TY - JOUR
T1 - Inorganic N dynamics and N2O production from tannery effluents irrigated soil under different water regimes and fertilizer application rates
T2 - A laboratory study
AU - Trujillo-Tapia, N.
AU - Cruz Mondragón, C.
AU - Vásquez-Murrieta, M. S.
AU - Van Cleemput, O.
AU - Dendooven, L.
N1 - Funding Information:
We thank V. Olalde for soil sampling and J. Vermeulen, E. Gillis and D. Demeyer for technical assistance. This work was done during a working visit at the Laboratory of Applied Physical Chemistry, Faculty of Agricultural and Applied Biological Science, Gent University, Belgium. The research was funded by the Flemish Interuniversity Council-Own Initiatives (VLIR-EI) Belgium and Cinvestav (Mexico). N.T.-T., C.C.-M., M.S.V.-M. and L.D. received grant-aided support from VLIR-EI and N.T.-T. did this work while on sabbatical leave from Universidad del Mar campus Puerto Angel (Mexico).
PY - 2008/3
Y1 - 2008/3
N2 - Effluents from leather processing, a major industry that produces up to 64 kt waste water year-1 in the town of León (Guanajuato, Mexico), are normally discharged to the river Turbio without treatment and used downstream to irrigate agricultural land. Tannery waste water contains valuable nutrients, but also contaminants, such as salts and chromium (Cr) that might affect soil processes and crop production. We investigated how almost 25 years of irrigation of agricultural land with water from the river Turbio affected dynamics of carbon (C) and nitrogen (N) and production of nitrous oxide (N2O) under different water regimes and fertilizer application rates. Soil sampled from three adjacent fields irrigated with water from the river Turbio (soil A river irrigated) and at a distance of 10 km from the irrigation canals irrigated with non-contaminated well water (soil B well irrigated), was characterized while dynamics of C and N and production of N2O were measured in an aerobic incubation experiment. Production of CO2 was 1.33 times larger in soil A than in soil B and addition of 200 mg kg-1 ammonium (NH4+) increased its production 1.16-fold in soil B, but not in soil A. Concentrations of nitrite (NO2-) increased with increasing water content and application of 200 mg NH4+-N kg-1 soil. The soil, the addition of NH4+-N and the water content of the soil all had a significant effect on the N2O emission. Production of N2O was >40 times larger in soil incubated at 100% WHC compared to soil incubated at 40% WHC after 1 day. Emission of N2O was 6.0 times larger from soil A than from soil B. It increased 25.7 times in soil B amended with 200 mg NH4+-N kg-1 soil compared to the unamended soil, but only 1.8 times in soil A after 1 day. It was found that respiration and nitrification was not affected by irrigation with water from the river Turbio, but production of N2O was larger in soil irrigated with water from the river Turbio than in soil irrigated with well water.
AB - Effluents from leather processing, a major industry that produces up to 64 kt waste water year-1 in the town of León (Guanajuato, Mexico), are normally discharged to the river Turbio without treatment and used downstream to irrigate agricultural land. Tannery waste water contains valuable nutrients, but also contaminants, such as salts and chromium (Cr) that might affect soil processes and crop production. We investigated how almost 25 years of irrigation of agricultural land with water from the river Turbio affected dynamics of carbon (C) and nitrogen (N) and production of nitrous oxide (N2O) under different water regimes and fertilizer application rates. Soil sampled from three adjacent fields irrigated with water from the river Turbio (soil A river irrigated) and at a distance of 10 km from the irrigation canals irrigated with non-contaminated well water (soil B well irrigated), was characterized while dynamics of C and N and production of N2O were measured in an aerobic incubation experiment. Production of CO2 was 1.33 times larger in soil A than in soil B and addition of 200 mg kg-1 ammonium (NH4+) increased its production 1.16-fold in soil B, but not in soil A. Concentrations of nitrite (NO2-) increased with increasing water content and application of 200 mg NH4+-N kg-1 soil. The soil, the addition of NH4+-N and the water content of the soil all had a significant effect on the N2O emission. Production of N2O was >40 times larger in soil incubated at 100% WHC compared to soil incubated at 40% WHC after 1 day. Emission of N2O was 6.0 times larger from soil A than from soil B. It increased 25.7 times in soil B amended with 200 mg NH4+-N kg-1 soil compared to the unamended soil, but only 1.8 times in soil A after 1 day. It was found that respiration and nitrification was not affected by irrigation with water from the river Turbio, but production of N2O was larger in soil irrigated with water from the river Turbio than in soil irrigated with well water.
KW - C and N mineralization
KW - N fertilizer
KW - Production of NO
KW - Tannery effluent
KW - Water content
UR - http://www.scopus.com/inward/record.url?scp=38049035909&partnerID=8YFLogxK
U2 - 10.1016/j.apsoil.2007.10.017
DO - 10.1016/j.apsoil.2007.10.017
M3 - Artículo
SN - 0929-1393
VL - 38
SP - 279
EP - 288
JO - Applied Soil Ecology
JF - Applied Soil Ecology
IS - 3
ER -