Selectivity in herbicides means the chemical can control certain plant types while leaving the crop relatively unharmed. This happens because crops and weeds differ in how they take up, metabolize, or respond to the herbicide’s site of action. Some crops tolerate the chemical due to protective mechanisms or rapid detoxification, while the targeted weeds are sensitive and are killed or suppressed. For example, a herbicide that disrupts a growth pathway may kill broadleaf weeds but not grasses, allowing a cereal crop to survive. It’s not about killing all plants, nor about crops being immune to all pests, and it doesn’t require sunlight to activate.

The main idea is that once contaminated PPE has been properly washed, there’s no extra step needed for the washer itself. The wash cycle designed for the PPE is intended to remove residues, and performing an additional cycle or rapid drying doesn’t provide a safety benefit and can waste resources or risk spreading any residues. So, after washing, you simply complete the normal laundry process and follow standard PPE handling practices, rather than taking extra actions with the machine.

Using resistant or endophytic turfgrass cultivars is a cultural approach to reducing disease and insect damage. Resistant cultivars carry genetic traits that limit how diseases can infect and spread, which lowers disease pressure on the turf. Endophytic grasses host fungal partners that produce alkaloids or other compounds deterring or harming insect pests, leading to less feeding and damage. Because these traits work without chemical pesticides, they reduce the need for chemical controls and fit into an integrated pest management approach. It's still possible for some diseases or pests to overcome resistance or for endophyte effects to vary by species and environment, so while beneficial, they are not a guarantee against all damage. Overall, this strategy is a valid and helpful part of managing turf health.

Bronze birch borer larvae feed under the bark, in the layer between the inner bark and the wood where the phloem and cambial tissues are located. This under-bark feeding lets them create winding galleries that disrupt nutrient and water transport, girdling the tree and weakening or killing it over time. You can recognize the problem by symptoms on the birch canopy and by D-shaped exit holes on the bark where adults emerge. They don’t feed in the canopy, roots, or fruit, since the larval stage is specifically a wood-borer living just beneath the bark.