PRESCOTT'S MICROBIOLOGY
11th Edition
ISBN: 2818440045677
Author: WILLEY
Publisher: MCG
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Chapter 31.1, Problem 4CC
Which of the following soils would a farmer be most likely to fertilize: A soil with a C:N ratio of 23, 28, or 37?
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It is June in Fresno and the officials at the water district have just reduced your irrigation ration by 26%. In the field, you determine that the water potential in your soil is
-1.68 MPa while the water potential of your crop is -1.62 MPa.
Question A. Is your crop able to take up water from the soil? Explain.
Question B. It is now late August and your soil water potential is -2.10 MPa, fortunately, you have been granted one magic wish in altering the physiology of your crop to
increase its ability to take up water, however, you must choose from one of the options below. Fill in the values denoted by the ? as needed, and select the option that
will cause the greatest water uptake by your crop.
Option
Vs (MPa)
Vp (MPa)
Vw (MPa)
-1.90
0.00
-2.59
+0.13
-2.4
-2.09
-2.05
-2.28
+0.17
4.
43. Two soil samples, A & B, at same soil moisture levels are placed in
contact with each other. Water will more likely move from soil B to soil A if
their osmotic potentials, expressed in kPa, are:
O A=-30;
B=-70
O A=-10;
B=+10
O A=-60;
B=-10
O A=-50;
B=-100
OA=-20%;
B=-20
Chapter 31 Solutions
PRESCOTT'S MICROBIOLOGY
Ch. 31.1 - How are filamentous microbes especially well...Ch. 31.1 - Prob. 1CCCh. 31.1 - Prob. 2CCCh. 31.1 - What microbes commonly degrade cellulose and...Ch. 31.1 - Which of the following soils would a farmer be...Ch. 31.1 - Why is most nitrogen fertilizer added as ammonium...Ch. 31.2 - What are the differences in preferred soil...Ch. 31.2 - What types of archaea have been detected in soils?Ch. 31.2 - Prob. 3CCCh. 31.3 - Define rhizosphere, rhizoplane, and associative...
Ch. 31.3 - What unique stresses does a microorganism on a...Ch. 31.3 - List two ways in which compounds produced by...Ch. 31.3 - What important genera are involved in associative...Ch. 31.3 - Prob. 1MICh. 31.3 - Prob. 2.1CCCh. 31.3 - Prob. 2.2CCCh. 31.3 - What is the function of the rhizomorph and the...Ch. 31.3 - Describe the uptake and transfer of ammonium by...Ch. 31.3 - Propose two potential functions for mycorrhization...Ch. 31.3 - How do you think Frankia spp. protect nitrogenase...Ch. 31.3 - List several bacteria that are considered...Ch. 31.3 - Prob. 3.2CCCh. 31.3 - What does the term terminally differentiated mean?Ch. 31.3 - How does nitrogen transfer between a rhizobium and...Ch. 31.3 - What is unusual about leghemoglobin production and...Ch. 31.3 - What are the two general mechanisms by which...Ch. 31.3 - How does the production of opines by the plant...Ch. 31.3 - What is the difference between the Ti plasmid and...Ch. 31.3 - What functions do the members of the two-component...Ch. 31.3 - What are the two general ways by which plant...Ch. 31.3 - How are plant pathologists attempting to control...Ch. 31.4 - Compare and contrast the metabolism (specifically,...Ch. 31.4 - What happens in terms of microbiological processes...Ch. 31.4 - What microbial genera have been observed in oil...Ch. 31 - Prob. 1RCCh. 31 - Prob. 2RCCh. 31 - Prob. 3RCCh. 31 - Prob. 4RCCh. 31 - Prob. 5RCCh. 31 - Prob. 6RCCh. 31 - Prob. 7RC
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