Abstract
The effect of combined inputs of green manure (GM) and urea on maize (Zea mays L.) productivity and soil characteristics was studied in an on-farm trial at Wondo Genet, southern Ethiopia. The GM species used were the legumes Albizia gummifera G.F. Gmel and Milletia ferruginea (Hochst.) Baker and the non-legumes Cordia africana Lam and Croton macrostachyus Del. The GM and urea were applied separately or combined in different proportions to give equal rates of 100 kg N ha−1, while varying amounts of P and K were supplied by the GM. The experiment was carried out for two consecutive cropping seasons, but treatments were applied only during the first season. Yield increased by 10–84% in the combined treatments compared to the control, with the increase being significant in those treatments containing GM from Cordia and Croton, which had higher P and K but lower N and total polyphenol contents than those from Albizia and Milletia. Increasing the proportion of GM from the non-legumes tended to increase yield, but the opposite was true when the proportion of GM from the legumes was increased. This suggests that N interacted negatively with polyphenols, and/or the P and K supply from GM was more important than that of N. However, treatment effects on soil properties were not pronounced. It was concluded that a ȁ8modestȁ9 input of ≤3.0 Mg ha−1 GM from Cordia/Croton might effect a reasonable yield but that the additional use of inorganic fertilisers is necessary for the GM to have a substantially increased effect. In addition, when organic materials having both high N and high total polyphenol contents (e.g. Albizia and Milletia) are used, they should constitute the smaller proportion of the GM/fertiliser mixture.
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References
Bekunda MA, Bationo A, Ssali H (1997) Soil fertility management in Africa: a review of selected research trials. In: Buresh R, Sanchez PA, Calhoun F (eds) Replenishing soil fertility in Africa. Soil Science Society of America/American Society of Agronomy, Madison, pp 63–79
Bouyoucos GJ (1962) Hydrometer method improved for making particle size analysis of soils. Agron J 54:464–465
Bremner JM (1996) Nitrogen-total. In: Sparks DL, Page AL, Helmke PA, Loeppert RH, Soltanpour PN, Tabatabai MA, Johnston CT, Sumner ME (eds) Methods of soil analysis, part 3: chemical methods. Soil Science Society of America, Madison, pp 1085–1121
Buresh R, Sanchez PA, Calhoun F (eds) (1997) Replenishing soil fertility in Africa. Soil Science Society of America/American Society of Agronomy, Madison
Dudal R (2002) Forty years of soil fertility work in sub-Sahara Africa. In: Vanlauwe B, Diels J, Sanginga N, Merckx R (eds) Integrated plant nutrient management in sub-Saharan Africa: from concept to practice. CAB Int., Wallingford, pp 7–21
FAO (1988) FAO/UNESCO Soil map of the world: revised legend, with corrections and updates. World Soil Resources Report 60. Food and Agricultural Organization of the United Nations, Rome
Gachengo CN, Palm CA, Jama B, Othieno C (1999) Tithonia and senna green manures and inorganic fertilizers as phosphorus sources for maize in Western Kenya. Agroforest Syst 44:21–36
Gebrekidan H, Belay A, Uloro Y, Zewdie E (1999) Yield response of maize (Zea mays L.) to crop residue management on two major soil types of Alemaya, Eastern Ethiopia: I. Effects of varying rates of applied and residual N and P fertilizers. Nutr Cycl Agroecosyst 54:65–71
Giller KE, Cadisch G, Ehaliotis C, Adams E, Sakala WD, Mafongoya PL (1997) Building soil nitrogen capital in Africa. In: Buresh R, Sanchez PA, Calhoun F (eds) Replenishing soil fertility in Africa. Science Society of America/American Society of Agronomy, Madison, pp 151–192
Giller KE (2002) Targeting management of organic resources and mineral fertilizers: can we match scientistsȁ9 fantasies with farmersȁ9 realities. In: Vanlauwe B, Diels J, Sanginga M, Merckx R (eds) Integrated plant nutrient management in sub-Saharan Africa: from concept to practice. CAB Int, Wallingford, pp 155–171
Gindaba J, Olsson M, Itanna F (2004) Nutrient composition and short-term release from Croton macrostachyus Del. and Millettia ferruginea (Hochst.) Baker leaves. Biol Fert Soils 40:393–397
Haynes RJ, Naidu R (1998) Influence of lime, fertilizer and manure applications on soil organic matter content and soil physical conditions: a review. Nutr Cycl Agroecosyst 51:123–137
Kwabiah AB, Stoskopf NC, Voroney RP, Palm CA (2001) Nitrogen and phosphorus release from decomposing leaves under sub-humid tropical conditions. Biotropica 33:229–240
Kwabiah AB, Stoskopf NC, Palm CA, Voroney RP, Rao MR, Gacheru E (2003) Phosphorus availability and maize response to organic and inorganic fertilizer inputs in a short term study in western Kenya. Agric Ecosyst Environ 95:49–59
Mafongoya PL, Giller KE, Palm CA (1997) Decomposition and nitrogen release patterns of tree prunings and litter. Agrofor Syst 38:77–97
Mafongoya PL, Nair PKR, Dzowela BH (1998) Mineralization of nitrogen from decomposing leaves of multipurpose trees as affected by their chemical composition. Biol Fert Soils 27:143–148
Mafongoya PL, Barak P, Reed JD (2000) Carbon, nitrogen and phosphorus mineralization of tree leaves and manure. Biol Fert Soils 30:298–305
