Agronomy 182 Exam 1 | Questions And Answers Latest {2024- 2025} A+ Graded | 100%
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90 cm3 soil sample weighs 130 g. when collected in the field. After oven drying it weighed 117 g. what is
the bulk density of this soil sample? - 1.30 g/cm3
Which of the following would you expect to have the highest soil temperature under otherwise identical
conditions? - A field dry sandy loam soil with low organic matter content.
Which structural unit is frequently found in forest derived soils but is much less common in grass
derived soils? - Platy
The E horizon is a transition horizon. - False.
An eluviated zone might be called a (an) ___ horizon. - E
Spherical structural units would most probably be called: - granular
It takes less ___ to dominate soil properties relative to the other two. - clay
The horizon of greatest biological activity is the ____ horizon. - A
What is the percent silt in a soil sample that yielded the following data? SW: 75g 40 sec: 45g/1 2 Hr:
35g/1 - 13%
Generally, soils high in ___ are potentially more fertile. - clay
In an idealized soil the organic matter occupies____ of the total volume of the soil. - 5%
A soil sample had a very low reading at 40 seconds and was slightly lower after two hours. When placed
in the textural triangle it will be found near the ____. - Lower left side
Verified
90 cm3 soil sample weighs 130 g. when collected in the field. After oven drying it weighed 117 g. what is
the bulk density of this soil sample? - 1.30 g/cm3
Which of the following would you expect to have the highest soil temperature under otherwise identical
conditions? - A field dry sandy loam soil with low organic matter content.
Which structural unit is frequently found in forest derived soils but is much less common in grass
derived soils? - Platy
The E horizon is a transition horizon. - False.
An eluviated zone might be called a (an) ___ horizon. - E
Spherical structural units would most probably be called: - granular
It takes less ___ to dominate soil properties relative to the other two. - clay
The horizon of greatest biological activity is the ____ horizon. - A
What is the percent silt in a soil sample that yielded the following data? SW: 75g 40 sec: 45g/1 2 Hr:
35g/1 - 13%
Generally, soils high in ___ are potentially more fertile. - clay
In an idealized soil the organic matter occupies____ of the total volume of the soil. - 5%
A soil sample had a very low reading at 40 seconds and was slightly lower after two hours. When placed
in the textural triangle it will be found near the ____. - Lower left side
