What is a common method used to clean equipment to avoid herbicide resistance?

Properly washing and cleaning the equipment is crucial in preventing herbicide resistance. Over time, repeated use of the same equipment for different herbicides can lead to a buildup of residues, which may contribute to selective pressure that enhances the survival of resistant weed populations. By thoroughly cleaning the equipment after use, applicators can minimize the risk of cross-contamination between different herbicides. This practice not only helps in maintaining the efficacy of various herbicides but also supports integrated pest management strategies by ensuring that weeds do not adapt to the treatments being applied.

The other choices highlight less effective methods. Using the same old solution may perpetuate the problem by allowing previous residues to influence new applications. Ignoring cleaning procedures altogether increases the risk of resistance developing, as contaminants may carry over and affect the performance of new applications. Rinsing with water only may not effectively remove all residues or contaminants, thus failing to provide the necessary level of cleanliness to prevent the development of resistant weed populations.