The effect of surface applied soil amendments on barley root growth in an acid subsoil

Wright, Robert J.; Hern, J. L.; Baligar, V. C.; Bennett, O. L.

doi:10.1080/00103628509367595

Cited by 33 publications

(18 citation statements)

References 16 publications

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“…Hem et al (1982) showed that a synthetic chelating agent, EDT A, mobilized significant amounts of Al to a depth of 60 cm in leached soil columns. Also working with soil columns, Wright et al (1985) obtained maximum root growth and rooting depth with manure treatments. In the same experiment, lime and gypsum treatments were no better than the check.…”

Section: A Modifying the Soilmentioning

confidence: 99%

Soil Chemical Factors Limiting Plant Root Growth

Foy¹

1992

Advances in Soil Science

328

162

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Section: A Modifying the Soilmentioning

confidence: 99%

Soil Chemical Factors Limiting Plant Root Growth

Foy¹

1992

Advances in Soil Science

328

162

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“…The idea that gypsum would be able to substitute for lime has been proposed and discussed since the 1930's (4) and has been shown to be useful in reducing ths effects of the subsoil acidity syndrome (5,6) but there have also been reports of indifferent crop responses to gypsum (7,8), and of negative effects on magnesium (Mg) and potassium (K) availability in soil (9). Reduction in the availability of Mg and K down the soil profile was also observed with surface application of gypsum (10).…”

Section: Introductionmentioning

confidence: 98%

Effect of gypsum on soil potassium and magnesium status and growth of alfalfa

Syed-Omar

Sumner

1991

Communications in Soil Science and Plant Analysis

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Though surface-applied gypsum has been shown to be useful in reducing the subsoil acidity syndrome, excessive application could reduce the availability of other essential cations in soil. This study was conducted to determine the effects of surface-applied gypsum on the availability of potassium (K) and magnesium (Mg) in field soils. Field experiments were conducted on Davidson and Tifton series soils in the southeastern United States with 6 main ameliorant treatments (0, 2, 5, and 10 t gypsum/ha, soil profile mixed to 1 m without lime incorporation and, mixed with lime to 1-m depth), and 2 levels of Mg (0 and 100 kg Mg/ha) and 4 levels of K (0, 125, 250, and 375 kg K/ha) in a split-split plot configuration. Alfalfa was grown on the Tifton soil and sorghum on the Davidson soil. Yields of alfalfa and sorghum increased with 2 t gypsum/ha but were adversely affected above 5 t gypsum/ha. Gypsum amendment at 2 t/

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“…A capacidade de compostos orgânicos de baixo peso molecular para solubilizar, mobilizar e reduzir a toxidez de Al é bem estabelecida (Wright et al, 1985;Hue et al, 1986;Pohlman & McColl, 1986;Hue & Amien, 1989). No entanto, a possibilidade de esses compostos mobilizarem o Ca tem recebido pouca atenção.…”

Section: Introductionunclassified

Dinâmica de íons em solo ácido lixiviado com extratos de resíduos de adubos verdes e soluções puras de ácidos orgânicos

Franchini¹,

Miyazawa

Pavan

et al. 1999

Pesq. agropec. bras.

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Termos para indexação: complexos orgânicos, mobilidade de cátions, cálcio, alumínio. DYNAMIC OF IONS IN ACID SOIL LEACHED WITH GREEN MANURE RESIDUES EXTRACTS AND PURE SOLUTIONS OF ORGANIC ACIDSABSTRACT -The influence of green manure residues addition in the dynamic of ions in acid soils is not well known. In this study, ion mobility in a sample of the Bw horizon of an Dark-Red Latosol (Oxisol), leached with citric and succinic acid pure solutions and with aqueous residue extracts of black oats (Avena strigosa) and oil seed radish (Raphanus sativus) were evaluated in soil columns (5, 10, 20, and 40 cm long by 4 cm diameter). After the solutions and extracts passed through the soil columns, the following parameters were determined: solubles contents of Ca s , Mg s , K s , Al st (total), Al so (organic), Al sm (monomeric) and dissolved organic carbon. In soil, the parameters evaluated were the exchangeable contents of Ca ex , Mg ex , K ex , and Al ex and pH (CaCl 2 ). Citric and succinic acids increased Al st and Ca s contents, respectively, resulting in decreasing exchangeable fractions of these elements in soil. Black oats extract was more effective to extract Ca ex and oil seed radish to extract Al ex . The decrease in Ca ex and Al ex was followed by an increase in K ex . Organic complexes formed with low molecular organic ligands and Ca s and Al ex were suggested to play a role in the mobility of ions in subsoils of acid soils after the addition of both crop residues extracts and pure organic acid solutions.

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The effect of surface applied soil amendments on barley root growth in an acid subsoil

Cited by 33 publications

References 16 publications

Soil Chemical Factors Limiting Plant Root Growth

Soil Chemical Factors Limiting Plant Root Growth

Effect of gypsum on soil potassium and magnesium status and growth of alfalfa

Dinâmica de íons em solo ácido lixiviado com extratos de resíduos de adubos verdes e soluções puras de ácidos orgânicos

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