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Right-of-way pesticide exam WITH
ANSWERS
Root-absorbed herbicides are more effective when applied postemergence. T or F - .... 🔰 VERIFIED ANSWERS.... ✔✔ False Define contact herbicide - .... 🔰 VERIFIED ANSWERS.... ✔✔ kills where it directly contacts. Controls annual and biennial Define systemic herbicide - .... 🔰 VERIFIED ANSWERS.... ✔✔ used for perennial weeds. Moves throughout the plant Temperature, moisture, soil-type and rate of application influence the persistence of a herbicide. T or F - .... 🔰 VERIFIED ANSWERS.... ✔✔ True What is temperature inversion and how can it affect pesticide drift? - .... 🔰 VERIFIED ANSWERS.... ✔✔ Temp inversion is when ground air is 2-5 deg cooler than air above it. It increases drift deposits What is the difference between a selective and non-selective herbicide - .... 🔰 VERIFIED ANSWERS.... ✔✔ selective doesn't kill surround veg. non-selective removes most veg
If a plant's growing points are below the soil surface, which type of herbicide will provide better control: contact or systemic? - .... 🔰 VERIFIED ANSWERS.... ✔✔ systemic How can leaf shape affect herbicidal action - .... 🔰 VERIFIED ANSWERS.... ✔✔ herbicides will runoff narrow and upright leaves. Broad leaves hold herbicide longer What climatic factors affect herbicides - .... 🔰 VERIFIED ANSWERS.... ✔✔ humidity, light, precipitation, wind, temp, length of growing season what are the five categories of selective herbicide applications - .... 🔰 VERIFIED ANSWERS.... ✔✔ foliage spraying, basal spraying, granular/pellet, spotgun/exact dose, cut surface herbicide What are the 3 basic foliage spray treatments used in right-of- ways. - .... 🔰 VERIFIED ANSWERS.... ✔✔ low volume ground foliage, high ground foliage, aerial What are the differences between low volume ground foliage and high volume ground foliage treatments? - .... 🔰 VERIFIED ANSWERS.... ✔✔ High volume has a specific concentration that is applied instead of rate per acre. Foliage is prayed to a point where additional spray begins to drip of treated leaves. Larger volumes of mix. Amount applied will very a lot What steps can you take to avoid drift and accidental spraying of non-target plants when using high volume ground foliage treatments - .... 🔰 VERIFIED ANSWERS.... ✔✔ avoid spray pattern
✔✔ applying too much, making improper frilling/girdling cuts, applying too close to wanted veg. Non-selective chemicals must have moisture to enter plant root systems. T or F - .... 🔰 VERIFIED ANSWERS.... ✔✔ True What kind of herbicide should you that is short lived in the soil and if you want to completely kill existing vegetation and immediately replant with ornamentals? Systemic or contact - .... 🔰 VERIFIED ANSWERS.... ✔✔ systemic Use selective herbicide for areas where nontarget tree roots may extend under a target area. T or F - .... 🔰 VERIFIED ANSWERS.... ✔✔ True when are the best results from soil residual herbicides achieved?
- .... 🔰 VERIFIED ANSWERS.... ✔✔ spring List the 5 precautions for non-selective herbicide applications - .... 🔰 VERIFIED ANSWERS.... ✔✔ avoid non-target root system areas, avoid frozen ground, caution when applying soil-residual herb on slopes, use low pressure, choose non-corrosive materials What is the difference between a defoliant and a desiccant - .... 🔰 VERIFIED ANSWERS.... ✔✔ Defoliant: leaves drop without killing plant Desiccant: increases speed of drying plant leaves,stems, and vines
What growth regulator inhibits production of plant hormones that control cell elongation? - .... 🔰 VERIFIED ANSWERS.... ✔✔ Gibberlin Which growth regulator accelerates cell growth and reproduction - .... 🔰 VERIFIED ANSWERS.... ✔✔ auxin What type of growth regulator is 2,4-D? - .... 🔰 VERIFIED ANSWERS.... ✔✔ Auxin Growth regulators are not pesticides and are not regulated by FIFRA. T or F - .... 🔰 VERIFIED ANSWERS.... ✔✔ False (they are regulated by FIFRA) Because gibberllin inhibitors are formulated with an alcohol carrier, trunk injection in the Northern US should only take place between what times? - .... 🔰 VERIFIED ANSWERS.... ✔✔ From bud breaks in spring to leaf drop in fall What do growth regulators used on turf suppress? - .... 🔰 VERIFIED ANSWERS.... ✔✔ plant seedhead development Growth regulators are used in some asphalt-based tree wound dressings. T or F. - .... 🔰 VERIFIED ANSWERS.... ✔✔ True most turf treatments are a combination of regulators. T or F - .... 🔰 VERIFIED ANSWERS.... ✔✔ True
Which sprayer is best for basal applications to small brush or stumps or for limited work in areas inaccessible to large machinery? - .... 🔰 VERIFIED ANSWERS.... ✔✔ compressed backpack sprayer Which sprayer is best for applying brush killers to taller trees or dense brush where brownout is not a problem? - .... 🔰 VERIFIED ANSWERS.... ✔✔ high pressure sprayer Where does hydraulic agitation come from? - .... 🔰 VERIFIED ANSWERS.... ✔✔ return flow What pumps are the most reliable? - .... 🔰 VERIFIED ANSWERS.... ✔✔ piston pumps Where does the additional strainer go? - .... 🔰 VERIFIED ANSWERS.... ✔✔ on intake line What nozzels are most resistant to abrasive materials? - .... 🔰 VERIFIED ANSWERS.... ✔✔ tungsten/stainless steel what pressure are flat fan nozzels most commonly used at? - .... 🔰 VERIFIED ANSWERS.... ✔✔ 40 psi mistblowers are more likely to create drift than a backpack sprayer. T or F. - .... 🔰 VERIFIED ANSWERS.... ✔✔ True
If you purchase the wrong size nozzle, a safe solution is to operate the nozzles at a higher pressure. T or F - .... 🔰 VERIFIED ANSWERS.... ✔✔ False Where would you use off-center nozzles to spray? - .... 🔰 VERIFIED ANSWERS.... ✔✔ roadside and railroads Why should you calibrate the sprayer frequently when using wettable powders and a flat fan nozzle? - .... 🔰 VERIFIED ANSWERS.... ✔✔ as a nozzle wears the spray material delivered increases
