지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
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With the increasing cultivation of acid-loving plants such as blueberries, the artificial acidification of soils is frequently required. This research was conducted to determine the application rates of elemental sulfur (S) required in the soil acidification for blueberry cultivation. Laboratory incubation experiment was conducted to acidify three arable soils (pH 6-7) of different texture to pH 4.5-5.0 by the addition of varying amounts of elemental S. All rates of elemental S addition reduced soil pH, although the efficacy of acidification was related to the application rate and soil characteristics. pH reduction was slow in sandy loam soil, and the final equilibrium pH was obtained after 60, 43, and 30 days of incubation in sandy loam, loam, and silty clay, respectively. Although the final pHs obtained after 93 days of incubation were not significantly different among the three soils, the equilibrium pH was relatively higher in soil of higher clay content in the application rates of 1.5-2.0 g S kg<SUP>-1</SUP> soil. The estimated amounts of elemental S required in lowering pH to 4.5-5.0 were 0.59-1.01, 0.67-1.03, and 0.53-0.88 g S kg<SUP>-1</SUP> for sandy loam, loam, and silty clay, respectively. The lowest estimated amount of elemental S in the acidification of silty clay soil was attributable to the low organic matter content. For clay soils containing optimum level of organic matter, the application rates of elemental S should be much higher than those values estimated in this research. Soil acidification did not significantly increase the available concentrations of Ca, Mg and K. Extractable Cu and Zn was not greatly affected by the acidification, but extractable Fe, Mn, and Al in the acidified soils were higher than those found in non-acidified soils. Such increases in solubility are attributable to the dissolution of oxides and hydroxides of the elements.
목차
Introduction
Materials and Methods
Results and Discussion
References
참고문헌 (29)
참고문헌 신청
Barrow, N.J / 1960 / A comparison of the mineralization of nitrogen and of sulphur from decomposing organic materials / Aust. J. Agric. Res 11:960~969
Bryla, D.R / 2007 / Effects of cultivar and plant spacing on the seasonal water requirements of highbush blueberry / J. Am. Soc. Hort. Sci 132:270~277
Garey, C.L / 1952 / Evaluation of certain factors involved in increasing manganese availability with sulfur / Soil Sci. Soc. Am Proc 16:173~174
Germida, J.J / 1993 / Factors affecting the oxidation of elemental sulfur in soils / Fert. Res 35:101~113
Harmer, P.M / 1944 / The effect of varying the reaction of organic soil on the growth and production of the domesticated blueberry / Soil Sic. Soc. Am. Proc 9:133~141
Bryla, D.R / 2007 / Effects of cultivar and plant spacing on the seasonal water requirements of highbush blueberry / J. Am. Soc. Hort. Sci 132:270~277
Garey, C.L / 1952 / Evaluation of certain factors involved in increasing manganese availability with sulfur / Soil Sci. Soc. Am Proc 16:173~174
Germida, J.J / 1993 / Factors affecting the oxidation of elemental sulfur in soils / Fert. Res 35:101~113
Harmer, P.M / 1944 / The effect of varying the reaction of organic soil on the growth and production of the domesticated blueberry / Soil Sic. Soc. Am. Proc 9:133~141
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UCI(KEPA) : I410-ECN-0101-2014-521-000706048