Table Of Content

Historic, Archive Document Do not assume content reflects current scientific knowledge, policies, or practices. aSB763.C2F45 United States OPTIMUM SPRAY a CALCULATION Forest Service Forest’ Health Protection Forest Health _ Technology Enterprise Team- Davis 2121C Second Street Davis, CA 95616 FHTET 96-36 December 1996 Pesticides used improperly can be injurious to human beings; animals, and plants. Follow the directions and heed all precautions on labels. Store pesticides in orginal containers under lock and key—out oft he reach ofc hildren and animals—and away from food and feed. Apply pesticides'so that they do not endanger humans, livestock, crops, beneficial insects, fish, and wildlife. Do not apply pesticides where there is danger of drift when honey bees or other pollinating insects are visiting plants, or in ways that may contaminate water or leave illegal residues. Avoid prolonged inhalation of pesticide sprays or dusts;'wear protective clothing and equipment, if specified on the label. If your hands become contaminated with a pesticide, do not eat or drink until you have washed. In case a pesticide is swallowed or gets in the eyes, follow the first aid treatment given on the label, and get prompt medical attention. If a pesticide is spilled on your skin or clothing, remove clothing immediately and wash skin thoroughly. NOTE: Some States have restrictions on. the use of certain pesticides. Check your State and.local regula- tions. Also, because registrations of pesticides are under constant review by the U.S Environmental: Protection Agency, consult your local forest pathologist, county agriculture agent, or State extension Specialist to be sure the intended use is still registered. FHTET 96-36 December 1996 Optimum Spray Calculation Prepared by: R. P. Banaugh Rt. 5, Upper Miller Creek Road Missoula, MT 59801 Contract No. 26-3651 (July 1, 1976) Prepared for: USDA Forest Service Missoula Equipment Development Center Fort Missoula Missoula, MT 59801 USDA Forest Service Forest Health Technology Enterprise Team 2121C Second Street Davis, CA 95616 (916) 757-8341 * i ; y “yp 4 oe “ae i be e7 S at ie ah geerte ees aw é / P‘omd hs eaxseti e nsael i 7 er: ae. ouae im a a aea e | ‘naie te : ens s 7 a : 5 f > = -o r- Abstract A computer program has been developed to expedite the calcu- lations outlined in the report entitled, "An Approximate Method for Selecting Optimum Drop Sizes" by R. Ekblad. The derivation of the equations upon which the program is based, together with the program listing and typical results, are presented. A second program entitled, "Minimum Drop Size Calculation", has been writ- ten to facilitate the calculation of the minimum lethal spray drop size. Comments on the relevant literature are also made. z = 7 $32 2.9 9Gs. (evs need ead Geavete teteqnn ae oma) -o ee” ~gogex ott «ik Pealizoe lily { . =~ s 4 — ~ a1 ‘ aa y : 5| ‘ons |a e & a 4% ame alt we 5 qo 2) ‘tre ~ w “reita = a. matookg act Eolqe nig ee 7% eflueey «i 4 lite BHA ITRs “i 2 wisgefestead efit goad seootalt* 90a eee ; t | é ; 4 ; ; ) So. nohaeteoled edd edetii0c ao et ae - b y ¢ a a . ‘ A re es owe a ‘onveiot nb? ae ser oar eh : slat TABLE OF CONTENTS Page Abstract i List of Tables, List of Figures, and Program Results abe Introduction Vv Technical Approach dte ak Impact Efficiency Subroutine tia h Calculation of the Probability of Kill Per Class Using the ASCAS Input Data Steal Calculation of Number of Drops/Class from Cumulative Frequency Input Format 4.1 Calculation of the Minimum LD, Drop Diameter, d StL Optimal Spray Drop Calculation Program Description and Comments 6a) Data Format Comments feat User Guide Sel Data Input Sel Data Output 8.4 Output of Results 8.4 Program Results oF Literature Review Loe References abo ad Irs ak Summary [. ‘ied@r@ alt. ic oe ’ tyant aes leds aay y) r at eons 1c 1 cecaeeyi bie sarees ) 1 TAGICT tut -~aneeeeae ~ - a a ." Mest Ls iM. aie 30 wa 7 : ne Joss ! eee. [ostel . Aw “AD bya ta ta , xterm. ee : a a > *toreisr ie mo +r8y , a