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Ebb and Flow System Versus Overhead Sprinkler and Microirrigation for Container-grown Woody Ornamental Production in Florida

Luis Carlos Nogueira

出版	University of Florida, 2005
URL	http://books.google.com.hk/books?id=oCz0jwEACAAJ&hl=&source=gbs_api

註釋

Peak crop evapotranspiration (ETc) occurred in July 2003 (6.09 mm day-−1, 4.91 mm day −1, and 2.98 mm day-−1, for ebb and flow, overhead sprinkler, and microirrigation system, respectively). The highest value of reference evapotranspiration (ETo) was 7.33 mm day-−1 in July. Ebb and flow system produced higher values of Kc (ranging from 0.71 to 1.04), followed by overhead sprinkler (from 0.29 to 0.85), and microirrigation (from 0.13 to 0.59). All of the nutrients (NH4, NO3 TKN, Total P, and Total N) analyzed in the reservoir water had very low concentrations. For nitrate, the maximum concentration was 1.9 mg L-−1. The total loads released from the reservoir to the environment during the study were 1.01 kg ha−1 (NH4), 7.21 kg ha-−1 (NO3), 14.48 kg ha-1 (TKN), 3.40 kg ha-1 (Total P), and 21.68 kg ha-1 (Total N).