(Download Original for best viewing) Virtual panorama of Leafy Greens, operated by farmer Tom Heess in the Salinas Valley, California on Thursday, June 16, 2011. Leafy Greens grows row crops of lettuce, broccoli, cauliflower sweet peas and seed beans. He uses rotational crop plantings to control weeds and plant disease. When a plot of land is at rest, he plants a cover crop of barley and rye grass (foreground) because the roots hold the topsoil reducing erosion of the soil. He is converting his irrigation system from conventional sprinklers (operating field behind large tree in the center) to micro irrigation (on fields not seen here). Where one system produces runoff and erosion (right of center tree) of the soil; the other has little or no erosion, less maintenance, easy harvest and less water is needed. When seasonal rains produce runoff, the silt that flows with it is caught in sediment ponds (far left, left and right of center tree and right of field being watered). The ponds have grass, bushes and trees to hold the structure and allow the silt to settle. Spillways lead to holding ponds and eventually the Salinas River (tree line behind the three trees on right) a tributary of the Monterey Bay National Marine Sanctuary. So far, because of its design and efficiency, no water has made it to the river. USDA Photo Illustration by Lance Cheung.
May 4, 2014
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