Acid soil amendments soil chemistry and plant growth

Grundon N.J., . (1994) Acid soil amendments soil chemistry and plant growth. [Proceedings Paper]

Calcitic dolomitic and magnesitic limestones gypsum cement CaCO3 and CaCl2H2O CaCl2 were added to an Australian acid soil in a laboratory rate trial to examine the solid and solution phase chemistry of the soil and the radicle growth of mungbean.Calcitic dolomitic and magnesitic limestone cement and CaCo3 were found to: 1 increase soil and soil solution pHpH and pHSS effective cation exchange capacity ECEC exchangeable Ca and Ca saturation Ca of the ECAC and with the exception of magnesitic limestones concentration of Ca in the soil solution Ca ss and 2 have little effect on soil and soil solution electrical conductivity EC and EC ss exchangeable K and Na and in the case of magnesitic limestone Ca ss and 3 depressed exchangeable Al Al saturation Al of ECEC and concentration of total Al Al sstotal and inorganic monomeric Al Al ssmono in the soil solution.Dolomitic and magnesitic limestone were found to increase exchangeable Mg and Mg concentration in the solution Mg ss but CaCO3 calcitic limestone and cement have little effect.Gypsum and CaCl2 were found to 1 have small or no effects on pH pH ss exchangeable Al Mg K and Na and Al ssmono2 greatly increase ECEC. EC EC ss exchangeable Ca Ca sat and Al ss total and 3 decrease Al sat of the ECEC.Both Ca ss and Mg ss were found to increase with dressings of CaCl2 Ca ss and Mg ss were not determined when gypsum was applied.Strong linear relationships were found between pH ss and pH EC ss and EC Al ssmono and Al sat or exchangeable Al Al sat or exchangeable Al Al sstotal and Al sat or exchangeable Al Ca ss and Ca sat or exchangeable Ca and Mg ss and Mg sat or exchangeable Mg.Dressing of CaCo3 calcitic and dolomitic limestones and cement improved root growth of mungbean while those of magnesitic limestones gypsum and CaCl2 generally depressed it or had no effect.Radicle growth appeared to be more closely related to solution phase chemistry than to solid phase chemistry of the soil.

Full text available from:

Abstract

Calcitic dolomitic and magnesitic limestones gypsum cement CaCO3 and CaCl2H2O CaCl2 were added to an Australian acid soil in a laboratory rate trial to examine the solid and solution phase chemistry of the soil and the radicle growth of mungbean.Calcitic dolomitic and magnesitic limestone cement and CaCo3 were found to: 1 increase soil and soil solution pHpH and pHSS effective cation exchange capacity ECEC exchangeable Ca and Ca saturation Ca of the ECAC and with the exception of magnesitic limestones concentration of Ca in the soil solution Ca ss and 2 have little effect on soil and soil solution electrical conductivity EC and EC ss exchangeable K and Na and in the case of magnesitic limestone Ca ss and 3 depressed exchangeable Al Al saturation Al of ECEC and concentration of total Al Al sstotal and inorganic monomeric Al Al ssmono in the soil solution.Dolomitic and magnesitic limestone were found to increase exchangeable Mg and Mg concentration in the solution Mg ss but CaCO3 calcitic limestone and cement have little effect.Gypsum and CaCl2 were found to 1 have small or no effects on pH pH ss exchangeable Al Mg K and Na and Al ssmono2 greatly increase ECEC. EC EC ss exchangeable Ca Ca sat and Al ss total and 3 decrease Al sat of the ECEC.Both Ca ss and Mg ss were found to increase with dressings of CaCl2 Ca ss and Mg ss were not determined when gypsum was applied.Strong linear relationships were found between pH ss and pH EC ss and EC Al ssmono and Al sat or exchangeable Al Al sat or exchangeable Al Al sstotal and Al sat or exchangeable Al Ca ss and Ca sat or exchangeable Ca and Mg ss and Mg sat or exchangeable Mg.Dressing of CaCo3 calcitic and dolomitic limestones and cement improved root growth of mungbean while those of magnesitic limestones gypsum and CaCl2 generally depressed it or had no effect.Radicle growth appeared to be more closely related to solution phase chemistry than to solid phase chemistry of the soil.

[error in script]

Item Type:	Proceedings Paper
Additional Information:	5 ills. 10 tables 29 refs.
AGROVOC Term:	SOIL AMENDMENTS
AGROVOC Term:	SOIL CHEMISTRY
AGROVOC Term:	PLANT GROWTH SUBSTANCES
AGROVOC Term:	ACID SOILS
AGROVOC Term:	AUSTRALIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16504

Actions (login required)

View Item