Irrigation shifts toward sprinklers, drip and microsprinklers
Authors AffiliationsS. Edinger-Marshall was formerly Staff Research Associate, Water Quality Program, Centers for Water and Wildlands Resources, and is presently a Lecturer in Natural Resources at Humboldt State University, Arcata, CA; J. Letey is Professor of Soil Physics, Department of Soil and Environmental Sciences, UC Riverside, Associate Director of the Centers for Water and Wildlands Resources, State Water Quality Coordinator for UCCE, and coordinator of the UC Salinity and Drainage Program/Prosser Trust.
Hilgardia 51(3):38-40. DOI:10.3733/ca.v051n03p38. May 1997.
From 1972 to 1995, gravity irrigation (flood, furrow and so on) has decreased by about 20% on an acreage basis, while sprinkler irrigation has increased by about 8% and microirrigation, including drip and microsprinklers, has increased by about 12%. These statewide estimates exclude rice acreage and are based on surveys commissioned by the California Department of Water Resources and the U.S. Bureau of the Census. Irrigation districts, UCCE farm advisors and specialists, the Natural Resource Conservation Service (NRCS) and the U.S. Bureau of Reclamation (USBR) were other sources of information. Different irrigation methods have different implications for crop yield, water conservation and water-quality protection. With the advent of chemigation and fertigation, future surveys should collect information about both irrigation and associated agricultural chemical practices.
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Challenge, promise for nation's “winter salad bowl”
A river runs through desert agriculture
Scientists pit parasitoids against leafhoppers
Forage demand rises as supplies wane: Growers face critical juncture in desert forage production
Appropriate market is key to success of dairying in Imperial Valley
Breeding resistant alfalfa holds promise for silverleaf whitefly management
Imperial Valley conditions limit Karnal bunt in wheat
Continuous ponding and shallow aquifer pumping leaches salts in clay soils