Abstract
The concentration of native available N in tropical soils fluctuates considerably in response to seasonal changes in soil water potential. Such fluctuation reflects the net effect of inputs of N from mineralization, fertilizers and the atmosphere, and removal by plant uptake, immobilization, leaching and gaseous losses. The greatest concentrations normally occur during the transition between the dry and wet seasons. In East-Africa, up to 184 kg mineral N ha-1 has been measured in the 0–40 cm soil layer and in Trinidad, 143 kg ha-1 was found in the 0–10 cm layer. Release and accumulation of mineral N occur as a result of the influence of soil water potential on microbial activity. This is due to changes in microbial motility, solute diffusion, microbial survival and the release of protected organic matter. A quantitative understanding of these processes should increase the efficiency of use of this valuable N resource by crops. Current methods of forecasting mineralization under field conditions include measurement of the soil mineralization potential, the release of N from seasonal inputs of litter and model predictions. Litter quality is important. Its composition, in particular its nitrogen, lignin and soluble polyphenol content has a major impact on its N mineralization rate.
Crop uptake, gaseous and leaching losses decrease the concentration of soil mineral N during the wet season. These losses are important under moist tropical conditions. For example, at Port Harcourt and Ibadan in Nigeria, leaching losses were large in spite of NO -3 adsorption which decreased the depth of NO -3 leaching relative to through-flow. To minimise these losses, it is essential to synchronise plant nutrient demand with supply by mineralisation. This is particularly important at the start of the tropical rainy season when high rates of mineralisation often in excess of the relatively low levels of crop demand, are observed. Fertilizer recommendation, the time table for cropping and the farming system used therefore need to take into account the seasonal availability of N. The CERES model simulates crop growth and development and the N-cycle. As development and validation continue, such models should provide a strong basis for better soil, crop and fertilizer management practices. A better understanding of the processes should provide a strong basis for futher development of such models.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Amato A, Jackson RB, Butler JHA and Ladd JN (1984) Decomposition of plant material in Australian soils. II Residual organic 14C and 15N from legume plant parts decomposing under field and laboratory conditions. Aust J Soil Res 22: 331–341.
Anderson JM and Ingram JSL (1989) Tropical soil biology and fertility: a handbook of methods. CAB International, Oxon, UK
Ayanaba A, Tuckwell SB and Jenkinson DS (1976) The effect of clearing and cropping on the soil organic reserves and biomass of tropical forest soils. Soil Biol Biochem 8: 519–525
Balesdent J, Meriotti A and Boisgontier D (1990) Effect of tillage on soil organic carbon mineralization estimated from 13C abundance in maize fields. J Soil Sci 41: 587–596
Birch HF (1958) The effect of soil drying on humus decomposition and nitrogen availability. Plant and Soil 10: 9–31
Bottner B (1985) Response of microbial biomass to alternate moist and dry conditions in a soil incubated with 14C- and 15N-labelled plant material. Soil Biol Biochem 17: 329–337
Bowen WT, Jones JW, Carsky RJ and Quintana JO (1993) Evaluation of the nitrogen submodel of CERES-Maize following legume green manure incorporation. Agron J 85: 153–159
Bradbury NJ, Whitmore AP, Hart PBS and Jenkinson DS (1993) Modelling the fate of nitrogen in crop and soil in the years following application of 15N-labelled fertilizer to winter wheat. J Agric Sci (Camb.) 121: 363–379
Cabrera ML (1993) Modelling the flush of nitrogen mineralization caused by drying and rewetting soils. Soil Sci Soc Am J 57: 63–66
Christensen BT (1992) Physical fractionation of soil and organic matter in primary particle size and density separates. Adv Soil Sci 20: 1–90
Dommergues Y, Garcia JL and Ganly F (1980) Microbiological considerations of the nitrogen cycle in West African ecosystems. In: Rosswall T (ed) Nitrogen Cycling in West African Ecosystems, pp 55–72. UTA, Ibadan, Nigeria.
