| Registro completo |
| Provedor de dados: |
NWISRL
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| País: |
United Kingdom
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| Título: |
Clinoptilolite Zeolite Influence on Inorganic Nitrogen in Silt Loam and Sandy Agricultural Soils
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| Autores: |
Tarkalson, D.D.
Ippolito, J.A.
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| Data: |
2010-06-01
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| Ano: |
2010
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| Palavras-chave: |
Practical farm efficiency
Nitrogen
Soil
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| Resumo: |
Development of best management practices can help improve inorganic nitrogen (N) availability to plants and reduce nitrate-nitrogen (NO3-N) leaching in soils. This study was conducted to determine the influence of the zeolite mineral Clinoptilolite (CL) additions on NO3-N and ammonium-nitrogen (NH4-N) in two common Pacific Northwest soils. The effects of CL application rate (up to 26.9 Mg ha-1) either band applied or mixed with a set rate of nitrogen (N) fertilizer on masses of NO3-N and NH4-N in leachate and soil was investigated in a column study using a Portneuf silt loam (coarse-silty mixed mesic Durixerollic Caliciorthid) and a Wolverine sand (Mixed, frigid Xeric Torripsamment). All treatments for each soil received a uniform application of N from urea fertilizer, with fertilizer banded or mixed with CL. In the Portneuf soil, band application of CL and N contained 109% more total inorganic N (NO3-N + NH4-N) in the soil/leachate system compared to mixing. In both soils, CL application rate influenced the quantity of NO3-N and NH4-N in the leachate and soil. Application of CL at rates of 6.7 to 13.4 Mg ha-1 resulted in the conservation of inorganic N in the soils. Band applying CL and N appears to conserve available inorganic N in the soil compared to mixing CL and N possibly due to decreased rates of microbial immobilization, nitrification and denitrification.
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| Tipo: |
Article
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| Identificador: |
http://eprints.nwisrl.ars.usda.gov/1431/1/1401.pdf
Tarkalson, D.D. and Ippolito, J.A. (2010) Clinoptilolite Zeolite Influence on Inorganic Nitrogen in Silt Loam and Sandy Agricultural Soils. Soil Science. 175(7):357-362. 01 June 2010.
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| Relação: |
http://eprints.nwisrl.ars.usda.gov/1431/
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| Formato: |
application/pdf
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