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Browsing by Author "Trimmer, Walter L."

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Browsing by Author "Trimmer, Walter L."

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  • Chemigation in the Pacific Northwest 
    Washington State University. Cooperative Extension; Pacific Northwest Cooperative Extension; Trimmer, Walter L.; Ley, Thomas W.; Clough, George; Larsen, Dorrell ([Pullman, Wash.] : Washington State University Extension Service, 1992-01)
  • Converting sprinkler systems to lower pressure 
    Hansen, Hugh J.; Trimmer, Walter L.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1986-01)
  • Electrical demand charges-- how to keep them low 
    Trimmer, Walter L.; Hansen, Hugh J.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University Extension Service; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1986-01)
  • Estimating water flow rates 
    Oregon State University. Extension Service; Trimmer, Walter L. ([Corvallis, Or.] : Oregon State University, Extension Service, 1994-09)
    Measuring the flow rate of water is the first step to good water management. All water right holders in the State of Oregon must be able to measure the flow rate of the water being diverted.
  • Extending electric motor life 
    Pacific Northwest Cooperative Extension; United States. Dept. of Agriculture; University of Idaho. Cooperative Extension Service; Washington State University. Cooperative Extension; Oregon State University. Extension Service; Trimmer, Walter L.; Hansen, Hugh J. ([Corvallis, Or.] : Oregon State University Extension Service; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1986-00-00)
  • Irrigation runoff control strategies 
    Hansen, Hugh J.; Trimmer, Walter L.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1986-01)
    More than 4.5 million acres in the Pacific Northwest are irrigated with electric-powered sprinkler systems. Center pivots are used on about 1.25 million acres. Irrigation runoff can be a problem on many of these spri ...
  • Irrigation scheduling 
    Trimmer, Walter L.; Hansen, Hugh J.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1986-01)
    The main purpose for irrigating is to supply needed water for crops. Plant growth is dependent on photosynthesis. While the plant exchanges gases with the air for photosynthesis, some water evaporates. Water is taken ...
  • Irrigation system walk-through inspection analysis 
    Hansen, Hugh J.; Trimmer, Walter L.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension; Pacific Northwest Cooperative Extension Service ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture,, 1986-01)
    This “walk-through” worksheet provides a method for making an organized inspection of an entire irrigation system, both hydraulics and hardware. This inspection will help identify components that need maintenance, repa ...
  • Measuring well water levels 
    Oregon State University. Extension Service; Trimmer, Walter L. ([Corvallis, Or.] : Oregon State University, Extension Service, 1991)
    Groundwater is an important resource in Oregon. As more people depend on groundwater, some water tables around the State are dropping, threatening their water supplies. State law requires that groundwater be managed ...
  • Offsets for stationary sprinkler systems 
    Trimmer, Walter L.; Hansen, Hugh J.; Pacific Northwest Cooperative Extension ([S.l. : Pacific Northwest Cooperative Extension], 1986-01)
  • Pumping plant efficiencies 
    Hansen, Hugh J.; Trimmer, Walter L.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] : Oregon State University Extension Service : [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1986-00-00)
  • Sizing irrigation mainlines and fittings 
    Trimmer, Walter L.; Hansen, Hugh J.; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture ([Corvallis, Or.] : Oregon State University Extension Service ; [Pullman, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension Service ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1986-01)
    When designing or retrofitting an irrigation system, one of the key decisions is picking the proper size pipes and fittings for the system. The best pipe size or fitting is not always the one with the lowest initial ...
  • Stretching irrigation water supplies 
    Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; Trimmer, Walter L.; United States. Dept. of Agriculture ([Covallis, Or.] : Oregon State University Extension Service, Washington State University Cooperative Extension, University of Idaho Cooperative Extension Service, and U.S. Dept. of Agriculture, 1987-11)
  • Stretching irrigation water supplies 
    Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension Service; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension; Trimmer, Walter L. ([Corvallis, Or.] : Oregon State University Extension Service ; [Olympia, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension System ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1994-04)
  • Understanding your right to irrigation water 
    Oregon State University. Extension Service; Trimmer, Walter L. (Corvallis, Or. : Extension Service, Oregon State University, 1988-10)

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