Exam Review 4
- Northern Oklahoma College
- Plant And Soil Science
- Plant And Soil Science 1213
- Exam Review 4
Last Modified: 2011-05-04
-water: reactivate enzymes
-air: to breathe
symbiotic nitrogen fixation
synthetic & organic fertilizers
-defficiency causes yellow leaves
-energy activation (cellular signaling)
-water relations (turgor pressure)
-energy production (ATP)
nutrient content & recomendation
some microorganisms are able to convert atmospheric nitrogen into organic nitrogen that can be used by plants;
greatest source in the nitrogen cycle!
-process in which excess nutrients enter a body of water
-excess growth causes algal and hypoxia
-usually associated with runoff of fertilizers
measure of the concentration of H+in the soil solution
-affects which crops can be grown
regulates nutrient availability and microbial activity
-federal and state laws
-animal and plant health inspection service
-prevention, eradication, quarantine
managing the growing environment using cultural practices:
-mode of action
-method of application
decrease irrigation efficiency
interfere with harvest
piercing & sucking
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