District pipe systems: Concrete irrigation systems compared in study of efficiency of open, closed, and semi-closed types
AuthorArthur F. Pillsbury
Author AffiliationsArthur F. Pillsbury is Associate Professor of Irrigation, University of California College of Agriculture, Los Angeles.
Hilgardia 5(6):7-8. DOI:10.3733/ca.v005n06p7. June 1951.
Surging can' be minimized in future designs in the open system of concrete pipe irrigation but the closed and semi-closed types–where surging is no problem–have much to offer.
Pillsbury A. 1951. District pipe systems: Concrete irrigation systems compared in study of efficiency of open, closed, and semi-closed types. Hilgardia 5(6):7-8. DOI:10.3733/ca.v005n06p7
Also in this issue:Sugar beet production, 1951: California acreage likely to be lower than last year as farmers find it more profitable to shift to other crops
Sugar beets and climate: Effects of night and day temperature and day length on beet growth and sugar production investigated
Control of orangeworms: Cryolite, DDD, parathion found most effective against four main species of orangeworms in southern California
Pest control by bacteria: Alfalfa caterpillar in field reduced to sub-economic levels within two days by bacillus applied as spray
Nitrogen needs of citrus: Losses caused by leaching and volatilization can be reduced by management and irrigation practices
Nitrogen on cantaloupes: Fertilization tends to increase fruit size and reduce culls but does not affect mosaic infection and yield
Dairy industry research: Brief progress report outlines current work aimed at improving the maior dairy products of California
Mastitis control: Proper management of herd most important in successful program
Deciduous character of pepper: Tiny fruited form is crossed with non-deciduous variety to get easy-to-pick pepper for commercial use
Use of fire in land clearing: Proper ignition techniques important requirements for successful management of controlled burns
Some carbohydrate and nitrogen constituents of alternate-bearing sugar prunes associated with fruit bud formation