Abstract
Smallholder land productivity in drylands can be increased by optimizing locally available resources, through nutrient enhancement and water conservation. In this study, we investigated the effect of tillage system, organic resource and chemical nitrogen fertilizer application on maize productivity in a sandy soil in eastern Kenya over four seasons. The objectives were to (1) determine effects of different tillage-organic resource combinations on soil structure and crop yield, (2) determine optimum organic–inorganic nutrient combinations for arid and semi-arid environments in Kenya and, (3) assess partial nutrient budgets of different soil, water and nutrient management practices using nutrient inflows and outflows. This experiment, initiated in the short rainy season of 2005, was a split plot design with 7 treatments involving combinations of tillage (tied-ridges, conventional tillage and no-till) and organic resource (1 t ha−1 manure + 1 t ha−1 crop residue and; 2 t ha−1 of manure (no crop residue) in the main plots. Chemical nitrogen fertilizer at 0 and 60 kg N ha−1 was used in sub-plots. Although average yield in no-till was by 30–65% lower than in conventional and tied-ridges during the initial two seasons, it achieved 7–40% higher yields than these tillage systems by season four. Combined application of 1 t ha−1 of crop residue and 1 t ha−1 of manure increased maize yield over sole application of manure at 2 t ha−1 by between 17 and 51% depending on the tillage system, for treatments without inorganic N fertilizer. Cumulative nutrients in harvested maize in the four seasons ranged from 77 to 196 kg N ha−1, 12 to 27 kg P ha−1 and 102 to 191 kg K ha−1, representing 23 and 62% of applied N in treatments with and without mineral fertilizer N respectively, 10% of applied P and 35% of applied K. Chemical nitrogen fertilizer application increased maize yields by 17–94%; the increases were significant in the first 3 seasons (P < 0.05). Tillage had significant effect on soil macro- (>2 mm) and micro-aggregates fractions (<250 μm >53 μm: P < 0.05), with aggregation indices following the order no-till > tied-ridges > conventional tillage. Also, combining crop residue and manure increased large macro-aggregates by 1.4–4.0 g 100 g−1 soil above manure only treatments. We conclude that even with modest organic resource application, and depending on the number of seasons of use, conservation tillage systems such as tied-ridges and no-till can be effective in improving crop yield, nutrient uptake and soil structure and that farmers are better off applying 1 t ha−1 each of crop residue and manure rather than sole manure.
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References
Bationo A, Vlek PLG (1997) The role of nitrogen fertilisers applied to food crop in the Sudano-Sahelian zone of West Africa. In: Renard G et al. (ed) Soil fertility management in West African land use systems. Proc. regional workshop Univ. Hohenheim, ICRISAT Sahelian Centre and INRAN 4–8 March 1997, Niamey, Niger. Margraf Verlag, Germany
Bationo A, Kihara J, Vanlauwe B, Waswa B, Kimetu J (2007) Soil organic carbon dynamics, functions and management in West African agro-ecosystems. Agric Syst 94:12–25
Beaudoin N, Saad JK, Van Laethem C, Machet JM, Maucorps J, Mary B (2005) Nitrate leaching in intensive agriculture in Northern France: effect of farming practices, soils and crop rotations. Agric Ecosyst Environ 111:292–310
Belay A, Gebrekidan H, Uloro Y (1998) Effect of tied ridges on grain yield response of maize (Zea mays L.) to application of crop residue and residual N and P on two soil types at Alemaya, Ethiopia. S Afr J Plant Soil 15:123–129
Blaise D, Ravindran CD (2003) Influence of tillage and residue management on growth and yield of cotton grown on a vertisol over 5 years in a semi-arid region of India. Soil Tillage Res 70:163–173
Busscher WJ, Edwards JH, Vepraskas MJ, Karlen DL (1995) Residual effects of slit tillage and subsoiling in a hardpan soil. Soil Tillage Res 35:115–123
Cameira MR, Fernando RM, Pereira LS (2003) Monitoring water and NO3-N in irrigated maize fields in the Sorraia Watershed, Portugal. Agric Water Manag 60:199–216
Dam RF, Mehdi BB, Burgess MSE, Madramootoo CA, Mehuys GR, Callum IR (2005) Soil bulk density and crop yield under eleven consecutive years of corn with different tillage and residue practices in a sandy loam soil in central Canada. Soil Tillage Res 84:41–53
