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Juan Carlos Melgar, Arnold W. Schumann and James P. Syvertsen

., 1996 ) and also fertilizer use efficiency ( Quiñones et al., 2003 ; Russelle et al., 1981 ). Because tree growth and yield can be limited by low nitrogen (N) supply ( Syvertsen and Sax, 1999 ), historical emphasis has been on applying sufficient N to

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Dan TerAvest, Jeffrey L. Smith, Lynne Carpenter-Boggs, David Granatstein, Lori Hoagland and John P. Reganold

Mullinix, 2008 ) and release N slowly, which can result in lower yields and low leaf and fruit tissue N levels compared with conventional apple systems ( Delate et al., 2008 ). Improving organic fertilizer-use efficiency is critical to increasing cost

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Bee Ling Poh, Aparna Gazula, Eric H. Simonne, Robert C. Hochmuth and Michael R. Alligood

In Florida, irrigation scheduling is becoming more important in vegetable production as a result of increasing restriction on use of water resources ( Dukes et al., 2010 ) and the need to improve fertilizer use efficiency ( Obreza and Sartain, 2010

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Catherine S. Fleming, Mark S. Reiter, Joshua H. Freeman and Rory Maguire

the effective root zone, they will not be absorbed by the plant and are lost from the production system, reducing fertilizer use efficiency. Machado and Oliveira (2005) reported that rooting depth of tomato in sandy soil was independent of three

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J.G. Williamson and E.P. Miller

increasing water and fertilizer use efficiencies while maintaining good vigor and high fruit production. Literature cited Brannen, P. Cline, B. Hale, F. Horton, D. Czarnota, M. Jennings, K. Mitchem, W. Monks, D. Lockwood, D. Krewer, G. Bellinger, B

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Marvin P. Pritts

different from other perennial fruit crops. The root system of strawberry is ≈10% to 20% of the total plant biomass ( May et al., 1994 ; Strik et al., 2004 ) and is not particularly efficient at acquiring N from the soil. Maximum fertilizer use efficiencies

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Jeff Million, Tom Yeager and Claudia Larsen

systems is needed. The purpose of this study was to compare capillary wick irrigation with overhead and subirrigation methods with regard to irrigation and fertilizer use efficiency. Our hypothesis was that capillary wick irrigation would be more efficient

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Kranti Macherla and Richard J. McAvoy

equally high fertilizer and water consumption. Greenhouse systems also enable producers to use sophisticated irrigation techniques to maximize water and fertilizer use efficiency. The most efficient systems deliver water directly to each plant and capture

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Luther C. Carson and Monica Ozores-Hampton

Enhanced efficiency fertilizers (EEF) are a group of fertilizers that reduce the risk of nutrient loss to the environment and subsequently increase fertilizer use efficiency ( Slater, 2010 ). This increase may be accomplished through maintaining

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Melissa L. Wilson, Carl J. Rosen and John F. Moncrief

San Diego, CA Simonne, E.H. Hutchinson, C.M. 2005 Controlled release fertilizers for vegetable production in the era of best management practices: Teaching new tricks to an old dog HortTechnology 15 36 46 Trenkel, M.E. 1997 Improving fertilizer use