The Effect of pH, Sulfate and Phosphate Concentrations on the Adsorption of Sulfate by Soils

Kamprath, E. J.; Nelson, W. L.; Fitts, J. W.

doi:10.2136/sssaj1956.03615995002000040005x

Cited by 97 publications

(38 citation statements)

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“…The pHs range (4.6 to 6.6) for the Ap horizon was sufficiently broad to include ranges normally recommended for cultivated crops. As soils become more acid there is an increasing tendency to retain absorbed sulfur (3,6,12,13).…”

Section: Resultsmentioning

confidence: 99%

Effects of sulfur application on yield and composition of soybeans and soil sulfur

Brown

Thom

Wall

1981

Communications in Soil Science and Plant Analysis

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Soybeans (Wayne cultivar) were grown on Mexico silt loam at four soil applied S levels over 4 years. The innate sulfur level of this soil appeared to be adequate for optimum grain yield. The additional sulfur had no effect on grain yield, oil concentration, essential amino acids and sulfur concentration in the seed. Sulfur extraction from profile cores after the study indicated movement of sulfur from the Ap into the upper B horizon over the course of the study. The soil sulfur test was improved when pHs was included in an expression for the Ap horizon.

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Section: Resultsmentioning

confidence: 99%

Effects of sulfur application on yield and composition of soybeans and soil sulfur

Brown

Thom

Wall

1981

Communications in Soil Science and Plant Analysis

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“…When PO 4 was added, SO 4 desorption was strongly promoted as was, to a lesser extent, that of oxalate. Most authors are of the opinion that the mechanisms of SO 4 and PO 4 adsorption are similar, and that both ions compete for the same sorption sites (Kamprath et al, 1956;Couto et al, 1979;Pasricha & Fox, 1993). Although adsorbed SO 4 does not compete strongly with PO 4 , there is probably some competition for sorption between these anions Figure 2.…”

Section: Effect Of Salt Types On Soil P Fractionsmentioning

confidence: 99%

Wheat (Triticum aestivumL.) response to combined organic and inorganic phosphorus fertilizers application under saline conditions

Zahoor

Honna

Yamamoto

et al. 2007

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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Phytoavailability of inorganic phosphorus (Pi) reduces within a few hours of application while continuous application of organic phosphorus (Po) has gained the attention of environmentalists. Therefore, continuous application of either Pi or Po would not be a desirable approach. In addition, the ameliorative effect of phosphorus (P) on plant growth under a saline environment has broadened the scope of this hazard. However, our knowledge about P release from amended soils and plant uptake under Cl or SO 4 salt saturated soils is very limited. Therefore, the current study was designed with two objectives: 1) to evaluate the effect of Cl and SO 4 salts on inorganic P release/uptake; 2) to evaluate wheat response to a new combined application of Po'/Pi sources under a saline environment. In a greenhouse study, soil was salinized by adding NaCl and Na 2 SO 4 salts and P was amended at the rate of 100 kg ha (1 in the form of composted livestock manure (Po), KH 2 PO 4 (Pi) and Po (50 kg ha (1 )'/Pi (50 kg ha (1 ) (Pc) along with a control. Irrespective of salt types, application of P sources enhanced plant growth and P uptake compared to the control. Combined P sources (Pc) gave higher shoot and root dry matter than P source applied alone. Chloride salt suppressed shoot and root dry matter more severely than SO 4 salt. Phosphorus uptake and recovery (%) increased in pots amended with Pc. Chloride salt was also more toxic for plant P uptake and recovery than SO 4 salt. In the laboratory experiment, soils were amended with the same P sources. After first extraction with NaCl and Na 2 SO 4 , biologically available P (extracted with NaHCO3), Fe-and Al-bound P (extracted with NaOH) and stable Ca-bound P (extracted with HCl) fractions were measured. It was observed that SO 4 salt released higher amounts of labile P fractions (salt and NaHCO 3 extracted P) than Cl. This study clearly showed that Cl is more toxic for plant growth and P uptake, while SO 4 has higher P desorption capacity. It is suggested that Pc would not only best meet wheat P requirements under saline conditions, but will also help to reduce the load of waste application on agricultural soils.

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“…Phosphate has often been found to decrease the retention of sulfate. Kampraht, Nelson and Fitts (1956) consider that this results from the sorption mechanism of the same kind. But Ensminger (1954) supposes that it is caused by the sorption on same compounds.…”

Section: Discussionmentioning

confidence: 99%

Leaching of plant nutrients from cultivated soils: II Leaching of anions

Hartikainen

1978

AFSci

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Abstract. Leaching of anions from three soil samples (sand, fine sand and sandy clay) representing the plough layer was studied in a lysimeter experiment under conditions corresponding to the fallow. The effect of fertilization and that of acid irrigation solution on the amounts of anions washed out was also studied.The extraction of anions from different soils seems to correspond to that of cations; the coarser the soil, the higher the nutrient losses. This was valid for nitrate and sulfate, but the amounts of phosphate extracted were insignificant. The sum of the anion equivalents leached was lower than the respective sum of cations in all the leachates indicating that a part of the cations was leached as bicarbonate.The physical properties of the soil regulating the infiltration of water affect the movement of anions bonded non-specifically. The anions in pores of soil aggregates seem to be protected against leaching to a certain degree. However, the biological value of an anion is an important factor. It seems that microbiological processes may decrease the leaching losses of nitrate.

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The Effect of pH, Sulfate and Phosphate Concentrations on the Adsorption of Sulfate by Soils

Cited by 97 publications

References 0 publications

Effects of sulfur application on yield and composition of soybeans and soil sulfur

Effects of sulfur application on yield and composition of soybeans and soil sulfur

Wheat (Triticum aestivumL.) response to combined organic and inorganic phosphorus fertilizers application under saline conditions

Leaching of plant nutrients from cultivated soils: II Leaching of anions

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