Right-of-way pesticide exam questions and answers 2024

Right-of-way pesticide exam questions and answers 2024 Root-absorbed herbicides are more effective when applied postemergence. T or F - Answer-False Define contact herbicide -Answer-kills where it directly contacts. Controls annual and biennial Define systemic herbicide -Answer-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 -Answer-True What is temperature inversion and how can it affect pesticide drift? -Answer-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 -Answer- 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? -Answer-systemic How can leaf shape affect herbicidal action -Answer-herbicides will runoff narrow and upright leaves. Broad leaves hold herbicide longer What climatic factors affect herbicides -Answer-humidity, light, precipitation, wind, temp, length of growing season what are the five categories of selective herbicide applications -Answer-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. -Answer-low volume ground foliage, high ground foliage, aerial What are the differences between low volume ground foliage and high volume ground foliage treatments? -Answer-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 -Answer-avoid spray pattern being too high/far, use low pressure, avoid unfavorable weather, spray parallel to edge of right-of-way What is the difference between conventional basal spraying and low volume basal spraying -Answer-low volume uses a more concentrated herbicide mix In low volume basal spraying stems are completely encircled and wet to rundown. T or F -Answer-False