Spacing is 2.0 or 0.5 times the appropriate spacing for the selected crop species. Because spacing of selected crop species is dependent on diameter of the crop trees and the site index of the site, a forest inventory and a calculation of the site index must be done before this section can be completed. Herbicide use All stands are inspected on a regular basis and economic thresholds are used in determining application decisions. All stands are inspected on regular basis and the inspection data are used to determine application decisions. All stands are inspected infrequently and not at regular intervals.
Application is based on historical data.
Stands are not inspected and application is based on selected crop species. All herbicide application is based on label rates in accordance with labeled use. All herbicide application is based on label rates. Application is not based on label rates and is not used in accordance with labeled use. There is no problem with pests that reduce the productivity of the stand.