Tag: drip irrigation

Good Water Management: A Wise Business Decision

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Increasing water costs and water scarcity are becoming critical issues that are affecting the bottom lines for growers’ businesses. Whether these issues are the result of droughts, environmental concerns, or water regulations, the fact is that growers need to improve their water management techniques.

In a recent online article in Growing Produce, Michael Cahn highlights how growers in California are utilizing drip irrigation to improve their water management and crop quality. In one paragraph, Cahn writes, “In the Central Valley where surface water allocations can be limited during drought years, drip has allowed growers to farm more acres with less water. Besides saving water, drip provides more management options for growers. Under drip, tractor operations are less likely to be hampered by saturated furrows and application uniformity under drip is not affected by wind, which is common in the afternoon along the coast. Additionally, drip can reduce foliar disease pressure in crops by keeping leaves dry.”

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The Advantages of Closely Spaced Emitters

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Choosing the right drip tape emitter spacing can be more of an art than a science. This is because of the many variables that exist in each farming application, including tape placement, soil type, crop, plant population, soil and water salinity, tape quality and cost, etc. Fortunately, Cal Poly San Luis Obispo’s recent Drip and Micro Irrigation Design and Management Manual, published by the Irrigation Training and Research Center (ITRC) in 2007, provides a great deal of guidance for this important decision. In particular, the new manual discusses how closely spaced drip tape emitters can enhance salt management for seed germination, leach salts in permanent crops, and dilute soil salinity for salt sensitive crops. In addition, the manual highlights some of the agronomic and economic disadvantages of using widely spaced emitters.

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Benefits of Drip Irrigation on Potatoes

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Drip irrigation is a mainstream technology in dozens of other crop production systems throughout the world because it allows producers to evenly spoon-feed precious water and nutrients directly to every plant’s root zone despite variable soil conditions, undulating terrain, odd field dimensions or long lengths of run. But potato producers have been slower to adopt drip since there are significant changes in bed configuration, agronomic decisions, and planting and harvesting equipment that go along with this technology.

Despite these challenges, cutting-edge producers, suppliers, and researchers are coming up with viable answers in hopes of bolstering the potato industry against the inevitable vagaries of the market, economy, costs, and resource availability, and are discovering significant benefits in adopting drip irrigation for potato production.

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Drip Irrigation on Cotton

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Loyd Jordan is a 3rd generation farmer who cultivates 3,500 acres southwest of Lubbock in Terry and Lynn counties, Texas. He irrigates 1,250 acres with pivots and, most recently, 300 acres with subsurface drip irrigation. A neighbor had tried drip and said good things about water savings, getting increased yields on fewer acres, and how easy it was to apply fertilizers and control insects. So in 2004, Jordan installed 40 acres. He liked it so much that he installed an additional 120 acres in 2007, and then another 140 acres in 2009. Now he prefers drip to the pivots he has used for so many years.

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Drip Irrigation Scheduling

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Drip Irrigation scheduling is the process of deciding when to run the drip irrigation system, and for how long. It is a complex topic but of utmost importance because it influences whether the crop gets the right amount of water and nutrients, and whether valuable water is wasted to runoff or deep percolation. Irrigation scheduling combines data and agronomic expertise in that the irrigator must balance known facts such as weather, chemistry, stage of plant growth and farm cultural operations.

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