Lesson Outline
Lesson Media Objects
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Greening Up the Greens - Transpiration Application Scenario
A scenario to accompany the online lesson, 'Transpiration - Water Movement Through Plants'.
Greening up the Greens
Patricia Hain
Department of Agronomy and Horticulture at University of Nebraska-Lincoln, USA
Roch Gaussoin
Department of Agronomy and Horticulture at University of Nebraska-Lincoln, USA
2005
This scenario accompanies the online lesson, 'Transpiration - Water Movement Through Plants', and is designed to allow you to apply the concepts learned in that lesson to a real-life problem.
Lesson Navigation Tips:
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To answer questions, select the button next to the correct answer and then select ’check it’ to see if you are correct.
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To review concepts from the Transpiration - Water Movement Through Plants lesson, click on the link below each question. - Click once on figures to see enlarged versions.
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Scenario
You are a student intern for the summer at Fall Oaks Golf Course in eastern Nebraska. After working there for a month you notice that the greens are not in the greatest condition. In the morning the greens are a lush green color, but then during the middle of the day areas turn bluish-green to brown. The greens seem to recover their green color later in the day, but the plant density (thickness of the greens) has been steadily decreasing since you started working there in early June. The other intern, who worked there last summer, comments that it sure didn’t look like this last year!
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Greens under heat stress turn bluish-green to brown in color and plant health decreases.
(Roch Gaussoin, 2005) |
You decide to impress your boss by taking the initiative to determine how to correct the problem. Before you can make a recommendation, though, you need to gather some information to figure out what the problem is and how it can be remedied.
Your first step is to find out more about the management practices for the greens. You can ask your boss, a Certified Golf Course Superintendent, any of the following questions.
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How much is the golf course used? |
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What are the greens like? |
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Are the greens fertilized regularly? |
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How is pest control addressed? |
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Are the greens receiving enough water? |
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What was the temperature in June & July of 2004? |
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What was the temperature in June & July of 2005? |
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Describing your findings to your boss, he recommends a management technique called “syringing” be done to the greens in mid-afternoon. He describes “syringing” as a light application of water that is sufficient water to wet the green surface but move minimally down into the soil.
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Syringing a green.
(Roch Gaussoin, 2005) |
As a result of your accurate assessment and consultation with your boss, you begin syringing the greens. Over the next few days you see a marked improvement in their appearance.
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Healthy greens on a golf course.
(Roch Gaussoin, 2005) |
Development of this lesson was supported in part by the Cooperative State
Research, Education, & Extension Service, U.S. Dept of Agriculture under Agreement Number PX2003-06237 administered by Cornell University, Virginia Tech and the American Distance Education Consortium (ADEC) and in part by the New Mexico and Nebraska Agricultural Experiment Stations. Any opinions,findings, conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.
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