Effects of biotechnology byproducts and organic acids on nitrification in soils

Karmarkar, S. V.; Tabatabai, M. A.

doi:10.1007/bf00337196

Cited by 17 publications

(13 citation statements)

References 15 publications

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“…Karmarkar and Tabatabai (1991) observed an accumulation of nitrite in calcareous soil (pH = 7. 6; CaCO3 equivalent = 12%) after the incorporation of formic, acetic and fumaric acids.…”

Section: Discussionmentioning

confidence: 99%

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Activity of nitrifying populations in grassland soil polluted by polychlorinated biphenyls (PCBs)

Dušek

1995

Plant Soil

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“…Karmarkar and Tabatabai (1991) observed an accumulation of nitrite in calcareous soil (pH = 7. 6; CaCO3 equivalent = 12%) after the incorporation of formic, acetic and fumaric acids.…”

Section: Discussionmentioning

confidence: 99%

“…Rice and Pancholy, 1973), pesticides (Ray, 1983) or organic; acids (Karmarkar and Tabatabai, 1991). Furthermore, nitrification is known to be sensitive to heavy metal toxicity (e.g.…”

Section: Introductionmentioning

confidence: 99%

Activity of nitrifying populations in grassland soil polluted by polychlorinated biphenyls (PCBs)

Dušek

1995

Plant Soil

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“…Any stimulation of nitrifying activity is undesirable because of possible losses of nitrogen from the soil (Laanbroek and Gerards, 1991). organic acids: (Karmarkar and Tabatabai, 1991); heavy metals: (Liang and Tabatabai, 1978); NH3 formed from ammonium ions: (Flowers and O'Callaghan, 1983). An accumulation of nitrite was observed predominantly in alkaline, calcareous soils, probably due to the higher sensitivity of Nitrobacter populations to various stress environmental factors: e.g.…”

Section: Introductionmentioning

confidence: 99%

The effect of cadmium on the activity of nitrifying populations in two different grassland soils

Dušek

1995

Plant Soil

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The effect of a laboratory addition of 10, 100 and 500 mg Cd kg~.~ soil on ammonification and nitrification was studied using soil samples of two unpolluted grassland soils. Calcareous and non-calcareous soil were selected for this purpose. Various parameters of nitrifying activity were investigated simultaneously: activity during long-term laboratory incubations in the presence and absence of a substrate, mineralization potentials, and potential activity of both ammonium and nitrite oxidizers during short-term incubations in soil slurries. Cadmium was added as aqueous CdC12.Additions of both 100 and 500 mg Cd kg~r ~ soil doses significantly lowered the ability of both soils to nitrify 100 ~g added NH+-N -l g,~y soil as a substrate, which was reflected in a decreased rate of nitrate formation (maximum inhibition reached 60% in the calcareous soil and 45% in the non-calcareous soil). Furthermore, these two concentrations of Cd caused an abnormal accumulation of nitrite immediately after incorporation, particularly in -1 the calcareous soil. The addition of 10 mg Cd k g~ ~oil intensified N-mineralization in both soils, probably as a consequence of a higher concentration of readily metabolized substrate originating from killed bacteria or fungi. An excess of nitrate was then formed as a final step. The harmful effect of cadmium was more pronounced in calcareous soil, probably due to the higher sensitivity of nitrite-oxidizers in these soil samples.

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“…By using seven biotechnology by-products produced in Iowa, Zhu et al (1995) found that application of these by-products increased dry matter and N yield of corn with increasing the rate of N in the by-products applied up to 500 mg of total N per kg soil. The study by Karmarkar and Tabatabai (1991) also showed that addition or production of organic acids from biotechnology by products application in soil affected the microbial dynamics, leading to significant changes in rate of nitrification and possibly in other Ntransformation processes.…”

Section: Agriculture Application Of Biotechnology Bv-products and Animentioning

confidence: 98%

“…Studies by Zhu et al (1995) showed that by-products contain abundance of organic C and inorganic N, P, and S; with insignificant concentration of heavj' metals. In addition Karmarkar and Tabatabai (1991) found that biotechnology by-products also contain water-soluble organic acids.…”

Section: Production and Propertiesmentioning

confidence: 99%

Biotechnology by-products and animal manures as sources of phosphorus for plants

Sutarta¹

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This manuscript has been reproduced from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality or the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from lefr to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.

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Effects of biotechnology byproducts and organic acids on nitrification in soils

Cited by 17 publications

References 15 publications

Activity of nitrifying populations in grassland soil polluted by polychlorinated biphenyls (PCBs)

Activity of nitrifying populations in grassland soil polluted by polychlorinated biphenyls (PCBs)

The effect of cadmium on the activity of nitrifying populations in two different grassland soils

Biotechnology by-products and animal manures as sources of phosphorus for plants

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