The efficiency of dolomitic limestone, basic slag and peat ash as liming agents, and as calcium and magnesium sources for turnip rape

Jokinen, Raili

doi:10.23986/afsci.72117

Cited by 2 publications

(3 citation statements)

References 4 publications

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“…Further, the comparison of present results with those obtained by Jokinen (1982) with the same soils without Mg addition supports the conclusion that the growth-promoting effect of basic slag and peat ash would be attributable to their impact on P resources rather than to their role as Mg or Ca sources.…”

Section: Discussionsupporting

confidence: 85%

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Peat ash and basic slag as substitutes for lime with reference to phosphorus uptake by turnip rape

Hartikainen

1984

AFSci

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Abstract. The effect of peat ash and basic slag on the P supply to turnip rape was compared with that of calcitic and dolomitic limestone in a pot experiment performed with two acid mineral soils of pH 4.8 (CaCl 2 ). Changes in soil properties induced by various liming agents were investigated in an analogous incubation test, and the results served to interpret the observations made in the pot experiment.When the liming materials were added in equal quantities, their ability to reduce soil acidity decreased in the sequence: calcite > dolomite > basic slag > peat ash. However, their growth-promoting effect appeared only in the second year and was not related to the neutralizing ability. In the muddy fine sand soil (3.0 % of org. C) poor in water-soluble P, the peat ash and basic slag were equally effective as calcite in increasing the dry matter yields. In the fine sand soil (6.4 % of org. C), the basic slag and dolomite significantly increased the second yield.The efficiency of peat ash and basic slag seemed to be attributable to their positive impact on P resources. In fact, peat ash served as a slowly acting P-fertilizer rather than as a liming agent. In the basic slag treatment, an increased silicate concentration obviously resulted in desorption of P. In the P-deficient muddy fine sand, the peat ash was equivalent to calcite in intensifying the P uptake. On the other hand, in the fine sand soil where the polymerization of Al due to an increased pH obviously resulted in enhanced P retention, the P uptake was higher in the soils treated with peat ash and basic slag than in those amended with conventional liming agents.

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Section: Discussionsupporting

confidence: 85%

“…The liming agents contained various P fractions, analyzed by a slightly modified Chang and Jackson method according to Hartikainen (1979) The other properties have been reported by Jokinen (1982).…”

Section: Methodsmentioning

confidence: 99%

Peat ash and basic slag as substitutes for lime with reference to phosphorus uptake by turnip rape

Hartikainen

1984

AFSci

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“…The experiment was carried out with four replicates. It has been described in more detail by JOKINEN (1982).…”

Section: Methodsmentioning

confidence: 99%

Effect of liming on phosphorus in two soils of different organic matter content: II Changes in the availability of phosphorus to turnip rape (Brassica campestris)

Hartikainen

1983

AFSci

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The effect of calcitic limestone treatments on the availability of P to turnip rape was studied with two acid mineral soils of pH 4.8 (CaCl2) in a pot experiment during two growing seasons. The soil reactions of a connected incubation test served to interpret the results obtained in the pot experiment. The experimental soils represented soil types of dissimilar responses to liming in regard to P availability. In the muddy fine sand (3 % of org. C), initially poor in easily soluble P, liming enhanced plant growth as well as P uptake in the second year. However, in spite of intensified P removal, the final content of water- soluble P in the limed soils was not lower than in the unlimed ones. This was assumed to demonstrate an augmented availability of P. Also in the fine sand soil (6.4 % of org. C), rich in water-soluble P, liming slightly improved growth of the second harvest in the pots not treated with P, but it did not affect P removal. In the pots amended with P, on the contrary, liming had no effect on the dry matter yields, but it tended to depress P withdrawal. Nevertheless, all the limed soils contained finally less water-soluble P than the unlimed ones, which suggests a diminished availability. The results of the pot experiment demonstrate that a relatively low soil pH does not necessarily limit growth of turnip rape, provided no nutrient deficiency or metal toxicity occurs.

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The efficiency of dolomitic limestone, basic slag and peat ash as liming agents, and as calcium and magnesium sources for turnip rape

Cited by 2 publications

References 4 publications

Peat ash and basic slag as substitutes for lime with reference to phosphorus uptake by turnip rape

Peat ash and basic slag as substitutes for lime with reference to phosphorus uptake by turnip rape

Effect of liming on phosphorus in two soils of different organic matter content: II Changes in the availability of phosphorus to turnip rape (Brassica campestris)

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