Different fertilizer types affected nitrogen and carbon cycling in eroded and colluvial soils of Southern Ecuador

Abstract

A tropical smallholder cash crop farming system in a semi-arid Inter-Andean valley of Ecuador was investigated. Intensive irrigated agriculture with up to 400 kg of urea-N fertilization ha-1·a-1 prevails in colluvial sites whereas urea application in the steep eroded sites is lower. Farmers did recently introduce manure to partly replace urea fertilization. Knowledge about the effects of mineral and organic fertilizers on nitrogen and carbon cycling needs to be improved to maintain sustainable agriculture in the research area. Therefore, a laboratory incubation experiment was conducted to investigate effects of urea and guinea pig manure on microbial activity of col-luvial foot slope and eroded upper slope soils. Soil samples were treated with 200 kg·N·ha-1 either applied as urea, guinea pig manure or a combination of both and compared to a control. Urea fertilizer was labeled with 15N to trace its fate. Microbial biomass and basal respiration were determined in different time intervals. Urea fertilization induced an acceleration of soil organic matter (SOM) mineralization (positive priming effect) in the first seven days of incubation. The combined fertilization served as a positive alternative to the present urea management since it increased the amount of microbial biomass and provided mineral nitrogen for immediate plant uptake. Moreover, low recovery rates suggested an immobilization of fertilized nitrogen into the microbial biomass inducing an efficient and sustained nutrient release throughout the entire growing season. SOM stocks in colluvial soils were 40% below those of eroded soils which was partly due to the positive priming effect after urea fertilization. Microbial activity and efficiency were not reduced by soil erosion.

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Bahr, E. , Hamer, U. , Chamba Zaragocin, D. and Makeschin, F. (2013) Different fertilizer types affected nitrogen and carbon cycling in eroded and colluvial soils of Southern Ecuador. Agricultural Sciences, 4, 19-32. doi: 10.4236/as.2013.412A002.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] Mader, P., Fliessbach, A., Dubois, D., Gunst, L., Fried, P. and Niggli, U. (2002) Soil fertility and biodiversity in organic farming. Science, 296, 1694-1697.
http://dx.doi.org/10.1126/science.1071148
[2] Diacono, M. and Montemurro, F. (2010) Long-term effects of organic amendments on soil fertility. A review. Agronomy for Sustainable Development, 30, 401-422.
http://dx.doi.org/10.1051/agro/2009040
[3] Giller, K.E., Beare, M.H., Lavelle, P., Izac, A.M.N. and Swift, M.J. (1997) Agricultural intensification, soil biodiversity and agroecosystem function. Applied Soil Ecology, 6, 3-16.
http://dx.doi.org/10.1016/S0929-1393(96)00149-7
[4] Lal, R. (2001) Soil degradation by erosion. Land Degradation & Development, 12, 519-539.
http://dx.doi.org/10.1002/ldr.472
[5] Lal, R. (2004) Carbon sequestration in dryland ecosystems. Environmental Management, 33, 528-544.
http://dx.doi.org/10.1007/s00267-003-9110-9
[6] Harden, C.P. (1991) Andean Soil Erosion: A comparison of soil erosion conditions in two Andean watersheds. National Geographic Research & Exploration, 7, 216-231.
[7] De Noni, G., Viennot, M. and Trujillo, G. (1996) Agricultural erosion in the Ecuadorian Andes. A natural and historical phenomenon. In: Roose, E., Ed., Land Husbandry-Components and Strategy, Food and Agriculture Organization of the United Nations (FAO), Rome, 321-329.