Melillo JM, Aber JD, Muratore JF (1982) Nitrogen and lignin control of hardwood leaf litter decomposition dynamics. Ecology 63:621–626
Murphy J, Riley JP (1962) A modified single solution method for determination of phosphate in natural waters. Anal Chim Acta 27:31–36
Nelson DW, Sommers LE (1982) Total carbon, organic carbon and organic matter. In: Page AL (ed) Methods of soil analysis. Part (2): chemical and microbiological properties. American Society of Agronomy/Soil Science Society of America, Madison, pp 539–579
Nziguheba G, Palm CA, Buresh RJ, Smithson PC (1998) Soil phosphorus fractions and adsorption as affected by organic and inorganic sources. Plant Soil 198:159–168
Nziguheba G, Merckx R, Palm CA, Rao MR (2000) Organic residues affect phosphorus availability and maize yields in a Nitisol of western Kenya. Biol Fert Soils 32:328–339
Nziguheba G, Merckx R, Palm CA (2002) Contribution of organic residues to soil phosphorus availability in the highlands of western Kenya. In: Vanlauwe B, Diels J, Sanginga N, Merckx R (eds) Integrated plant nutrient management in sub-Saharan Africa: from concept to practice. CAB Int, Wallingford, pp 133–142
Palm CA, Sanchez PA (1990) Decomposition and nutrient release patterns of the leaves of 3 tropical legumes. Biotropica 22:330–338
Palm CA (1995) Contribution of agroforestry trees to nutrient requirements of intercropped plants. Agroforest Syst 30:105–124
Palm CA, Myers RJK, Nandwa SM (1997) Combined use of organic and inorganic nutrient sources for soil fertility maintenance and replenishment. In: Buresh R, Sanchez PA, Calhoun F (eds) Replenishing soil fertility in Africa. Science Society of America/American Society of Agronomy, Madison, pp 193–217
Palm CA, Giller KE, Mafongoya PL, Swift MJ (2001) Management of organic matter in the tropics: translating theory into practice. Nutr Cycl Agroecosyst 61:63–75
Reed JD, Horvath PJ, Allen MS, Van Soest PJ (1985) Gravimetric determination of soluble phenolics including tannins from leaves by precipitation with trivalent ytterbium. J Sci Food Agric 36:255–261
Sanchez PA (1976) Properties and management of soils in the tropics. John Wiley and Sons, New York
Sanchez PA, Shepherd KD, Soule MJ, Place FM, Buresh RJ, Izac AMN, Mokwunye AU, Kwesiga FR, Ndiritu CG, Woomer PL (1997) Soil fertility replenishment in Africa: an investment in natural resource capital. In: Buresh R, Sanchez PA, Calhoun F (eds) Replenishing soil fertility in Africa. Soil Science Society of America/American Society of Agronomy, Madison, pp 1–46
Sanchez PA, Jama BA (2002) Soil fertility replenishment takes off in East and Southern Africa. In: Vanlauwe B, Diels J, Sanginga N, Merckx R (eds) Integrated plant nutrient management in sub-Saharan Africa: from concept to practice. CAB Int, Wallingford, pp 23–45
Singh BB, Jones JP (1976) Phosphorus sorption and desorption characteristics of soil as affected by organic residues. Soil Sci Soc Am J 40:389–394
Smaling EMA, Nandwa SM, Janssen BH (1997) Soil fertility in Africa is at stake. In: Buresh R, Sanchez PA, Calhoun F (eds) Replenishing soil fertility in Africa. Science Society of America/American Society of Agronomy, Madison, pp 47–61
Stoorvogel JJ, Smaling EMA (1990) Assessment of soil nutrient depletion in sub-Sahara Africa: 1983–2000, vol 1–4. Report. no. 28, Winand Staring Center, Wageningen
Syers JK (1997) Managing soils for long-term productivity. Philos T Roy Soc B 352:1011–1021
Tadesse G (2001) Land degradation: a challenge to Ethiopia. Environ Manage 27:815–824
Teklay T (2004) Seasonal dynamics in the concentrations of macronutrients and organic constituents in green and senesced leaves of three agroforestry species in southern Ethiopia. Plant Soil 267:297–307
Teklay T, Malmer A (2004) Decomposition of leaves from two indigenous trees of contrasting qualities under shaded-coffee and agricultural hand-uses during the dry season at Wondo Genet, Ethiopia. Soil Biol Biochem 36:777–786
Van Soest PJ (1963) Use of detergents in the analysis of fibrous feeds. II: a rapid method for the determination of fibre and lignin. J Assoc Off Agric Chem 46:829–835
Vanlauwe B, Aihou K, Aman S, Iwuafor ENO, Tossah BK, Diels J, Sanginga N, Lyasse O, merckx R, Deckers J (2001) Maize yield as affected by organic inputs and urea in the West African moist savanna. Agron J 93:1191–1199
Wong MTF, Akyeampong E, Nortcliff S, Rao MR, Swift RS (1995) Initial responses of maize and beans to decreased concentrations of monomeric inorganic aluminium with application of manure or tree prunings to an Oxisol in Burundi. Plant Soil 171:275–282
Wu J, He ZL, Wei WX, Oȁ9Donnell AG, Syers JK (2000) Quantifying microbial biomass phosphorus in acid soils. Biol Fertil Soils 32:500–507
Acknowledgements
This study was funded by the Swedish International Development Agency (SIDA) through institutional support to the Wondo Genet College of Forestry. We thank Dr. Emma Tilston and Dr. Ulrik Ilstedt for helpful comments on the manuscript.
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Teklay, T., Nyberg, G. & Malmer, A. Effect of organic inputs from agroforestry species and urea on crop yield and soil properties at Wondo Genet, Ethiopia. Nutr Cycl Agroecosyst 75, 163–173 (2006). https://doi.org/10.1007/s10705-006-9020-3
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DOI: https://doi.org/10.1007/s10705-006-9020-3