Use the higher rate on heavy suckering varieties, when sucker pressure is heavier than normal, or when you expect the harvest date to be more than three to four weeks after application. Use a coarse spray that promotes stalk run-down but also wets the upper leaves. Spray Equipment Equipment should be clean, free of other pesticides, and in good working condition. When you plan to spray over-top, always calibrate the sprayer beforehand. This amount approximates 50 gallons per acre using high-clearance equipment.
Low pressure forms larger droplets and promotes stalk run-down.
Some leaf injury may occur with contacts if the spray solution puddles or hangs on the leaf edges. MH used alone should be applied as a fine spray. Cover the leaves well for maximum absorption. These practices are based on registered instructions given on the label of individual products, research, experience from on-farm tests, and practical information from growers. Growers should always follow instructions provided on the label of a particular product.