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Abstract

Adaptation to upland soils was investigated in a diallel study involving progeny of 4 blueberry (Vactinium) clones consisting of 1 highbush blueberry (V. corymbosum L.) clone and 3 interspecific hybrids. Both general and specific combining ability were significant. Seedling progenies of NJUS 11 (V. ashei × V. atrococcum) and US75 (V. darrowi × V. corymbosum) grew well on an upland soil. Although not included in the diallel crosses, NJUS 64 (V. myrsinites × V. angustifolium) progenies also grew well on upland soil.

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( Sparks, 2005 ). Upland soils of the southeastern U.S. Coastal Plain, by contrast, are highly acidic, have relatively low cation exchange capacity, and are naturally low in various macronutrients and micronutrients required for pecan growth and production

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greenhouse screening procedures have mainly been used to identify blueberry individuals or populations more tolerant to upland soils ( Korcak, 1986 ; Korcak et al., 1982 ) or higher pH ( Finn et al., 1987 , 1993a , 1993b ). These procedures might be useful

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development interval. V. ashei is vigorous, high-yielding, adaptable to upland soils, and many cultivars have a tendency toward “suckering” (spreading by underground shoots). Its fruit are relatively large, as are the seeds, and it can be excessively seedy

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.I. Houssain, M.B. Schmidhalter, U. 2005 Carbon and nitrogen mineralization in different upland soils of the subtropics treated with organic materials Soil Biol. Biochem. 37 1507 1518 Koller, M. Alfödi, T. Siegrist, M. Weibel, F. 2004 A comparison of plant and

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cultivated and grown commercially in the southeastern United States. The loamy bottomland ridges to which pecans are adapted typically consist of well-drained soils high in organic matter ( Sparks, 2005 ). By contrast, upland soils of the southeastern United

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. Plant Anal. 17 215 236 He, Y.F. Yin, B. Cai, G.X. Jin, X.X. Li, H.X. 2005 Comparison of nitrogen mineralization and nitrification in upland soils grown with vegetables and food crops Chinese J. Soil Sci. 36 41 44 Institute of Soil Science of Academia

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. elliottii has been used to a limited extent in blueberry breeding programs in North Carolina and Florida. The intent has been to obtain cultivars that incorporate the ability of V. elliottii to grow on drought-prone upland soils that have low organic

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pepo L.) ( Reiners and Riggs, 1997 ) have variable or no yield response to N fertilization. Johnson et al. (1973) found cucumber yield response to N rate to be variable depending on soil type, where the greatest response was on eroded, upland soils

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, the occurrence of salt-affected soils in pecan orchards is common in upland soils irrigated with moderately saline water (1 to 2 dS·m −1 ) and in alluvial soils with poor drainage or inadequate permeability ( Miyamoto and Storey, 1995 ). High

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