Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Gilsizer Slough Project near South Township Rd, Yuba City, CA, Friday, August 28, 2015. The project features the installation of 40 high efficiency irrigation systems (50% water saving) and 40 vegetative cover crops and filter strips; and the adoption of nutrient and pest management practices by 40 producers. The field has berms that contain this plum orchard (not related to USDA projects) that normally uses flood irrigation to cover the soil with surface water pumped (seen) from the adjacent Gilsizer Slough. B
Department of Agriculture (USDA) Natural Resources Conservation Service (NRCS) Gilsizer Slough Project near South Township Rd, Yuba City, CA, Friday, August 28, 2015. The project features the installation of 40 high efficiency irrigation systems (50% water saving) and 40 vegetative cover crops and filter strips; and the adoption of nutrient and pest management practices by 40 producers. The field has berms that contain this plum orchard (not related to USDA projects) that normally uses flood irrigation to cover the soil with surface water pumped (seen) from the adjacent Gilsizer Slough. But, due to the critical drought conditions, less and less water was drawn over the past four years. No water could be drawn in 2015. A well was drilled to pump ground water from the aquifer below. Water is delivered to this and other fields by way of control valves, underground pipes and surface canals. A danger to flood irrigation berms is the tunnels of borrowing animals. This can cause accelerated berm erosion and escape of irrigation water. If micro irrigation were to be installed, both systems could remain in place and work cooperatively, such as with flood being used for pest control and micro irrigation to water the tree roots. A perennial clover cover crop has been planted between the rows of trees, and emerges on it’s own each year. USDA Photo By Lance Cheung.
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