Plant Needs

6. The point that must be exceeded to begin producing a given effect or result or to elicit a response.
7. Height above sea level or height above any selected base point.
9. Becoming mature or ripe.
11. An insufficiency in reference to amount, volume, proportion, et cetera; a lack.
12. Growth by continuous additions.
13. Water pressure within a plant cell.
16. Chemical element necessary in relatively large amounts.
18. Not woody, dying back to the ground each year.

1. The angular distance north or south from the equator of a point on the earth's surface, measured on the meridian of the point.
2. The lowest temperature where metabolic processes result in a net substance gain in aboveground biomass.
3. 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.
4. An irreversible increase in volume and/or weight.
5. Used to estimate the growth and development of plants and insects during the growing season.
8. Chemical element necessary in relatively small amounts.
10. To take up or receive by chemical or molecular action.
14. An element or compound in a soil that is essential for the growth of a plant.
15. One of sixteen elements required for plant growth. Essential nutrients are necessary for a plant to complete its life cycle.
17. The distension of the cell wall and protoplasmic layer of plants by fluids.