PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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less than 20 percent
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more than 30 percent
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40 percent
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50 percent
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Detailed explanation-1: -Silt particles are medium sized and have properties in between those of sand and clay. A loamy soil, then, is one that combines all three of these types of particles in relatively equal amounts.
Detailed explanation-2: -Sandy soils are often known as light soils due to their high proportion of sand and little clay (clay weighs more than sand). These soils have quick water drainage and are easy to work with.
Detailed explanation-3: -An ideal soil for plant growth contains 50% pore space and 50% solids, with the pore space filled with equal parts air and water.
Detailed explanation-4: -It has a low content of nitrogen and organic matter with very high calcium carbonate and phosphate, thus making it infertile. The amount of calcium is 10 times higher in the lower layer than in the topsoil.