Question
$1.00 what factors affect soil quality (beside
- From General-Questions: Natural-Sciences-and-Mathematics
- Closed, but you can still post tutorials
- Due on Jun. 09, 2012
- Asked on Jun. 08, 2012 at 04:34:27AM
Q:
what factors affect soil quality (besides fertilizers)? Why is it that certain parts of the world grow great crops (for example grain in the Midwest of NA), while other areas cannot grow enough for their own people - such as Sub Saharan Africa?
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answers
- This tutorial hasn't been purchased yet.
- Posted on Jun. 08, 2012 at 04:40:40AM
A:
Preview: ... lable to plants. Organic matter and good structure will help add to the supply of water in the soil.
Medium-textured soils (loam or silt loam) allow faster movement of moisture from lower depths than either sad or clay. The next consideration to make before soil amending, is to determine the pH of your soil. PH is a scale by which we determine the acidity or alkalinity of soil. The scale runs from 0 (acid) to 14 (alkaline), with 7 being neutral. Most plants grow best in soils with a pH of 6.5 - 7.0. Increased organic matter raises the tolerance level.
At a pH of 6.5 to 7.0, conditions are most favorable for micro-organisms that convent nitrogen from air to an available form for plants. It is also the best environment for bacteria to decompose plant tissue to humus, and all essential mineral nutrients are available to plants in sufficient quantities.
Organic matter
A soil which is too acidic, presents an environment where the bacteria that ...
The full tutorial is about 803 words long .
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Erosion Impacts on Soil and Environmental Quality: Highlands Region of Ethiopia
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- Posted on Jun. 08, 2012 at 06:31:22AM
A:
Preview: ... Why?
Soil erosion has been a major threat to soil quality in Ethiopia since the beginning of agriculture. Slash and burn and tillage before or after planting have led to soil erosion. These practices have been widely unpopular among farmers today. Nevertheless, due to their quick positive effect on yield, pest control, and nutrients availability, some part of the world still rely on theses unsustainable practices to respond to the immediate needs of their people (Donahue, 1972). For example, Ethiopia is one of the fastest growing populations of the world. Providing food, water, shelter and othe ...
The full tutorial is about 477 words long .
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250 Word Original Answer with reference
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- Posted on Jun 09, 2012 at 4:07:17PM
A:
Preview: ... ginal work a ...
The full tutorial is about 11 words long plus attachments.
What factors affect soil quality.docx (15K)