Diaz-Zorita M (2000) Effect of deep-tillage and nitrogen fertilization interactions on dryland corn (Zea mays L.) productivity. Soil Tillage Res 54:11–19
Erenstein O (2003) Smallholder conservation farming in the tropics and sub-tropics: a guide to the development and dissemination of mulching with crop residues and cover crops. Agric Ecosyst Environ 100:17–37
Evans SD, Lindstrom MJ, Voorhees WB, Monscrief JF, Nelson GA (1996) Effect of subsoiling and subsequent tillage on soil bulk density, soil moisture, and con yield. Soil Tillage Res 38:35–46
Filho CC, Lourenco A, Guimaraes FM, Fonseca ICB (2002) Aggregate stability under different soil management systems in a red latosol in the state of Parana, Brazil. Soil Tillage Res 65:45–51
Gameda S, Raghavan GSV, McKyes E, Watson AK, Mehuys G (1994) Response of grain corn to subsoiling and chemical wetting of a compacted clay soil. Soil Tillage Res 29:179–187
Gebrekidan H (2003) Grain yield response of sorghum (Sorghum bicolor) to tied ridges and planting methods on entisols and vertisols of Alemaya Area, Eastern Ethiopian Highlands. J Agric Rural Dev Trop Subtrop 104:113–128
Govaerts B, Verhulst N, Sayre KD, Kienle F, Flores D, Limon-Ortega A (2009) Implementing conservation agriculture concepts for irrigated wheat based systems in Northwest Mexico: a dynamic process towards sustainable production. In: Innovations for improving efficiency, equity and environment. Lead papers for the 4th world congress on conservation agriculture held 4–7th February 2009 in New Delhi, India. 4th world congress on conservation agriculture, New Delhi, India
Goyal S, Chander K, Mundra MC, Kapoor KK (1999) Influence of inorganic fertilizers and organic amendments on soil organic matter and soil microbial properties under tropical conditions. Biol Fertil Soils 29:196–200
Hoogmoed WB (1999) Tillage for soil and water conservation in the semi-arid tropics. Doctoral Thesis, Wageningen University, Wageningen, the Netherlands
ICRAF (1995) International Centre for Research in Agroforestry: Laboratory methods of soil and plant analysis, Nairobi, Kenya
Jensen JR, Bernhard RH, Hanse S, McDonagh J, Moberg JP, Nielsen NE, Nordbo E (2003) Productivity in maize based cropping systems under various soil-water-nutrient management strategies in a semi-arid, alfisol environment in East Africa. Agric Water Manag 56:217–237
Lal R (1984) Mechanized tillage systems effects on soil erosion from an alfisol in watersheds cropped to maize. Soil Tillage Res 4:349–360
Ley GJ, Mullins CE, Lal R (1989) Hard-setting behavior of some structurally weak tropical soils. Soil Tillage Res 13:365–381
Madari B, Machado PLOA, Torres E, de Andrade AG, Valencia LIO (2005) No tillage and crop rotation effects on soil aggregation and organic carbon in a rhodic ferralsol from southern Brazil. Soil Tillage Res 80:185–200
Maroko JB, Buresh RJ, Smithson PC (1998) Soil nitrogen availability as affected by fallow-maize systems on two soils in Kenya. Biol Fertil Soils 26:229–234
Martius C, Tiessen H, Vlek PLG (2001) The management of organic matter in tropical soils: what are the priorities? Nutr Cycl Agroecosyst 61:1–6
McCarty GW, Meisinger JJ (1997) Effects of N fertilizer treatments on biologically active N pools in soils under plow and no tillage. Biol Fertil Soils 24:406–412
Miriti JM, Esilaba AO, Bationo A, Cheruiyot H, Kihumba J, Thuranira EG (2007) Tied-ridging and intergrated nutrient management options for sustainable crop production in semi-arid eastern Kenya. In: Bationo A et al (eds) Advances in integrated soil fertility management in sub-Saharan Africa: challenges and opportunities. Springer, Dordrecht
Motavalli PP, Stevens WE, Hartwig G (2003) Remediation of subsoil compaction and compaction effects on corn N availability by deep tillage and application of poultry manure in a sandy-textured soil. Soil Tillage Res 71:121–131
Mrabet R (2002) Stratification of soil aggregation and organic matter under conservation tillage systems in Africa. Soil Tillage Res 66:119–128
Nyakatawa EZ, Brown M, Maringa D (1996) Maize and sorghum yields under tied-ridges of fertilized sandy soils in semi-arid south-east lowveld of Zimbabwe. Afr Crop Sci J 4:197–206
Ogunremi LT, Lal R, Babalola O (1986) Effects of tillage and seeding methods on soil physical properties and yield of upland rice for an ultisol in southeast Nigeria. Soil Tillage Res 6:305–324