Duxbury JM, Smith MS and Doran JW with Jordan C, Szott L and Vance E (1989) Soil organic matter as a source and sink of plant nutrients. In: Coleman et al. (eds.) Dynamics of Soil Organic Matter in Tropical Ecosystems, pp 33–67
Elston J and Dennett MD (1981) Climates of the tropics in relation to crop productivity. In: Greenland DJ (ed) Characterisation of Soils, pp 262–275. Clarendon Press, Oxford
Ford GW and Greenland DJ (1968) The dynamics of partly humified organic matter in some arable soils. Trans 9th Int Congr Soil Sci 2: 403–410
Fox RH, Myers RJK and Vallis I (1990) The nitrogen mineralization rate of legume residues in soil as influenced by their polyphenol, lignin, and nitrogen contents. Plant and Soil 129: 251–259
Frankenberger WT and Abdelmagid HM (1985) Kinetic parameters of nitrogen mineralization rates of leguminous crops incorporated into soil. Plant and Soil 87: 257–271
Ghani A, McLaren RG and Swift RS (1990) Seasonal fluctuations of sulphate and soil microbial biomass-S in the surface of a Wakanui soil. NZ J Agric Res 33: 467–472
Godwin DC, Singh U, Buresh RJ and DeDatta SK (1990) Modelling of nitrogen dynamics in relation to rice growth and yield. In:Trans 14th Int Congr Soil Sci Kyoto, Japan. Vol IV, pp 320–325
Gonzalez MA and Sauerbeck DR (1982) Decomposition of 14C-labelled plant residues in different soils and climates of Costa-Rica. Proc Reg Coll on Soil Organic Matter Studies, Piracicaba, Brazil, pp 141–146
Greenland DJ (1958) Nitrate fluctuations in tropical soils. J Agric Sci 50: 82–92
Greenland DJ (1980) The nitrogen cycle in West Africa-Agronomic considerations. In: Rosswall T (ed) Nitrogen Cycling in West African Ecosystems, pp 73–81. SCOPE/UNEP, Sweden
Greenland DJ, Wild A and Adams D (1992) Organic matter dynamics in soils of the tropics-From myth to complex reality. In: Lal R et al. (eds) Myths and Science of Soils of the Tropics. SSSA special publication No.29, pp 17–33. SSSA, ASA, Madison, WI, USA
Griffin DM (1981) Water potential as a selective factor in the microbial ecology of soils. In: Kral DM and Cousin MK (eds) Water Potential Relations in Soil Microbiology. SSSA Publication No. 9, pp 141–151. SSSA, Madison, WI, USA
Hardy F (1946) Seasonal fluctuations of soil moisttire and nitrate in a humid tropical climate (Trinidad, B.W.I.). Trop Agric (Trinidad) 23: 40–49
Harris PJ (1988) Ecology of the soil population. In: Wild A (ed) Russell’s Soil Conditions and Plant Growth, pp 472–499. Longman, UK
Jansson SL and Persson J (1982) Mineralization and immobilization of soil nitrogen. In: Stevenson FJ (ed) Nitrogen in Agricultural Soils, pp 229–252. ASA, Madison, Wisconsin, USA
Jenkinson DS (1966) Studies on the decomposition of plant material in soil II. Partial sterilization of soil and the soil biomass. J Soil Sci 17: 280–302
Jenkinson DS (1990) The turnover of organic carbon and nitrogen in soil. Phil Trans Royal Soc, London, B 329: 361–368.
Jenkinson DS and Ayanaba A (1977) Decomposition of carbon-14 labelled plant material under tropical conditions. Soil Sci Soc Am J 41: 912–915
Jenkinson DS, Fox RH and Rayner JH (1985) Interaction between fertilizer nitrogen and soil nitrogen… the so called “priming” effect. J Soil Sci 36: 425–444
Jensen HL (1929) On the influence of the carbon: nitrogen ratios of organic material on the mineralization of nitrogen. J Agric Sci 19: 71–82
Kuikman PJ, Jansen AG and van Veen JA (1991) 15N-nitrogen mineralization from bacteria by protozoan grazing at different soil moisture regimes. Soil Biol Biochem 23: 193–200
Kuikman PJ, van Vuuren MMI and van Veen JA (1989) Effect of soil moisture regime on predation by protozoa of bacterial biomass and the release of bacterial nitrogen. Agric Ecosys Environ 27: 271–279
