2009 NORTH DAKOTA FFA FLORICULTURE CDE
PROBLEM SOLVING (20 POINTS EACH)
Please record all of your answers on the computer scorecard that has been provided. You
must use a No. 2 pencil on this card. Please, do not mark any answers on the exam sheets.
1) Within a growth expansion section of a greenhouse, a grower finds that existing CO2 levels slightly low at 200 ppm. She must inject 2.25 lbs of CO2 gas per hour to increase the atmospheric concentration of CO2 from the standard of 250 ppm to 500 ppm. What would be the CO2 gas flow rate required to increase the atmospheric concentration to 850 ppm of CO2 ?
A. 3.15 lbs B. 5.85 lbs C. 3.825 lbs D. 7.65 lbs
2) A Cabbage Looper infestation in the greenhouse requires that 40 by 70 square feet of bench space will need to be sprayed. If one 12 OZ can will treat a greenhouse with an area of 2500 to 4500 square feet, how much will it cost to treat our green house each time it is used. Orthene TR wholesales for $220.00 for a case of ten plus 6% Tax.
A. $22.00 B. $44.00 C. $23.32 D. $233.20
3) Ten 8 foot by 3” diameter (inside) PVC pipes are used for a hydroponics unit. The rock filler within the PVC provides 65% pore space. Given that there are 7.48 gallons of water in each cubic foot, how many gallons of water will be needed to flood this hydroponic system.
A. 117.49 gallons B. 15.709 gallons C. 29.37 gallons D. 19.09 gallons
4) The dual-control, low/high thermostat in your greenhouse, registers in
Fahrenheit. An imported crop of rare Cymbidiums Orchids must be kept at 20 degrees to 27 degrees centigrade to ensure their health. What temperatures must be set on your
thermostat in order to produce flowers? (Note: F=((9/5 x C)+32))
A. 80.6 F & 84.2 F B. 68 F & 80.6 F C. 37.8 F & 39.2 D. 43.11 F & 47.0 F
5) Your chrysanthemums have gray mold. You have chosen to treat this problem with
chlorothalonil. If the average height of the greenhouse is 7.5 feet, width is 40 feet, and length
is 100 feet, how many ounces of the chemical should you use to treat this problem? (SEE BELOW)
A. 3.5 B. 7.5 C. 9.5 D. 10.5
CHRYSANTHEMUM - GREY MOLD(BOTRYTIS BLIGHT)Chlorothalonil
(Daconil) 2787 75 WP - 1 lb/100 gal or 2 tsp/gal - Spray every 7 to 14 days after disease first appears
(Termil) - 3.5 oz/10,000 cu ft - Fumigate every 7 to 14 days after disease first appears
6) Your local garden center is running a spring sale. All plants are currently
20% off the list price. Regular prices for Petunias are $2.59 per six pack, Zinnias are $2.19 per six pack, Impatients are $2.59 per six pack and wax begonias are $1.99 per four pack and peonies sell for 2.39 each. If you need 60 petunias, 72 zinnias, 42 impatients, and 48 begonias, 8 peonies, you also buy a garden spade for 24.99 and you have a 6% sales tax, what would your total be?
A. $122.58 B. $147.02 C. 110.96 D. $115.64 E. $138.70
7) A home owner has three flower beds into which he plans to till 2 1/2” inches of manure before planting. Two of these beds are three feet wide and 40 feet long, and the third bed is 8’ by 10’ If sterilized manure sells for $2.85 per cubic foot bag and sales tax is 6.5%, what is the total cost of the materials for completion of this phase of the project.
A. $130.73 B. $2428.20 C. $203.36 D. $ 190.95
8) You have 2/3 cubic yard capacity vault type soil sterilizer. The sterilizer will require 130 seconds warm up time for each cubic foot of media. After it has properly warmed up to 160 degrees F, it will have to remain at the temperature for 30.5 minutes. It will also take 13
minutes loading and unloading a batch of media. What amount of time will be required to
prepare 36 cubic feet of media? Assume that one cubic yard= 27 cubic feet.
A. 2 Hours 45 Minutes or 2.75 hours B. 1 Hour 9&1/2 minutes or 1.15 hours
C. 1 Hours 2&1/2 Minutes or 2.04 hours D. 2 Hours 19 minutes 2.32 hours
9) You are responsible for ordering potting media which comes in 3.0 cubic foot bags. It takes one cubic foot of potting media for five 10-inch hanging baskets. How many bags of potting media do you need to pot 1,800 10-inch hanging baskets?
A. 120 B. 185 C. 225 D. 360
10)_____It is approximately 2:00 PM on a Thursday afternoon. You are in the florist shop working on an order when your supervisor, who is currently treating for whiteflies, calls you on the intercom and ask you to bring his folder with the MSDS information to the greenhouse across the alley from the shop. As you walk out the back door of the shop and start across the ally, you see a bolt of lightning strike a tree between the pole were the breaker box is located and the greenhouse. As the tree falls, it gets tangled in the wiring going to the greenhouse from the breaker box and sparks fly. The tree lands across the frame of the greenhouse. You call out for your supervisor, but you do not get a response.
How do you respond to this situation?
A: Open the door of the greenhouse and get your supervisor to safe ground and fresh air.
Then refer to the Monsanto MSDS for instructions on how to treat for Roundup poising.
B. Call 911 and then immediately go in and take your supervisor to safety. Begin giving him CPR until the paramedic arrives. Then give them the Olympic MSDS related to
Marathon.
C. Call 911 and describe the problem including the fact that a hazardous material was in use. Tell them the supervisor was spraying with Marathon. Have MSDS available when they arrive. While waiting, check the area for the fallen wires and throw a breaker if safe.
D. Call 911 and let them know a hazardous material is involved. With caution, gently turn the handle of the greenhouse door to make sure it won’t shock you. Then go in and determine your supervisor’s condition and refer to Monsanto MSDS for correct manner of treatment. As soon as paramedics arrive, let them take charge.
KEY
2009 FLORICULTURE PROBLEM SOLVING
1. B
2. C
3. D
4. B
5. D
6. A
7. C
8. A
9. D
10. C