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Water table management Water table management is recognized as an essential best management agricultural practice throughout North America, Europe and the Middle East. Due to its agronomic, environmental and economic benefits, water table management is a successful technique adopted by crop producers. Data from field studies demonstrate the many advantages of water table management to producers. Water table management system allows a crop producer greater flexibility with the management of the soil-water regime, lowering the water table during periods of high precipitation to remove excess water for better root aeration and optimum crop growth, and raising the water table with controlled drainage or subsurface irrigation when the crops need water during the summer months. This ability to adjust the water table level helps stabilize crop yield which is the biggest economic benefit of these practices. Yield increases come primarily from the increased moisture content of the soil. This available water is critical during the summer period when water-stress adversely affects grain yields. Water from the raised water table moves up to the plant roots by capillary rise. |
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