Oikeh SO, Carsky RJ, Kling JG, Chude VO, Horst WJ (2003) Differential N uptake by maize cultivars and soil nitrate dynamics under N fertilization in West Africa. Agric Ecosyst Environ 100:181–191
Olufayo A, Baldy C, Some L, Traore I (1994) Tillage effects on grain sorghum (Sorghum bicolor (L) Moench) development and plant water status in Burkina Faso. Soil Tillage Res 32:105–116
Osunbitan JA, Oyedele DJ, Adekalu KO (2005) Tillage effects on bulk density, hydraulic conductivity and strength of a loamy sand soil in southwestern Nigeria. Soil Tillage Res 82:57–64
Parkinson JA, Allen SE (1975) A wet oxidation procedure suitable for the determination of nitrogen and mineral nutrients in biological materials. Commun Soil Sci Plant Anal 6:1–11
Pascual U, Barbier EB (2006) Deprived land-use intensification in shifting cultivation: the population pressure hypothesis revisited. Agric Econ 34:155–165
Pinheiro EFM, Pereira MG, Anjos LHC (2004) Aggregate distribution and soil organic matter under different tillage systems for vegetable crops in a red latosol from Brazil. Soil Tillage Res 77:79–84
Rawitz E, Hoogmoed WB, Morin J (1986) The effect of tillage practices on crust properties, infiltration, and crop response under semi-arid conditions. In: Proceedings of international symposium on assessment of soil surface sealing and crusting, ISSS Ghent, Belgium, pp 278–284
Rockstrom J, Barron J, Fox P (2003) Water productivity in rainfed agriculture: challenges and opportunities for small holder farmers in drought prone tropical agro-ecosystems. CABI; IWMI, Wallingford, UK; Colombo, Sri Lanka
Rosolem CA, Foloni JSS, Tiritan CS (2002) Root growth and nutrient accumulation in cover crops as affected by soil compaction. Soil Tillage Res 65:109–115
Saidou A, Janssen BH, Temminghoff EJM (2003) Effects of soil properties, mulch and NPK fertilizer on maize yields and nutrient budgets on ferralitic soils in southern Benin. Agric Ecosyst Environ 100:265–273
Salazar FJ, Chadwick D, Pain BF, Hatch D, Owen E (2005) Nitrogen budgets for three cropping systems fertilised with cattle manure. Bioresour Technol 96:235–245
Scopel E, Muller B, Tostado JMA, Guerra EC, Maraux F (1998) Quantifying and modelling the effects of a light crop residue on the water balance: an application to rainfed maize in Western Mexico XVI world congress of soil science—Montpellier, France, August 1998
Six J, Elliott ET, Paustian K (2000) Soil macroaggregate turnover and microaggregate formation: a mechanism for C sequestration under no-tillage agriculture. Soil Biol Biochem 32:2099–2103
Twomlow SJ, Bruneau PMC (2000) The influence of tillage on semi-arid soil-water regimes in Zimbabwe. Geoderma 95:33–51
Vanlauwe B, Kihara J, Chivenge P, Pypers P, Coe R, Six J (2010) Agronomic use efficiency of N fertilizer in maize-based systems in sub-Saharan Africa within the context of integrated soil fertility management. Plant Soil 339:35–50
Verhulst N, Govaerts B, Verachtert E, Kienle F, Limon-Ortega A, Deckers J, Raes D, Sayre KD (2009) The importance of crop residue management in maintaining soil quality in zero tillage systems; a comparison between long-term trials in rainfed and irrigated wheat systems. In: Innovations for improving efficiency, equity and environment. Lead papers for the 4th world congress on conservation agriculture held 4–7th February 2009 in New Delhi, India. 4th world congress on conservation agriculture, New Delhi, India
Warren GP, Atwal SS, Irungu JW (1997) Soil nitrate variations under grass, sorghum and bare fallow in semi-arid Kenya. Exp Agric 33:321–333
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This work was made possible by the funding from the International Foundation for Science (IFS) to which I am greatly indebted. Thanks also to Ivan Adolwa (TSBF-CIAT) and Samuel Njoroge (Kenyatta University) for assisting with literature searches and soil fractionation.
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Kihara, J., Bationo, A., Mugendi, D.N. et al. Conservation tillage, local organic resources and nitrogen fertilizer combinations affect maize productivity, soil structure and nutrient balances in semi-arid Kenya. Nutr Cycl Agroecosyst 90, 213–225 (2011). https://doi.org/10.1007/s10705-011-9423-7
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DOI: https://doi.org/10.1007/s10705-011-9423-7