FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Soil organisms actually have little effect on soil.
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Their activities increase the available mineral matter.
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Their activities enhance drainage and improve air exchange.
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They deplete the soil of essential elements for plant growth.
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Detailed explanation-1: -Drainage promotes beneficial soil bacteria activity and improves soil tilth. There is less surface runoff and soil erosion on drained land. Improved field machine trafficability reduces soil structural damage. Soil compaction is reduced and less energy is required for field machine operations.
Detailed explanation-2: -Soil Organisms Earthworms and nightcrawlers benefit the soil in many ways. Their burrowing helps to mix the soil and improve the ability of the soil to drain, soil aeration, and soil structure.
Detailed explanation-3: -The actions of soil organisms are extremely important for maintaining healthy soils. These organisms can change the physical organization of soil by creating burrows, can add nutrients to the soil through the breakdown of dead leaves, and can help to control the populations of other soil organisms, [4].
Detailed explanation-4: -In nutrient management, soil aeration influences the availability of many nutrients. Particularly, soil air is needed by many of the microorganisms that release plant nutrients to the soil. An appropriate balance between soil air and soil water must be maintained since soil air is displaced by soil water.