Christopher+Senior+Exit+Project

The majority of of the fine, absorbing roots of the tree are in the o and a horizons.

How do soil texture and organic mater influence the buffering capacity of a soil?

Why are arid soil generally alcaline and high in salts?

Why is hygroscopic water, the water remaining in soil at permanent wilting point unavailable to plant roots?

Explain why a planting container filled completely with soil drains better than a container with gravel at the bottom?

If, during construction, most of the A horizon and organic layer is stripped away leaving the B horizon as the uppermost soil, what would be the effects on newly planted trees and landscape?

How much water would you need to add too a five foot deep clay soil at permenant wilting point to bring it up to field capacity, if it's field capacity is up to the field capacity, if it's field capacity is four inches per foot and it's permanent wilting point is 2 inches per foot?

What are the necessary elements to bring life from soil? *?

What do plants need from the soil?

How is the soil in most third world countrys? *?

How is soil polluted?

What impact does adding old motor oil have on a natural soil with a ph of 6.5?

What type of plants control and leach the soil in a ph of 6.5-7

What insect organisms break down decayed plant material and bring natural nurtients and what are the nutrients broken down?

whats the difference bettween ﻿*?

Do salts build up in soil from heavy rainfull?\ Chris--you have a lot of great questions related to soil. Some of the questions would be hard to research--I am putting a question mark by the ones I think would be hard to research this year in New York. Then look at what is remaining and think about how you would set up a study to research the question. Try to get down to about 3 good ones that we can discuss.