Spraying is one of the most efficient ways to deliver essential chemicals to a garden. Gardeners can quickly incorporate fertilizers if a plant needs a specific nutrient to thrive. Gardeners who spray their lawns can more easily spot treat weeds, killing them off to protect the nutrients for the grass. Spray treatments can also coat plants and lawns with pesticides that protect them from organisms which consume the vegetation.
One form of lawn spray treatment is mole treatment. Gardeners spray repellents on the areas where the moles and voles burrow so that these animals leave the area. They also spray treatments that kill the grubs, so that the moles and voles have less food to feed on, encouraging them to travel elsewhere.
Pesticide treatments come in many varieties, depending on the species of pest that you are combating. Some pesticides act as dessicants, drying out the pests. Other pesticides act as growth regulators and cause the pests to grow too fast or too slow, often killing them. Some also prevent the pests from reproducing. Products containing acephate can kill billbugs and spittlebugs, two common lawn pests.
For the lawn, use herbicides that attack broadleaf weeds such as dandelions, thistle, chickweed, clover, knotweed and mallow. Isoxaben, dicamba and triclopyr work well as lawn treatments for weeds.
Fertilizers are best worked into the soil using compost or other methods. However, gardeners who choose chemical fertilizers can disseminate this fertilizer more efficiently using sprayers. Ideally, the fertilizer gets on the soil, where the fertilizer seeps in towards the roots of the turf. Fertilize your lawn at least twice a year; ideally, fertilize four to five times a year for a lush lawn. Fertilize cool season grasses during the late winter and early spring; fertilize warm season grasses in the early spring and late summer. Lawns need a moderate amount of nitrogen, a low amount of potassium and a moderate amount of phosphorus.
After spraying chemicals on a lawn, perform maintenance on your sprayer by letting all of the compressed air out of the sprayer and cleaning the sprayer out. Some chemicals can breakdown overtime and become hazardous. Also, try to use different sprayers for different chemicals, since the residual chemicals from one treatment can interact with the new chemicals, changing the properties of these chemicals.