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10 Cards in this Set
- Front
- Back
What is gravitational water?
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-ground water
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What is field capacity?
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-maximum amount of water that a soil can hold against the force of gravity
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What is capillary water?
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-water available to plant
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What is the wilting point?
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-point at which a plant is unable to take up additional water from the soil
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What is hygroscopic water?
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-water not available to the plant
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What can excess soil moisture cause?
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-lack of aeration so root cells can't function well
-wilted foliage -disease (fungal and bacterial, damping-off) |
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What can excess rainfall cause?
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-cracking of sugar-rich craps like cherries and tomatoes
-erosion -leachin gof mineral nutrients -anaerobic respiration produces alchol in water-logged roots |
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What are signs of water deficiency?
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-first symptom is gray foliage
-leaves and stems wilt -leaves curl and drop off -fruits wither and drop |
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What causes blossom end rot on tomatoes, peppers, etc?
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-water stress and insufficient calcium
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What causes algae blooms?
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-phosphorus in surface water
*depletes oxygen from the water at night and kills fish |