California Agriculture, April 1957
Volume 11, Number 4
Irrigated areas of California
Allocations of ground water: Economic implications of the court reference procedure for allocating ground water important in its development and use
by J. Herbert Snyder
Abstract Not Available – First paragraph follows: The relatively scarce ground-water resource of the Raymond Basin area of Los Angeles County has been allocated by a legal process—the Court Reference Procedure—among the wants and needs that can be satisfied by its use.
Recharge studies: Refilling underground water reservoirs problem to many governmental agencies
by Warren A. Hall
Abstract Not Available – First paragraph follows: Approximately 60% of California's irrigated agriculture depends on reservoirs of ground water.
Watershed management: Good practices required for the optimum production of forage and water yields demonstrated by results of long term study
by R. H. Burgy, A. F. Pillsbury
Abstract Not Available – First paragraph follows: Manipulation of vegetation—as a form of management of brush covered watersheds—has shown promise as a means of increasing seasonal runoff.
Water conservation districts: Problems in the use of the public district for ground-water management require organizational flexibility in procedures
by Stephen C. Smith
Abstract Not Available – First paragraph follows: Ground water generally has been physically and economically accessible to the individual overlying user. Only within the past three decades has public discussion been focused upon the potential benefits from coordinating individual development.
Quality of irrigation waters: Primarily determined by mineral constituents and the total salt concentration in water applied for agricultural purposes
by L. D. Doneen, D. W. Henderson
Abstract Not Available – First paragraph follows: A water deficiency in some areas of the state, a growing population, with added irrigated acreage will increase the use and re-use of agricultural waters and tend to pollute and degrade them to the point of becoming a serious problem.
Reclaimed water: Sewage effluents as source of irrigation water attracting increasing attention
by H. A. Schreiber
Abstract Not Available – First paragraph follows: About 10% of the developed water supply in California is used for domestic or industrial purposes and 90% for crop irrigation.
Water-soil-plant relations: Soil moisture-plant growth relations are influenced by many factors including soil type, plant root systems and weather
by Robert M. Hagan
Abstract Not Available – First paragraph follows: With irrigation—and where necessary, with drainage—the farmer can exercise greater control over soil moisture than over any of the other soil physical factors.
Grapes and deciduous fruits: Irrigation of deciduous orchards and vineyards influenced by plant-soil-water relationships in individual situations
by F. J. Veihmeyer, A. H. Hendrickson
Abstract Not Available – First paragraph follows: One of the principal cultural practices in deciduous fruit orchards and vineyards is irrigation and its successful accomplishment frequently determines whether the grower makes a profit.
Ornamental crop production: Irrigation technics and dependable soil mixes basic to maximum production and minimum growing costs in industry
by O. R. Lunt
Abstract Not Available – First paragraph follows: Commercial production of ornamentals—cut flowers, potted plants, nursery stock—in California has an annual wholesale value of approximately $65 million or about one half the value of the combined citrus and avocado production of the state.
Factors in cotton irrigation: Quality of cotton fiber not materially affected by different irrigation treatments in experiments on three types of soil
by J. R. Stockton, L. D. Doneen
Abstract Not Available – First paragraph follows: Studies on the relationship between irrigation frequency and cotton yield have included various irrigation practices on a wide variety of soil types.
Water temperature in irrigation: Cold water damage to rice can be controlled by use of small unshaded warming basins before water is applied to fields
by Franklin C. Raney, Robert M. Hagan, Dwight C. Finfrock
Abstract Not Available – First paragraph follows: Rice yields have been reduced during recent years in northern California, because of cold water damage near field intake boxes.
Measurement of soil moisture: Accurate instruments for measuring soil moisture conditions practical means of determining proper timing of irrigation
by L. H. Stolzy, G. A. Cahoon, T. E. Szuszklewicz
Abstract Not Available – First paragraph follows: Instruments to measure soil moisture conditions—developed as research tools—eliminate much of the guesswork in the timing of irrigations and can indicate adequate penetration for a particular soil type and crop.
