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Herbicide & Pesticide Practicum (15 Minutes---100 Points Total) Name________________________________ Please answer the following questions. Be specific. 1. Explain what the difference is between the term herbicide and the term pesticide (15 pts)?
2. What is the basic definition of a weed (15 pts)?
Use the label for RAPTOR herbicide (pages 4-6 of this exam) to answer the following questions. 3.
You plan to spray RAPTOR, a postemergence herbicide, to control
Common Lambsquarter in your minimum tillage
soybean crop. You have not used this herbicide before so you
read up on its use in soybeans .
a. Assuming you will not precede your application of RAPTOR with a full-labeled rate of a soil applied grass herbicide, what application rate should you use to control Common Lambsquarter (6 pts)?
b. Assuming a broadcast rate of 5 fluid ounces per acre, what acreage of soybeans will 1 gallon of RAPTOR treat (6 pts)?
c. What size should your Common Lambsquarter plants be when you apply RAPTOR (6 pts)?
Please complete the following questions. For questions that involve calculations make sure to show all of your work in order to receive partial credit if your answer is incorrect! You will be required to use some of the conversions listed bellow-make sure to watch your units . Useful Conversion Factors: 1
liter (l) = 1,000 milliliters (ml) 4.
You have determined that you have 200 acres of wheat that needs
to be sprayed. The boom on your sprayer is 30 feet and has 18
nozzles. You have XR8002 nozzles, which are designed to deliver
0.2 gallons/minute at 40 psi. To make sure, you check the output
of 4 random nozzles and determine that they deliver 12.3, 14.0,
11.2 and 13.5 oz/30 seconds at 40 psi. Based on the output of
the 4 nozzles, what is the delivery rate in gallons/minute
for your boom (30 pts)?
Nozzle 1
Nozzle 2
Nozzle 3
Nozzle 4
gal/min/nozzle
gal/min/boom
Now is your chance to stretch out. You will need to refer to the plant specimen to answer the following questions. 5. Identify weed X (10 pts)
6. Does weed X have a perennial, annual or biennial life cycle (6 pts)?
7. Is weed X a monocot (monocotyledon) or dicot (dicotyledon) (6 pts)? |