Laboratories (Camilla, GA) to perform a standard nutrient analysis. Based on the nutrient concentration in the hydroponic solution, the nutrient uptake efficiency of roots (milligrams nutrient per kilogram of root) was calculated for HLB-F and HLY-F trees using
. Before drying, root volumes were obtained following the methods of Harrington et al. (1994) . Dried samples were sent to A&L Great Lakes Laboratories, Inc. (Fort Wayne, IN) for nutrient analysis. Measurements. Water-use efficiency (WUE) was the quotient
tree, and total water supply was ≈4000 L per tree per annum. All trees received consistent and standard fertilizer applications with the rate of application (kg·ha −1 ) based on annual leaf mineral nutrient analysis and a target fruit yield of between
; HACH, Loveland, CO). Nutrient analysis was conducted by ICP-OES for P, K, Ca, and Mg. For dry weight measurements, the aboveground portions of plants were harvested and handwashed of substrate at the initiation and termination of the experiment. Plant
replicates in the high tunnel and adjacent open field settings. Experimental subplots measured 5.5 m 2 . Amendments were applied at a rate of 112 kg N/ha, 49.3 kg P/ha, and 83 kg K/ha in 2011 based on initial soil nutrient analysis and nutrient requirements
.23, 0.24 ± 0.18, and 0.56 ± 0.35, respectively. At 17 WAP, plant quality evaluations were completed by six volunteers, foliar tissue samples were collected for nutrient analysis, and shoots of all plants were harvested to determine dry weight
planting year to maturity ( Hart et al., 2006 ). Adjustments of fertilizer N and other macronutrients and micronutrients are based on the periodic soil nutrient analysis, observations of plant growth, and annual leaf tissue analysis ( Bolda et al., 2012
were chosen randomly for flower diameter measurement. The average of the three measurements was recorded. Leaves from the terminal 5 to 8 cm of each plant shoots were harvested for nutrient analysis ( Issac and Johnson, 1998 ). Immediately after
75 g less at 1.4 mS·cm –1 compared with 1.8 mS·cm –1 , which had a tipburn rating of 2.7. Dry weight was 2 g less at 1.4 mS·cm –1 compared with 1.8 mS·cm –1 . Based on the tissue nutrient analysis of ‘Green Butter’, macronutrients N ( P < 0
. Because soil water samples were collected in PVC tubes, these samples were not analyzed for pesticides due to a concern for adsorption losses. Sample preparation and analysis. Samples for nutrient analysis were collected in 250-mL polyethylene bottles