The tank mix should contain 1.5 to 2 gallons of MH plus 2 quarts of Butralin mixed in 50 gallons of water per acre. For a smaller amount, mix 0.25 pint of Butralin and 0.75 pint of MH in 3 gallons of water. Use a coarse spray that promotes stalk run-down but also wets the upper leaves. Stifle Stifle received registration for burley tobacco in 1998. Stifle is a prepackaged product containing 1.5 pounds of maleic hydrazide and 1.125 pounds of butralin per gallon.
Stifle mixes readily with water to form a light yellow suspension.
The suggested label rate for Stifle is 1.5 to 2 gallons per acre in 50 gallons of water. 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.