[8] Stoorvogel, J.J. and Smaling, E.M.A. (1998) Research on soil fertility decline in tropical environments: Integration of spatial scales. Nutrient Cycling in Agroecosystems, 50, 151-158. http://dx.doi.org/10.1023/A:1009732126336
[9] Smaling, E.M.A. and Dixon, J. (2006) Adding a soil fertility dimension to the global farming systems approach, with cases from Africa. Agriculture Ecosystems & Environment, 116, 15-26.
http://dx.doi.org/10.1016/j.agee.2006.03.010
[10] Haileslassie, A., Priess, J., Veldkamp, E., Teketay, D. and Lesschen, J.P. (2005) Assessment of soil nutrient depletion and its spatial variability on smallholders’ mixed farming systems in Ethiopia using partial versus full nutrient balances. Agriculture Ecosystems & Environment, 108, 1-16. http://dx.doi.org/10.1016/j.agee.2004.12.010
[11] Tan, Z.X., Lal, R. and Wiebe, K.D. (2005) Global soil nutrient depletion and yield reduction. Journal of Sustainable Agriculture, 26, 123-146.
http://dx.doi.org/10.1300/J064v26n01_10
[12] De Koning, G.H.J., Van de Kop, P.J. and Fresco, L.O. (1997) Estimates of sub-national nutrient balances as sustainability indicators for agro-ecosystems in Ecuador. Agriculture Ecosystems & Environment, 65, 127-139.
http://dx.doi.org/10.1016/S0167-8809(97)00059-5
[13] Borbor-Cordova, M.J., Boyer, E.W., McDowell, W.H. and Hall, C.A. (2006) Nitrogen and phosphorus budgets for a tropical watershed impacted by agricultural land use: Guayas, Ecuador. Biogeochemistry, 79, 135-161.
http://dx.doi.org/10.1007/s10533-006-9009-7
[14] Van der Velde, M., See, L. and Fritz, S. (2012) Agriculture: Soil remedies for small-scale farming. Nature, 484, 318. http://dx.doi.org/10.1038/484318c
[15] Oenema, O., Janssen, B.H., Smaling, E. and Hoffland, E. (2006) Nutrient management in tropical agroecosystems. Agriculture Ecosystems & Environment, 116, 1-3.
http://dx.doi.org/10.1016/j.agee.2006.03.008
[16] Adesemoye, A.O. and Kloepper, J.W. (2009) Plant-microbes interactions in enhanced fertilizer-use efficiency Applied Microbiology and Biotechnology, 85, 1-12.
http://dx.doi.org/10.1007/s00253-009-2196-0
[17] Ouedraogo, E., Mando, A., Brussaard, L. and Stroosnijder, L. (2007) Tillage and fertility management effects on soil organic matter and sorghum yield in semi-arid West Africa. Soil & Tillage Research, 94, 64-74.
http://dx.doi.org/10.1016/j.still.2006.07.001
[18] Palm, C.A., Gachengo, C.N., Delve, R.J., Cadisch, G. and Giller, K.E. (2001) Organic inputs for soil fertility management in tropical agroecosystems: Application of an organic resource database. Agriculture Ecosystems & Environment, 83, 27-42.
http://dx.doi.org/10.1016/S0167-8809(00)00267-X
[19] Huang, Z.Q., Xu, Z.H. and Chen, C.R. (2008) Effect of mulching on labile soil organic matter pools, microbial community functional diversity and nitrogen transformations in two hardwood plantations of subtropical Australia. Applied Soil Ecology, 40, 229-239.
http://dx.doi.org/10.1016/j.apsoil.2008.04.009
[20] Kuzyakov, Y., Friedel, J.K. and Stahr, K. (2000) Review of mechanisms and quantification of priming effects. Soil Biology & Biochemistry, 32, 1485-1498.
http://dx.doi.org/10.1016/S0038-0717(00)00084-5
[21] Glendining, M.J., Poulton, P.R., Powlson, D.S. and Jenkinson, D.S. (1997) Fate of N-15-labelled fertilizer applied to spring barley grown on soils of contrasting nutrient. Plant and Soil, 195, 83-98.
http://dx.doi.org/10.1023/A:1004295531657
[22] Abe, T., Katayama, A. and Watanabe, A. (2007) Temporal changes in distribution and composition of N from labeled fertilizer in soil organic matter fractions. Biology and Fertility of Soils, 43, 427-435.
http://dx.doi.org/10.1007/s00374-006-0120-7
[23] Adesemoye, A.O., Torbert, H.A. and Kloepper, J.W. (2010) Increased plant uptake of nitrogen from N-15-depleted fertilizer using plant growth-promoting rhizobacteria. Applied Soil Ecology, 46, 54-58.
