+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Kinetics of ammonium sulphate transformation in soils

Agrochimica 36(4/5): 381-389

Kinetics of ammonium sulphate transformation in soils

The effects of N, Ca CO3, salinity and ESP on the nitrification of (NH4)2SO4 in sandy loam soils were investigated in incubation experiments under field capacity moisture conditions. Nitrification followed first order kinetics and the values of first order rate constant increased with increasing levels of N, C2CO3 and salinity. There was a decrease in NH4 and an increase in NO3 up to 42 days incubation. Recovery of mineral N decreased with time and increased rates of CaCO3, salinity and ESP.

Accession: 002646262

Related references

Mahendra Singh; Yadav, D.S., 1981: Transformation of urea and ammonium sulphate in different soils. The transformation of urea and ammonium sulfate in Ladwa sandy loam and Balsamand sand was studied in laboratory. Urea took at least 1 wk in sandy loam and 2 wk in sandy soild to hydrolyze completely. The process of hydrolysis was faster in finer...

Chu, C.L.; Wan, Z.C.; S U.Y.H., 1963: Investigation of the nitrogen-supplying regime of soils. II. The transformation of ammonium sulphate in rice soils & its effect on the nitrogen-supplying status of soil.. In pot experiments with rice soils supplied with (NH4)2SO4, the maximum amount of immobilized N snowed a positive correlation with the total organic-C (or N) content of soil. The fraction of N hydrolysable in 6 n HC1 increased with progressing imm...

El-Kholei, M.; Habib, M., 1982: Transformations of some ammonium forms in soils as affected by some cation systems. 1. Ammonium sulphate. Research bulletin Ain Shams University Faculty of Agriculture: 82 (1787)

Koch, D.E.V., 1943: The effect of ammonium sulphate and of ammonium phosphate as nicifos on the lateritic paddy soils of Peradeniya. Whereas the sulfate removes calcium and increases soil acidity there is practically no loss of calcium when ammonium phosphate fertilizers are applied. In spite of great textural differences there is a fairly constant proportion of Ca with respect...

Jones, R.W.; Hedlin, R.A., 1970: Ammonium, nitrite and nitrate accumulation in three Manitoba soils as influenced by added ammonium sulphate and urea. In 3 soils of acid, neutral and alkaline pH, changes in NH4, NO2 and NO3 ions were followed under laboratory conditions with or without added N as urea or (NH4)2SO4. Little difference in nitrification rate of the added N compounds was observed at...

Sen, Abhiswar, 1956: Comparative studies on absorption and retention of nitrogen from ammonium chloride and ammonium sulphate by Indian soils. The extent of absorption of ammoniacal nitrogen from ammonium chloride and ammonium sulphate in a form which is not lost from soils by leaching with water has been found to be more or less similar in most soils. The retention of N is much higher i...

Jensen, E.S.; Christensen, B.T.; Sorensen, L.H., 1989: Mineral-fixed ammonium in clay- and silt-size fractions of soils incubated with 15N-ammonium sulphate for five years. Four soils with 6, 12, 23, and 47% of clay were incubated for 5 years with 15N-labelled (NH4)2SO4 and hemicellulose. The incubations took place at 20 degrees C and 55% water-holding capacity. Samples of whole soils, and clay- (<2 mu m) and silt...

Verma, Mm, 1982: Retarding influence of phosphates and wheat-straw on nitrogen loss in soils treated with ammonium sulphate and ammonium nitrate. Journal of the Indian Chemical Society 59(4): 473-475

Brennan, R.F., 1993: Effect of ammonium chloride, ammonium sulphate, and sodium nitrate on take-all and grain yield of wheat grown on soils in south-western Australia. Five field experiments are described which measured the effect of three sources of nitrogen (N) fertilizer, applied at 45 kg N/ha, on the incidence of take-all and grain yield of wheat. The N fertilizers were ammonium sulphate, ammonium chloride,...

Anonymous, 1960: Efficacy of different sources of nitrogen, i e, urea and ammonium nitrate compared to ammonium sulphate, with and without phosphoric acid, in increasing the yield of cotton on B C soils under Tungabhadra project