Abstract
A buried bag incubation technique was proposed to monitor N release from soil and decomposing green manure. The technique would facilitate not only the screening of legumes as sources of N but also measurement of the N supplying capacity of soils. Several tropical legumes were incorporated into field plots followed either by maize (Zea mays L.) or by bare fallow. Soil samples from the plow layer containing the incorporated green manure were placed in low density polyethylene bags and buried within the plow layer under the maize crop for in situ incubation. Periodic withdrawal of the bags was accompanied by fallow soil profile sampling. Above ground N accumulation by maize was equally well correlated to N release measured by either method although the bag technique required much less labor. Supplemental experiments suggested that N accumulation in the bags was reduced due to inadequate O2 diffusion but only when O2 demand was high and soil water potential was high. The results show that in situ bag incubation alone or together with fallow soil sampling can be used to estimate the N supplying potential of soil and leguminous residues.
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References
Bartlett R J 1965 A biological method for studying the aeration status of soil in situ. Soil Sci. 100, 403–408.
Bowen W T 1988 Estimating the Nitrogen Contribution of Legumes to Succeeding Maize on an Oxisol in Brazil. Ph.D. Diss., Cornell Univ., Ithaca, NY.
Bowen W T, Quintana J O, Pereira J, Bouldin D R, Reid W S and Lathwell D J 1988 Screening legume green manures as nitrogen sources to succeeding non-legume crops. I. The fallow soil method. Plant and Soil 111, 75–80.
Bremner J M 1965 Inorganic forms of nitrogen. In Methods of Soil Analysis, Part 2. Ed. C A Clark. pp 1179–1237. American Society of Agronomy, Madison, WI.
Bremner J M and Douglas L A 1971 Use of plastic films for aeration in soil incubation experiments. Soil Biol. Biochem. 3, 289–296.
Campbell C A, Stewart D W, Nickolaichuck W and Biederbeck V O 1974 Effects of growing season, soil temperature, moisture, and NH4 --N on soil nitrogen. Can. J. Soil Sci. 54, 403–412.
Eno C F 1960 Nitrate production in the field by incubating the soil in polyethylene bags. Soil Sci. Soc. Am. Proc. 24, 277–279.
Gordon A M 1988 Use of polyethylene bags and films in soil incubation studies. Soil Sci. Soc. Am. J. 52, 1519–1520.
Gordon A M, Tallas M and VanCleve K 1987 Soil incubations in polyethylene bags: Effect of bag thickness and temperature on nitrogen transformations and CO2 permeability. Can. J. Soil Sci. 67, 65–75.
Keeney D R and Nelson D W 1982 Nitrogen-inorganic forms. In Methods of Soil Analysis, Part 2. 2nd ed. Eds. A L Page, R H Miller and D R Keeney. pp 643–698. American Society of Agronomy, Madison, WI.
SAS Institute Inc. 1985 SAS user's guide: Statistics. SAS Institute Inc., Cary, NC. 00 p.
Smith S J, Young L B and Miller G E 1977 Evolution of soil nitrogen mineralization potentials under modified field coditions. Soil Sci. Soc. Am. J. 41, 74–76.
Stanford G, Frere M H and Schwaninger D H 1973 Temperature coefficient of soil nitrogen mineralization. Soil Sci. 115, 321–323.
VanSchreven D A 1968 The production of mineral nitrogen by soil samples, contained in polyethylene bags, under field conditions and in the laboratory. Plant and Soil 29, 170–183.
Westermann D T and Crothers S E 1980 Measuring soil nitrogen mineralization under field conditions. Agron. J. 72, 1009–1012.
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Carsky, R.J., Reid, W.S., Suhet, A.R. et al. Screening legume green manures as nitrogen sources to succeeding non-legume crops. Plant Soil 128, 275–282 (1990). https://doi.org/10.1007/BF00011119
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DOI: https://doi.org/10.1007/BF00011119