Soil adsorption interactions of band-injected anhydrous ammonia and potassium chloride fertilizers

R. C. Stehouwer, J. W. Johnson

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

The fertilizers were injected separately and simultaneously into two soils, a Hoytville silty clay loam (fine, illitic, mesic Mollic Ochraqualf) and an Avonburg silt loam (fine-silty, mixed, mesic Aeric Fragiqualf). Following incubation for various periods, in the Avonburg soil, very little interaction between the two fertilizer materials was observed; in the Hoytville soil, AA and KCl had little effect on NH 4 + distribution, compared with AA injected alone. Relative to KCl injected alone, simultaneous injection of AA and KCl in the Hoytville soil increased exchangeable K + and decreased fixed K + within 3.0cm of the injection point. Decreased K + fixation was attributed to preferential NH 4 + fixation blocking K + fixation; increased exchangable K + was attributed to pH-induced increases in cation-exchange capacity and to decreased K + fixation. -from Authors

Original languageEnglish (US)
Pages (from-to)1374-1381
Number of pages8
JournalSoil Science Society of America Journal
Volume55
Issue number5
DOIs
StatePublished - Jan 1 1991

All Science Journal Classification (ASJC) codes

  • Soil Science

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