Across
- 2. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
- 5. sliding gate moves up and down when operated. Mostly used on isolation valves.
- 6. in a plant, converts oxygen and glucose into water and carbon dioxide releasing energy for use
- 7. The science of fluids in motion.
- 9. all available pore space is full; some water will drain out of the root zone before roots can absorb it
- 11. loss of water from the soil both by evaporation from the soil surface and by transpiration from the leaves of the plant growing on it
- 13. Loss – The term given for the loss of energy in terms of pressure. Occurs when water moves thru pipe or any other piece of irrigation equipment. Also occurs when water moves uphill.
- 14. a device that prevents contaminated water from being sucked back into the water source (important with potable water systems)
- 16. the name given to pipe(s) which go from the water source to the control valves. In our larger systems, we will also have sub-mains.
- 17. abbreviation for Poly-Vinyl-Chloride.
- 18. flow of water from aboveground into the subsurface
- 20. a measurement of pressure.
- 21. water available for plant uptake
- 22. the plant has extracted all available moisture from the soil that it can; there is still moisture in the soil but it is not available to the plant; the point where the plant suffers substantial damage because of lack of water (up to and including death)
- 24. Water pressure measured when the water is not moving. It is a measure of the water’s potential energy.
- 25. the part of the sprinkler head that the water comes out of. Usually a carefully engineered part to assure a good pattern. Usually removable and cleanable. Plastic nozzle replacement is generally preferred over cleaning, as even small scratches can cause big problems with water distribution uniformity.
Down
- 1. A measurement of water application. Given in the depth of water applied to the soil. Measured in inches per hour (in./hr.)
- 3. the generic term for various parts that attach pipes and other components together.
- 4. optimum amount of water in the soil; 50/50 air and water in pore space
- 8. the name given to pipe(s) which go from control valves (zone valves) to the irrigation heads.
- 10. a rotating ball with a hole thru the center of it. Turned so hole aligns with water flow to open.
- 12. A valve used to isolate all or part of the irrigation system for repairs, maintenance, or winter shut down (winterization).
- 15. the point where the plant requires deep watering
- 19. also known as overland flow or runoff; flow of water occurring on the ground when infiltration capacity is reached
- 23. movement of water up through a plant