http://dx.doi.org/10.1016/j.apsoil.2010.06.010
[24] Potthast, K., Hamer, U. and Makeschin, F. (2012) In an Ecuadorian pasture soil the growth of Setaria sphacelata, but not of soil microorganisms, is co-limited by N and P. Applied Soil Ecology, 62, 103-114.
http://dx.doi.org/10.1016/j.apsoil.2012.08.003
[25] Hamer, U., Potthast, K. and Makeschin, F. (2009) Urea fertilisation affected soil organic matter dynamics and microbial community structure in pasture soils of Southern Ecuador. Applied Soil Ecology, 43, 226-233.
http://dx.doi.org/10.1016/j.apsoil.2009.08.001
[26] Kukal, S.S., Rehana, R. and Benbi, D.K. (2009) Soil organic carbon sequestration in relation to organic and inorganic fertilization in rice-wheat and maize-wheat systems. Soil & Tillage Research, 102, 87-92.
http://dx.doi.org/10.1016/j.still.2008.07.017
[27] Hai, L., Li, X.G., Li, F.M., Suo, D.R. and Guggenberger, G. (2010) Long-term fertilization and manuring effects on physically-separated soil organic matter pools under a wheat-wheat-maize cropping system in an arid region of China. Soil Biology & Biochemistry, 42, 253-259.
http://dx.doi.org/10.1016/j.soilbio.2009.10.023
[28] Alemu, G. and Bayu, W. (2005) Effects of farmyard manure and combined N and P fertilizer on sorghum and soil characteristics in northeastern Ethiopia. Journal of Sustainable Agriculture, 26, 23-41.
http://dx.doi.org/10.1300/J064v26n02_04
[29] Zimmerer, K.S. and Langstroth, R.P. (1993) Physical-Geography of tropical Latin-America—The spatial and temporal heterogeneity of environments. Singapore Journal of Tropical Geography, 14, 157-172.
http://dx.doi.org/10.1111/j.1467-9493.1993.tb00046.x
[30] Garcia Ventocilla, D., Mamani Gamarra, G., Roman Cabello, N., Suarez Salas, L., Contreras Marin, A. and Malca Jauregui, J. (2011) Effect of addition of organic matter on bacterial population dynamics of soil in potato and corn crops. Revista Peruana de Biologia, 18, 355-360.
[31] Gonzalez, A. and Cantosaenz, M. (1993) Comparison of 5 organic amendments for the control of Globodera-Pallida in microplots in Peru. Nematropica, 23, 133-139.
[32] Garfi, M., Gelman, P.R., Comas, J., Carrasco, W. and Ferrer, I. (2011) Agricultural reuse of the digestate from low-cost tubular digesters in rural Andean communities. Waste Management, 31, 2584-2589.
http://dx.doi.org/10.1016/j.wasman.2011.08.007
[33] Dinesh, R., Srinivasan, V., Hamza, S. and Manjusha, A. (2010) Short-term incorporation of organic manures and biofertilizers influences biochemical and microbial characteristics of soils under an annual crop [Turmeric (Curcuma longa L.)]. Bioresource Technology, 101, 4697-4702. http://dx.doi.org/10.1016/j.biortech.2010.01.108
[34] Jacinthe, P.A., Shukla, M.K. and Ikemura, Y. (2011) Carbon pools and soil biochemical properties in manurebased organic farming systems of semi-arid New Mexico. Soil Use and Management, 27, 453-463.
http://dx.doi.org/10.1111/j.1475-2743.2011.00369.x
[35] Abbasi, M.K. and Khizar, A. (2012) Microbial biomass carbon and nitrogen transformations in a loam soil amended with organic-inorganic N sources and their effect on growth and N-uptake in maize. Ecological Engineering, 39, 123-132.
http://dx.doi.org/10.1016/j.ecoleng.2011.12.027
[36] Bendix, J., Rollenbeck, R. and Palacios, W.E. (2004) Cloud detection in the Tropics—A suitable tool for climate-ecological studies in the high mountains of Ecuador. International Journal of Remote Sensing, 25, 4521-4540.
http://dx.doi.org/10.1080/01431160410001709967
[37] FAO, IUSS and ISRIC (2006) World reference base for soil resources 2006. In: World Soil Resources Reports No. 103. Food and Agriculture Organization of the United Nations, Rome, 128.
