Applied and Environmental Soil Science / 2012 / Article / Tab 4 / Research Article
Nitrate-Nitrogen Leaching from Onion Bed under Furrow and Drip Irrigation Systems Table 4 Date of irrigation, total amount of water applied (TWA), initial
and final
volumetric water content, rooting depth (RD), available water content (AWC), amount of leaching (LA), depth of leaching (LAD), cumulative leaching below the rooting zone depth (CLRBRZD), and depth of water front (DWF) during two onion growing seasons (2006–09) in a furrow-irrigated onion field in NM.
Date of Irrigation TWA cm
cm3 cm−3
cm3 cm−3 RD cm AWC cm LA cm LAD cm CLRBRZD cm DWF cm 11/2/2006 7.76 0.11 0.31 10.0 Bring root zone to field capacity 11/17/2006 4.39 0.23 0.30 10.0 0.69 3.71 12.0 12.0 22.0 11/29/2006 4.39 0.24 0.30 10.0 0.67 3.72 12.0 24.0 34.0 12/15/2007 4.39 0.24 0.31 10.0 0.71 3.69 11.9 35.9 46 1/8/2007 4.09 0.23 0.31 10.0 0.77 3.32 10.7 46.6 57 2/9/2007 3.85 0.23 0.31 10.0 0.75 3.10 17.2 63.8 74 2/23/2007 3.55 0.24 0.30 10.0 0.57 2.98 16.5 80.4 90 3/6/2007 4.20 0.21 0.32 10.0 1.05 3.15 17.5 97.9 108 3/16/2007 4.14 0.22 0.32 12.7 1.28 2.86 15.9 113.7 124 3/27/2007 5.12 0.20 0.31 17.8 1.96 3.16 17.6 131.3 141 4/5/2007 4.70 0.22 0.32 22.9 2.29 2.41 13.4 144.7 155 4/13/2007 4.14 0.20 0.32 27.9 3.38 0.76 4.2 148.9 159 4/20/2007 4.91 0.21 0.31 30.5 3.05 1.86 10.4 159.3 169 5/12/2007 5.04 0.21 0.32 35.6 3.91 1.13 6.3 165.6 176 5/25/2007 4.45 0.21 0.31 38.1 3.81 0.64 3.5 169.1 179 6/1/2007 6.12 0.20 0.31 45.7 5.02 1.10 6.1 175.2 185 6/7/2007 6.10 0.21 0.31 45.7 4.63 1.47 8.2 183.3 193 6/19/2007 6.80 0.20 0.31 45.7 5.03 1.77 9.8 193.2 203 6/29/2007 6.78 0.19 0.30 45.7 4.97 1.81 10.1 203.2 213 2008-2009 9/25/2008 5.8 0.12 0.33 10.0 2.10 3.66 11.8 10 10/10/2008 4.20 0.22 0.31 10.0 0.89 3.26 10.5 10.5 21 10/24/2008 3.24 0.24 0.29 10.0 0.57 2.67 8.6 19.1 29 11/14/2008 4.59 0.23 0.30 10.0 0.71 3.88 12.5 31.6 42 11/21/2008 4.15 0.24 0.32 10.0 0.77 3.38 10.9 42.5 53 12/5/2008 3.24 0.22 0.30 10.0 0.75 2.49 8.0 50.6 61 12/18/2008 3.31 0.23 0.30 10.0 0.67 2.64 8.5 59.1 69 1/9/2009 3.20 0.22 0.31 10.0 0.85 2.35 13.1 72.1 82 2/11/2009 3.12 0.22 0.30 12.7 1.03 2.09 11.6 83.8 94 3/6/2009 4.58 0.21 0.31 17.8 1.78 2.80 15.6 99.3 109 3/20/2009 4.66 0.21 0.31 22.9 2.29 2.29 12.7 112.1 122 3/27/2009 4.01 0.23 0.32 27.9 2.54 2.12 11.8 123.8 134 4/3/2009 4.81 0.22 0.32 30.5 3.05 0.96 5.3 129.2 139 4/9/2009 5.49 0.22 0.32 35.6 3.56 1.25 7.0 136.1 146 4/17/2009 5.91 0.20 0.30 38.1 3.81 1.68 9.3 145.5 155 4/24/2009 6.20 0.21 0.32 45.7 5.02 0.88 4.9 150.4 160 5/1/2009 6.78 0.22 0.33 45.7 5.08 1.12 6.2 156.6 167 5/8/2009 5.62 0.23 0.31 45.7 3.66 3.12 17.3 173.9 184 5/15/2009 6.53 0.22 0.33 45.7 5.03 0.59 3.3 177.2 187 5/27/2009 5.44 0.19 0.31 45.7 5.49 1.04 5.8 183.0 193 6/4/2009 5.3 0.20 0.31 45.7 4.97 0.47 2.6 185.6 196