Ladd JN, Amato M, and Oades JM (1985) Decomposition of plant material in Australian soils. III. Residual organic and microbial biomass C and N from isotope-labelled legume material and soil organic matter decomposing under field conditions. Aust J Soil Res 23: 603–611
Marrs RH, Thompson J, Scott D and Proctor J (1991) Nitrogen mineralization and nitrifcation in terra firme forest and savanna soils on Ilha de Maraca, Roraima, Brazil. J Trop Ecol 7: 123–127
Marumoto T, Anderson JPE and Domsch KH (1982) Mineralization of nutrients from soil microbial biomass. Soil Biol Biochem 14: 469–476
McGill WB and Myers RJK (1987) Controls on dynamics of soil and fertilizer N. In: Follett R, Cole CV and Stewart JWB (eds) Soil Fertility and Organic Matter as Critical Components of Production Systems. Soil Sci Soc Am Spec Publ No. 19, pp 71–98. ASA, Madison
Meiklejohn J (1957) The number of bacteria and actinomycetes in Kenyan soils. J Soil Sci 8: 240–247
Mueller-Harvey I, Juo ASR and Wild A (1989) Mineralization of nutrients after forest clearance and their uptake during cropping. In: Proctor J (ed.) Mineral Nutrients in Tropical Forest and Savanna Ecosystems, pp 315–324. Blackwell Scientific Publishers, Oxford, UK
Myers RJK (1988) Nitrogen management of upland crops: From cereals to food legumes to sugarcane. In: Wilson JR (ed) Advances in Nitrogen Cycling in Agricultural Ecosystems, pp 257–273. CAB International, Oxon, UK
Newman AS and Norman AG (1943) The activity of subsurface soil population. Soil Sci 55: 377–391
Nkrumah M, Griffith SM and Ahmad N (1989) Lysimeter and field studies on 15N in a tropical soil. II. Transformation of (NH2)2CO-15N in a tropical loam in lysimeter and field plots. Plant and Soil 114: 13–18
Norman DH (1972) Mixed cropping in Northern Nigeria III. Mixtures of cereals. Exp Agric 15: 41–48.
Orchard VA and Cook FJ (1983) Relationship between soil respiration and soil moisture. Soil Biol Biochem 15: 447–453.
Palm CA and Sanchez PA (1991) Nitrogen release from the leaves of some tropical legumes as affected by their lignin and polyphenolic contents. Soil Biol Biochem 23: 83–88.
Papendick RI and Campbell GS (1981) Theory and measurement of water potential. In: Krai DM and Cousin MK (eds) Water Potential Relations in Soil Microbiology. SSSA Publication No. 9, pp 1–22. SSSA, Madison, WI, USA
Parton WJ, Anderson DW, Cole CV and Stewart JBW (1983) Simulation of soil organic matter formations and mineralization in semi arid agro ecosystems. In: Lawrence et al. (eds) Nutrient Cycling in Agricultural Ecosystems. The Univ Georgia Spec Publ No. 23, pp 533–550
Pilbeam CJ, Mahapatra BS and Wood M (1993) Soil matric potential effects on gross rates of nitrogen mineralization in an Orthic Ferralsol from Kenya. Soil Biol Biochem 25: 1409–1413
Power JF and Doran JW (1988) Role of crop residue management in nitrogen cycling and use. In: Hargrove WL (ed) Cropping Strategies for Efficient Use of Water and Nitrogen. ASA Special Publication NO. 51, pp 101–113. ASA, CSSA, SSSA. Madison, WI, USA
Powlson DS (1993) Understanding the soil nitrogen cycle. Soil Use Manage 9: 86–94
Robertson FA, Myers RJK and Saffigna PG (1993) Carbon and nitrogen mineralization in cultivated and grassland soils in subtropical Queensland. Aust J Soil Res 31: 611–619.
Robertson GP and Tiedje JM (1988) Deforestation alters den-itrification in a lowland tropical forest. Nature 336: 756–759
Robinson JBD (1957) The critical relationship between soil moisture content in the region of wilting point and the mineralization of natural soil nitrogen. J Agric Sci 49: 100–105
Russell EJ and Hutchinson HB (1909) The effect of partial sterilisation of soil on the production of plant food. J Agric Sci 3: 111–144
Sanchez P (1976) Properties and management of soils in the tropics. John Wiley and Sons, New York
Semb G and Robinson JBD (1969) The natural nitrogen flush in different arable soils and climates in East Africa. East Afr Agric For J 34: 350–370.