[38] Litherland, M., Aspden, J. and Jemielita, R. (1995) The metamorphic belts of Ecuador. British Geological Survey, Nottingham.
[39] Tabatabai, M.A. and Bremner, J.M. (1970) Use of leco automatic 70-second carbon analyzer for total carbon analysis of soils. Soil Science Society of America Proceedings, 34, 608-610.
http://dx.doi.org/10.2136/sssaj1970.03615995003400040020x
[40] Bascomb, C.L. (1964) Rapid method for determination of cation-exchange capacity of calcareous and non-calcareous soils. Journal of the Science of Food and Agriculture, 15, 821-823. http://dx.doi.org/10.1002/jsfa.2740151201
[41] McKeague, J.A. and Day, D.H. (1966) Dithionite- and oxalate-extractable Fe and Al as aids in differentiating various classes of soils. Canadian Journal of Soil Science, 46, 13-22. http://dx.doi.org/10.4141/cjss66-003
[42] Bray, R.H. and Kurtz, L.T. (1945) Determination of total, organic, and available forms of phosphorus in soil. Soil Science, 59, 39-45.
http://dx.doi.org/10.1097/00010694-194501000-00006
[43] Guo, L.B., Cowie, A.L., Montagu, K.D. and Gifford, R.M. (2008) Carbon and nitrogen stocks in a native pasture and an adjacent 16-year-old Pinus radiata D. Don. plantation in Australia. Agriculture Ecosystems & Environment, 124, 205-218. http://dx.doi.org/10.1016/j.agee.2007.09.013
[44] Schlichting, E., Blume, H.-P. and Stahr, K. (1995) Bodenkundliches Praktikum. Blackwell Wissenschaftsverlag, Berlin.
[45] Irshad, M., Yamamoto, S., Eneji, A.E., Endo, T. and Honna, T. (2002) Urea and manure effect on growth and mineral contents of maize under saline conditions. Journal of Plant Nutrition, 25, 189-200.
http://dx.doi.org/10.1081/PLN-100108790
[46] Yousif, A.M. and Mubarak, A.R. (2009) Variations in nitrogen mineralization from different manures in semiarid tropics of Sudan with reference to salt-affected soils. International Journal of Agriculture and Biology, 11, 515-520.
[47] Vance, E.D., Brookes, P.C. and Jenkinson, D.S. (1987) An extraction method for measuring soil microbial biomass-C. Soil Biology & Biochemistry, 19, 703-707.
http://dx.doi.org/10.1016/0038-0717(87)90052-6
[48] Martens, R. (1995) Current methods for measuring microbial biomass-C in soil—Potentials and limitations. Biology and Fertility of Soils, 19, 87-99.
http://dx.doi.org/10.1007/BF00336142
[49] Jenkinson, D.S., Brookes, P.C. and Powlson, D.S. (2004) Measuring soil microbial biomass. Soil Biology & Biochemistry, 36, 5-7.
http://dx.doi.org/10.1016/j.soilbio.2003.10.002
[50] Anderson, T.H. and Domsch, K.H. (1993) The metabolic quotient for CO2 (qCO2) as a specific activity parameter to assess the effects of environmental conditions, such as pH, on the microbial biomass of forest soils. Soil Biology & Biochemistry, 25, 393-395.
http://dx.doi.org/10.1016/0038-0717(93)90140-7
[51] Mulvaney, R.L., Khan, S.A., Stevens, W.B. and Mulvaney, C.S. (1997) Improved diffusion methods for determination of inorganic nitrogen in soil extracts and water. Biology and Fertility of Soils, 24, 413-420.
http://dx.doi.org/10.1007/s003740050266
[52] Ter Braak, C.J.F. and Smilauer, P. (2002) CANOCO reference manual and CanoDraw for Windows user’s guide: Software for Canonical Community Ordination (version 4.5). Biometris, Wageningen.
[53] Cornell, R.M. and Schwertmann, U. (2003) The iron oxides: Structure, properties, reactions, occurrences and uses. Wiley-VCH, Weinheim.
