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Jonas Christensen, Uffe Bjerre Lauridsen, Christian Andreasen, and Henrik Lütken

, an organic fertilizer experiment simulating the effect on PAN application of 15 and 30 kg·ha −1 , and a soil type experiment based on four soil types (sandy loam, gravel, fine and loamy sand). All experiments were conducted to examine response of the

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T.K. Broschat, D.R. Sandrock, M.L. Elliott, and E.F. Gilman

, Florida (lat. 26°5′3.51″N, long. 80°14’19.59″W). This turfgrass was established in 1981, but received no regular fertilization before this experiment. It was planted on a Margate fine sand soil (siliceous, hyperthermic Mollic Psammaquent). This soil has a

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Eugene K. Blythe and Donald J. Merhaut

density rating, contained at least 33% sand or soil + sand, never contained perlite, always contained coir or peatmoss, never contained compost, and contained either none or one of three of the coarser organic components. In contrast, group 1, with the

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Vickie Murphy, Teodoro Clase, Rosa A. Rodríguez-Peña, Francisco Jiménez-Rodríguez, Brett Jestrow, Chad E. Husby, and M. Patrick Griffith

the germination of palm and cycad (Cycadales) seeds ( Calonje et al., 2010 ; Murphy et al., 2013 ). Among the substrates that have proven most useful, aside from standard peat-based nursery mixes, are calcined clays and coarse sand. Fired ceramics of

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S.M. Scheiber, Richard C. Beeson Jr, and Sudeep Vyapari

equilateral triangular pattern, 30 cm apart, and mulched with shredded hardwood bark to a depth of 5 cm uniformly over the soil surface. Lysimeters were backfilled with native top soil (Apopka fine sand) to simulate landscape conditions. Treatments evaluated

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Lusheng Zeng, Jiayang Liu, Robert N. Carrow, Paul L. Raymer, and Qingguo Huang

content and sands are more prone to surface drying ( Müller and Deurer, 2011 ). On sand soils, SWR is universally attributed to hydrophobic organic matter coating on the sand particle surfaces and hydrophobic organic particulate matter from plant debris or

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Timothy K. Broschat

induced in several species of palms in sand culture ( Broschat, 1984 ; Bull, 1958 ) and has been observed on extremely P-deficient soils (P < 0.25 ppm) in south Florida ( Broschat and Elliott, 2009 ). Symptoms of P deficiency are uniform yellow

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Lenny Wells

two on Tifton loamy sand, a common agricultural soil in the southeastern United States. Materials and Methods The study was conducted in a 30-year-old microsprinkler-irrigated commercial ‘Stuart’ pecan orchard on a 15.2 m × 15.2 m spacing growing on

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Bahlebi K. Eiasu, Puffy Soundy, and J. Martin Steyn

Araya et al. (2006) and Motsa et al. (2006) . The pots were filled with either silica sand or sandy clay soil (52:8:38 coarse sand, silt, and clay, respectively). Volumetric water-holding capacity of the silica sand was 9.7% at field capacity and 3

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Timothy K. Broschat

at the University of Florida's Fort Lauderdale Research and Education Center (lat. 26°5′5.6″N, long. 80°14’34.6″W) having a 0° slope and a Margate fine sand soil was used for this study. This soil has a cation exchange capacity of 5.6 meq·100 g ( U