Water penetration of soils: Soil and water management practices important in coping with widespread problem of soil penetration by irrigation water
by D. W. Henderson, J. A. Vomocil
Abstract Not Available – First paragraph follows: The slow rate of water penetration into soils during irrigation is a serious problem, affecting—to some degree—a large portion of the major irrigated areas of California. In extreme cases there is a marked loss of production because it is difficult to supply crops with sufficient water even with frequent irrigation.
Moisture movement in soils: Experiments show moisture movement from one portion of soil to another and soil factors which influence that movement
by S. J. Richards, L. V. Weeks
Abstract Not Available – First paragraph follows: Elongation of Roots and moisture movement to roots influence the water uptake by plants.
Costs of irrigation water: Distance of transport, height of lift and timing of pumping operations influence costs of irrigation water to farmers
by L. J. Booher, M. R. Huberty
Abstract Not Available – First paragraph follows: The price farmers pay for irrigation water depends to a large extent on the cost of constructing and operating the engineering works needed to deliver the water to their farms.
Irrigation efficiency study: Increasing demands on water necessitate efficient irrigation practices to apply correct amount of water at proper time
by Jewel L. Meyer, Norman W. Ross, Verne H. Scott, Clyde E. Houston
Abstract Not Available – First paragraph follows: Economic production of practically all crops in California is dependent on irrigation.
Surface irrigation: Changing conditions and requirements affect water-application practices
by James C. Marr
Abstract Not Available – First paragraph follows: Methods of applying irrigation water to crops—by broad classification—are surface, subsurface and overhead or sprinkler systems.
Prefabricated ditch linings: Effectiveness of various types of liners in small irrigation ditches under study for control of seepage and vegetation
by Verne H. Scott
Abstract Not Available – First paragraph follows: Certain prefabricated materials used as linings in small irrigation ditches to control seepage and vegetation have shown considerable promise. Nevertheless, their use is limited—to some extent—by relatively high initial cost and questionable longevity under the variety of field conditions which exist on irrigated farms. However, increased production and availability of some of the new materials—such as plastics—are lowering costs to a point where replacement may be economical on a 1-3 year basis.
Sprinkler and lateral spacing: Distribution of irrigation water applied by sprinklers improved by proper spacings of sprinklers and laterals
by Verne H. Scott, Jack A. Corry
Abstract Not Available – First paragraph follows: Results of recent field tests indicate the extent wind—and sprinkler and lateral spacing—influence the uniformity of water distribution from medium capacity sprinklers.
Corrosion of aluminum pipe: Corrosion of unprotected aluminum irrigation pipe can lead to serious problem under one or more of several conditions
by Martin R. Huberty
Abstract Not Available – First paragraph follows: Corrosion—especially of the pitting type—of aluminum irrigation pipe has been especially severe in some areas of California.
Drainage cost survey: Earth moving in northern California estimated at 15c to 20c per cubic yard
by P. A. Boving
Abstract Not Available – First paragraph follows: The cost of draining farm land in the northern section of California varies with the location of the land, the ease of moving the soil, the demand for drainage in the area, and the availability of earth moving machinery, according to a recently started survey.
Drainage adiacent to a river: Investigation on use of pumped well for field drainage of river seepage conducted on farm in Sacramento delta area
by James N. Luthin, Verne H. Scott
Abstract Not Available – First paragraph follows: Pumping ground water for relief of drainage problems in agricultural lands is an established practice. However, there are many situations in California where pumping has not been used and where it might—or might not—be the solution to severe drainage problems costing farmers thousands of dollars annually in crops and soil damage.
Drainage in irrigated deserts: Efficient design, installation, and maintenance of drainage systems essential to avoid crop damage by high soil salinity
by Arthur F. Pillsbury
Abstract Not Available – First paragraph follows: Subsurface drainage is vital in irrigated desert areas and much research on the problem has been and is being done in the Coachella, the Imperial, and the Palo Verde valleys of California. The problems are complex, and not susceptible to simple easy solution.
The water rights situation: Increasing population and complexities of distribution of state's water supply comprise problem of major proportions
by Wells A. Hutchins