[54] De Nobili, M., Contin, M., Mondini, C. and Brookes, P.C. (2001) Soil microbial biomass is triggered into activity by trace amounts of substrate. Soil Biology & Biochemistry, 33, 1163-1170.
http://dx.doi.org/10.1016/S0038-0717(01)00020-7
[55] Blagodatskaya, E.V., Blagodatsky, S.A., Anderson, T.H. and Kuzyakov, Y. (2007) Priming effects in Chernozem induced by glucose and N in relation to microbial growth strategies. Applied Soil Ecology, 37, 95-105.
http://dx.doi.org/10.1016/j.apsoil.2007.05.002
[56] Banger, K., Kukal, S.S., Toor, G., Sudhir, K. and Hanumanthraju, T.H. (2009) Impact of long-term additions of chemical fertilizers and farm yard manure on carbon and nitrogen sequestration under rice-cowpea cropping system in semi-arid tropics. Plant and Soil, 318, 27-35.
http://dx.doi.org/10.1007/s11104-008-9813-z
[57] Yan, D.Z., Wang, D.J. and Yang, L.Z. (2007) Long-term effect of chemical fertilizer, straw, and manure on labile organic matter fractions in a paddy soil. Biology and Fertility of Soils, 44, 93-101.
http://dx.doi.org/10.1007/s00374-007-0183-0
[58] Dodd, I.C. and Ruiz-Lozano, J.M. (2012) Microbial enhancement of crop resource use efficiency. Current Opinion in Biotechnology, 23, 236-242.
http://dx.doi.org/10.1016/j.copbio.2011.09.005
[59] Marinari, S., Badalucco, L., DeToledo, V.C. and Grego, S. (1996) Effect of composted manure on soil fertility and maize (Zea mays) production: Preliminary results. Agrochimica, 40, 276-283.
[60] Rees, R. and Castle, K. (2002) Nitrogen recovery in soils amended with organic manures combined with inorganic fertilisers. Agronomie, 22, 739-746.
http://dx.doi.org/10.1051/agro:2002061
[61] Bremer, E. and Van Kessel, C. (1992) Seasonal microbial biomass dynamics after addition of lentil and wheat residues. Soil Science Society of America Journal, 56, 1141-1146.
http://dx.doi.org/10.2136/sssaj1992.03615995005600040022x
[62] Abe, T., Suwandhi, S.S., Ardjasa, W.S., Ando, H. and Watanabe, A. (2002) Incorporation of nitrogen from urea fertilizer into soil organic matter in rice paddy and cassava upland fields in Indonesia. Soil Science and Plant Nutrition, 48, 825-832.
http://dx.doi.org/10.1080/00380768.2002.10408708
[63] Ibewiro, B., Sanginga, N., Vanlauwe, B. and Merckx, R. (2000) Transformations and recovery of residue and fertilizer nitrogen-15 in a sandy lixisol of West Africa. Biology and Fertility of Soils, 31, 261-269.
http://dx.doi.org/10.1007/s003740050655
[64] Devevre, O.C. and Horwath, W.R. (2001) Stabilization of fertilizer nitrogen-15 into humic substances in aerobic vs. waterlogged soil following straw incorporation. Soil Science Society of America Journal, 65, 499-510.
http://dx.doi.org/10.2136/sssaj2001.652499x
[65] Galdos, M.V., Cerri, C.C. and Cerri, C.E.P. (2009) Soil carbon stocks under burned and unburned sugarcane in Brazil. Geoderma, 153, 347-352.
http://dx.doi.org/10.1016/j.geoderma.2009.08.025
[66] Sparling, G.P. (1992) Ratio of microbial biomass carbon to soil organic-carbon as a sensitive indicator of changes in soil organic-matter. Australian Journal of Soil Research, 30, 195-207.
http://dx.doi.org/10.1071/SR9920195
[67] Nziguheba, G., Palm, C.A., Buresh, R.J. and Smithson, P.C. (1998) Soil phosphorus fractions and adsorption as affected by organic and inorganic sources. Plant and Soil, 198, 159-168.
