Unit 6- Plant Needs Flashcards
Absorb
To take up or receive by chemical or molecular action.
Accumulation
Growth by continuous additions.
Deficiency
An insufficiency in reference to amount, volume, proportion, et cetera; a lack.
Essential nutrient
One of sixteen elements required for plant growth. Essential nutrients are necessary for a plant to complete its life cycle.
Growing degree day (GDD)
Used to estimate the growth and development of plants and insects during the growing season.
Growth
An irreversible increase in volume and/or weight.
Herbaceous
Not woody, dying back to the ground each year.
Macronutrient
Chemical element necessary in relatively large amounts.
Micronutrient
Chemical element necessary in relatively small amounts.
Nutrient
An element or compound in a soil that is essential for the growth of a plant.
Permanent wilting point
Point at which no more water is available to the plant.
Threshold
The point that must be exceeded to begin producing a given effect or result or to elicit a response.
Turgor
The distension of the cell wall and protoplasmic layer of plants by fluids.
Turgor pressure
Water pressure within a plant cell.
Wilt
Loss of freshness and a drooping of the foliage of a plant due to an inadequate supply of water, excessive transpiration by the plant, and as a result of a disease interfering with the utilization of water by the plant.