Seneviratne R and Wild A (1985) Effect of mild drying on the mineralization of soil nitrogen. Plant and Soil 84: 175–179
Skjemstad JO, Vallis I and Myers RJK (1988) Decomposition of soil organic nitrogen. In: Wilson JR (ed) Advances in Nitrogen Cycling in Agricultural Ecosystems, pp 134–144. CAB International, Oxon, UK
Sommers LE, Gilmour CM, Wildung RE and Beck SM (1981) The effect of water potential on decomposition processes in soils. In: Kral DM and Cousin MK (eds) Water Potential Relations in Soil Microbiology. SSSA Publication No. 9, 97–117. SSSA, Madison, WI, USA
Spycher G, Sollins P and Rose S (1983) Carbon and nitrogen in the light fraction of a forest soil: vertical distribution and seasonal patterns. Soil Sci 135: 79–87
Srivastava SC and Singh JS (1991) Microbial C, N and P in dry tropical forest soils:effects of alternate land uses and nutrient flux. Soil Biol Biochem 23: 117–124
Stanford G and Smith S J (1972) Nitrogen mineralization potential of soils. Soil Sci Soc Am J 36: 465–472
Stott DE, Elliott LF, Papendick RI and Campbell GS (1986) Low temperature or low water potential effects on the microbial decomposition of wheat residue. Soil Biol Biochem 18: 577–582
Swift MJ and Boddy L (1984) Animal-microbial interactions in wood decomposition. In: Anderson JM, Rayner ADM and Wilson DWH (eds) Invertebrate-microbial Interactions, pp 89–131. Cambridge University Press, Cambridge
Tenney FG and SA Waksman (1929) Composition of natural organic materials and their decomposition in the soil: IV. The nature and rapidity of decomposition of the various organic complexes in different plant materials, under aerobic conditions. Soil Sci 28: 55–84
Vallis I and Jones RJ (1973) Net mineralization of nitrogen in leaves and leaf litter of Desmodium intortum and Phaseolus atropurpureus mixed with soil. Soil Biol Biochem 5: 391–398
Van der Kruijs ACBM, Wong MTF, Juo ASR and Wild A (1988) Recovery of 15N-labelled fertilizer in crops, drainage water and soil using monolith lysimeters in south-east Nigeria. J Soil Sci 39: 483–492
Van Noordwijk M (1989) Rooting depth in cropping systems in humid tropics in relation to nutrient use efficiency. In: van der Heide J (ed) Nutrient Management for Food Crop Production in Tropical Farming Systems, pp 129–144. Institute of Soil Fertility, Haren and Universitad Brawijaya, Malang
Van Veen JA, Ladd JN and Frissel MJ (1984) Modelling C and N turnover through the microbial biomass in soil. Plant and Soil 76: 257–274
West AW, Sparling GP, Feltham CW and Reynolds J (1992) Microbial activity and survival in soils dried at different rates. Aust J Soil Res 30: 209–222
Wetselaar R (1968) Soil organic nitrogen mineralization as affected by low soil water potentials. Plant and Soil 29: 9–17
Wild A (1972) Mineralization of soil nitrogen at a savanna site in Nigeria. Exp Agric 8: 91–97
Wong MTF, Wild A and Juo ASR (1987) Retarded leaching of nitrate measured in monolith lysimeters in south east Nigeria. J Soil Sci 38: 511–518
Wong MTF, Hughes R and Rowell DL (1990a) The retention of nitrate in acid soils from the tropics. Soil Use Manage 6: 72–74
Wong MTF, Hughes R and Rowell DL (1990b) Retarded leaching of nitrate in acid soils from the tropics: measurement of the effective anion exchange capacity. J Soil Sci 41: 655–663
Wong MTF and Swift RS (1994) Amelioration of aluminium phytotoxicity with organic matter. In: Date RA, Grundon NJ, Rayment GE and Probert ME (eds) Proceedings of the 3rd International Symposium on Plant-Soil Interactions at Low pH: Principles and Management. Brisbane, Australia
Wong MTF, Van Der Kruijs ACBM and Juo ASR (1992) Leaching loss of calcium, magnesium, potassium and nitrate derived from soil, lime and fertilizers as influenced by urea applied to undisturbed lysimeters in south-east Nigeria. Fert Res 31: 281–289.
Wong MTF, Wild A and Mokunye AU (1991) Overcoming soil nutrient constraints to crop production in West Africa: Importance of fertilizers and priorities in soil fertility research. Fert Res 29: 45–54
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1995 Kluwer Academic Publishers
About this chapter
Cite this chapter
Wong, M.T.F., Nortcliff, S. (1995). Seasonal fluctuations of native available N and soil management implications. In: Ahmad, N. (eds) Nitrogen Economy in Tropical Soils. Developments in Plant and Soil Sciences, vol 69. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1706-4_2
Download citation
DOI: https://doi.org/10.1007/978-94-009-1706-4_2
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7264-9
Online ISBN: 978-94-009-1706-4
eBook Packages: Springer Book Archive