http://dx.doi.org/10.1023/A:1004389704235
[68] Rousk, J., Baath, E., Brookes, P.C., Lauber, C.L., Lozupone, C., Caporaso, J.G., Knight, R. and Fierer, N. (2010) Soil bacterial and fungal communities across a pH gradient in an arable soil. Isme Journal, 4, 1340-1351.
http://dx.doi.org/10.1038/ismej.2010.58
[69] Eghball, B. (2002) Soil properties as influenced by phosphorus- and nitrogen-based manure and compost applications. Agronomy Journal, 94, 128-135.
http://dx.doi.org/10.2134/agronj2002.0128
[70] Sharma, A.R. and Mittra, B.N. (1991) Effect of different rates of application of organic and nitrogen fertilizers in a rice-based cropping system. Journal of Agricultural Science, 117, 313-318.
http://dx.doi.org/10.1017/S0021859600067046
[71] Liu, S.G., Bliss, N., Sundquist, E. and Huntington, T.G. (2003) Modeling carbon dynamics in vegetation and soil under the impact of soil erosion and deposition. Global Biogeochemical Cycles, 17, 1074.
http://dx.doi.org/10.1029/2002GB002010
[72] Lal, R. (2003) Soil erosion and the global carbon budget. Environment International, 29, 437-450.
http://dx.doi.org/10.1016/S0160-4120(02)00192-7
[73] Gregorich, E.G., Greer, K.J., Anderson, D.W. and Liang, B.C. (1998) Carbon distribution and losses: Erosion and deposition effects. Soil & Tillage Research, 47, 291-302.
http://dx.doi.org/10.1016/S0167-1987(98)00117-2
[74] Doetterl, S., Six, J., Van Wesenael, B. and Van Oost, K. (2012) Carbon cycling in eroding landscapes: Geomorphic controls on soil organic C pool composition and C stabilization. Global Change Biology, 18, 2218-2232.
http://dx.doi.org/10.1111/j.1365-2486.2012.02680.x
[75] Fontaine, S., Henault, C., Aamor, A., Bdioui, N., Bloor, J.M.G., Maire, V., Mary, B., Revaillot, S. and Maron, P.A. (2011) Fungi mediate long term sequestration of carbon and nitrogen in soil through their priming effect. Soil Biology & Biochemistry, 43, 86-96.
http://dx.doi.org/10.1016/j.soilbio.2010.09.017
[76] Pandey, C.B., Chaudhari, S.K., Dagar, J.C., Singh, G.B. and Singh, R.K. (2010) Soil N mineralization and microbial biomass carbon affected by different tillage levels in a hot humid tropic. Soil & Tillage Research, 110, 33-41.
http://dx.doi.org/10.1016/j.still.2010.06.007
[77] Harden, J.W., Sharpe, J.M., Parton, W.J., Ojima, D.S., Fries, T.L., Huntington, T.G. and Dabney, S.M. (1999) Dynamic replacement and loss of soil carbon on eroding cropland. Global Biogeochemical Cycles, 13, 885-901.
http://dx.doi.org/10.1029/1999GB900061
[78] Vandenbygaart, A.J., Kroetsch, D., Gregorich, E.G. and Lobb, D. (2012) Soil C erosion and burial in cropland. Global Change Biology, 18, 1441-1452.
http://dx.doi.org/10.1111/j.1365-2486.2011.02604.x
[79] Anderson, T.H. and Domsch, K.H. (1990) Application of ecophysiological quotients (qCO2 and qD) on microbial biomasses from soils of different cropping histories. Soil Biology & Biochemistry, 22, 251-255.
http://dx.doi.org/10.1016/0038-0717(90)90094-G
[80] Anderson, T.-H. and Domsch, K.H. (2010) Soil microbial biomass: The eco-physiological approach. Soil Biology & Biochemistry, 42, 2039-2043.
http://dx.doi.org/10.1016/j.soilbio.2010.06.026
[81] Insam, H. (1990) Are the soil microbial biomass and basal respiration governed by the climatic regime. Soil Biology & Biochemistry, 22, 525-532.
http://dx.doi.org/10.1016/0038-0717(90)90189-7

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