information needed to make a weed management decision. Various techniques are available and depending on individual circumstances, one may be better than the other.