Effect of two polymers on corn (Zea mays L.) growth and water economy in sandy soils |
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| Institution: | 1. Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology, Guangdong Provincial Engineering Research Center for Online Monitoring of Water Pollution, Institute of Analysis, Guangdong Academy of Sciences (China National Analytical Center, Guangzhou), Guangzhou 510070, China;2. College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730000, China;3. Guangdong Engineering Technology Research Center of Heavy Metal Pollution Control and Restoration in Farmland Soil, South China Institute of Environmental Sciences, MEE, Guangzhou 510535, China;1. Department of Economics, Monash University, Australia;2. Rasmuson Chair, University of Alaska Anchorage, United States;3. Department of Economics, Texas A&M University, United States;4. Department of Economics, St. Cloud State University, United States;5. Department of Economics, Hamilton College, United States |
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| Abstract: | Two polymers, Acryhope and Aqua- store-B, were incorporated separately in sandy soil at rates of 0.5 and 1.0%. Each polymer was uniformly incorporated at three different treatments, either in the whole, top half, or bottom half of soil contained in plastic pots. Corn grains (Cairo variety) were grown for 35 days. Incorporation of the polymers in the soil increased both fresh and dry weight production of corn but only Acryhope increased water use efficiency over the polymer-free control. Acryhope polymer added at 0.5% in the top half of the pots was the most promissing treatment considering corn fresh weight, dry weight and water use efficiency. On the other hand Aquastore-B bottom treatment at both rates of application induced a higher response in corn with respect to total fresh weight, total dry weight and water use efficiency. Regardless of rate of application and placement, both polymers reduced irrigation frequency which would reduce the labor cost of irrigation in sandy soils |
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