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2. Tree crown measurement - Wikipedia

   en.wikipedia.org/wiki/Tree_crown_measurement

   All four circumscribe the crown area's drip-line with a polygon and divide the polygon into a series of adjacent triangles, measure the area of each triangle and sum them. One option, the Polygonal Method, measures each side of a triangle to compute its area. The second and third methods uses azimuths and one distance to the trunk calculate the ...

3. Drip irrigation - Wikipedia

   en.wikipedia.org/wiki/Drip_irrigation

   Drip irrigation and spare drip irrigation tubes in banana farm at Chinawal, India Pot irrigation by on-line drippers Pressure compensated integral dripper on soilless medium without growing channels. The advantages of drip irrigation are: Fertilizer and nutrient loss is minimized due to a localized application and reduced leaching.

4. Hazen–Williams equation - Wikipedia

   en.wikipedia.org/wiki/Hazen–Williams_equation

   P d = pressure drop over the length of pipe in psig (pounds per square inch gauge pressure) L = length of pipe in feet; Q = flow, gpm (gallons per minute) C = pipe roughness coefficient; d = inside pipe diameter, in (inches) Note: Caution with U S Customary Units is advised. The equation for head loss in pipes, also referred to as slope, S ...

5. Subsurface textile irrigation - Wikipedia

   en.wikipedia.org/wiki/Subsurface_textile_irrigation

   While significantly reducing the cost of SSTI, the use of drip tapes also permitted the use of large diameter drip lines (of up to 35mm) allowing for run lengths up to one (1) kilometre. The thin, flexible wall of drip tape also meant that master rolls of manufactured product could be much larger (over 600m in length).

6. Irrigation - Wikipedia

   en.wikipedia.org/wiki/Irrigation

   Micro-irrigation, sometimes called localized irrigation, low volume irrigation, or trickle irrigation is a system where water is distributed under low pressure through a piped network, in a pre-determined pattern, and applied as a small discharge to each plant or adjacent to it. Traditional drip irrigation use individual emitters, subsurface ...

7. Pulse drip irrigation - Wikipedia

   en.wikipedia.org/wiki/Pulse_drip_irrigation

   A one-US-gallon-per-hour (3.8 L) drip flow controller feeding an 82-foot-long (25 m) drip line with check valves comprising 82 drip points along its length so each drip point is putting out about 1 / 82 US gallon (46 mL) per hour. Crimson clover sprouts grown on 1 / 8-inch (0.32 cm) urethane foam mats and flagstone.