Agronomy 180 - Assignment 3 - parts 1 and 2 | Questions And Answers Latest {2024- 2025}
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What is the dominant soil order for Iowa soils? - Mollisols
Plant available water depends on which of the following factors, select all that apply - Soil texture, soil
moisture, soil depth
Using the figure below: Which plant nutrient(s) have a lower availability at a lower pH? - Nitrogen,
PHosphorus, Potassium, Calcium
What type of soil has a permanent wilting point at about 17% soil moisture content? - Clay loam
Using the information contained in the figures below, answer the following: true or false, the global
distribution of soils is related to climate and vegetation patterns. - True
Which soil order is likely to have formed in regions where the natural vegetation is temeprate or
broadleaf forest? - Alfisols
Which scientific notation describes the hydrogen ion concentration (mol l^-1) of a soil with a pH of 7? -
10^-7
A silty soil in Iowa is 1.25 m deep and has a water holding capacity of 220 mm m^-1 in 2018. How much
total water (mm) can this soil hold in 2018? - 275 mm
If the soil from the previous problem erodes at a constant rate of 2.5x10^1 mm yr^-1, how much total
water (mm) can the soil hold in 2038? - 165 mm
Which has the smallest particle size? - Clay
Based on the chart below, a soil condition based on which colored circle would have the most plant
available water? (assume all soils are the same depth) - Blue
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