PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Salt attracts water to the cell, thus helps a plants growth as the plant doesn’t have to work hard to find water.
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Salt reduces plant growth by making it harder for the plant to adsorb water from the environment.
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Salt has no effect on plant growth as they have specialised cells to deal with salt.
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Salt can increase or decrease the growth of a plant, it depends on the environment.
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Detailed explanation-1: -If the irrigation water is moderately saline, the plant has to work harder to absorb water from the soil and growth is slowed, with reduced yields.
Detailed explanation-2: -Salinity affects production in crops, pastures and trees by interfering with nitrogen uptake, reducing growth and stopping plant reproduction. Some ions (particularly chloride) are toxic to plants and as the concentration of these ions increases, the plant is poisoned and dies.
Detailed explanation-3: -Normally, plants use osmosis to absorb water from the soil. However, when you use salt water to water a plant, the plant is unable to perform osmosis because the water is too dense. What ends up happening is that water is actually drawn out of the plant, dehydrating it, and causing it to cripple.
Detailed explanation-4: -Salt stress adversely impacts plants by hindering seed germination, growth and development, and flowering and fruiting [8, 9]. The high concentrations of sodium in saline soil limits water uptake and the absorption of nutrients in the plant [10].