Abstract
In tropical savannas where soils are generally sandy and nutrient poor, organic farming associated with enhanced soil biological activity may result in increased nutrient availability. Therefore, legumes have been introduced in the humid savanna zone of Côte d’Ivoire, owing to their ability to fix atmospheric N and to continually supply soil with great quantity of organic materials in relatively short time. The main objective of this study was to assess the influence of two legume (Cajanus cajan and Lablab purpureus) cultivations on earthworm communities and P and N availability. Trials were carried out under farmers' field conditions; C. cajan was planted on savanna soils (trial 1) while L. purpureus was established on new Chromolaena odorata-dominated fallow soils (trial 2). Native vegetations were considered as controls. Changes in soil properties (earthworm abundance and diversity, microbial biomass carbon (MBC), and plant available P and N) were assessed using the biosequential sampling. After 1 year, both the legume stands showed a significantly higher density of earthworms, compared with the respective controls. This trend was linked to an increase in the abundance of the detritivores Dichogaster baeri Sciacchitano 1952 and Dichogaster saliens Beddard 1893, and the polyhumic Stuhlmannia zielae Omodeo 1963. Equally, legume had beneficial impacts on the average number of earthworm species, the Shannon–Weaver index of diversity and MBC in savanna (trial 1). Available P and ammonium significantly increased under both legume cultivations and were significantly and concurrently linked to litter quality and earthworm activities as shown by multiple regressions. As a result, legumes could improve nutrient availability in the sandy soils of central Côte d’Ivoire by positively affecting soil biological activity and this could bring farmers to cultivate crops on savanna lands.
This is a preview of subscription content, access via your institution.



References
Anderson JM, Ingram JSI (1993) Tropical soil biology and fertility: a handbook of methods, 2nd edn. CAB International, New York
Araujo Y, Luizao FJ, Barros E (2004) Effect of earthworm addition on soil nitrogen availability, microbial biomass and litter decomposition in mesocosms. Biol Fertil Soils 39:146–152
Belote RT, Jones RH (2009) Tree leaf litter composition and nonnative earthworms influence plant invasion in experimental forest floor mesocosms. Biol Invas 11:1045–1052
Bhadauria T, Saxena KG (2010) Role of earthworms in soil fertility maintenance through the production of biogenic structures. Appl Environ Soil Sci 2010:1–7. doi:10.1155/2010/816073
Blanchart E, Lavelle P, Baudeau E, LeBissonnais Y, Valentin C (1997) Regulation of soil structure by geophageous earthworm activities in humid savannas of Côte d’Ivoire. Soil Biol Biochem 29:431–439
Blanchart E, Villenave C, Viallatoux A, Barthès B, Girardin C, Azontonde A, Feller C (2006) Long-term effect of a legume cover crop (Mucuna pruriens var. utilis) on the communities of soil macrofauna and nematofauna, under maize cultivation, in southern Benin. Eur J Soil Biol 42:136–144
Bremner JM (1965) Total nitrogen 8. In: Black A (ed) Methods of soil analysis, Agronomy 9, Part 2. American Society of Agronomy, Madison, pp 1149–1179
Chivenge P, Vanlauwe B, Six J (2010) Does the combined application of organic and mineral nutrient sources influence maize productivity? A meta-analysis. Plant Soil. doi:10.1007/s11104-010-0626-5
Colwell RK, Coddington JA (1994) Estimating terrestrial biodiversity through extrapolation. Philos Trans R Soc Lond B Biol Sci 345:101–118
Cong PT, Merckx R (2005) Improving phosphorus availability in two upland soils of Vietnam using Thithonia diversifolia H. Plant Soil 269:11–23
Craswell ET, Lefroy RDB (2001) The role and function of organic matter in tropical soils. Nutr Cycl Agroecosyst 61:7–18
Curry JP, Schmidt O (2007) The feeding ecology of earthworms—a review. Pedobiologia 50:463–477
Curry JP, Doherty P, Purvis G, Schmidt O (2008) Relationship between earthworm populations and management intensity in cattle-grazed pasture in Ireland. Appl Soil Ecol 39:58–64
Delmas J (1967) Recherches écologiques dans la savane de Lamto (Côte d’Ivoire): premier aperçu sur les sols et leur valeur agronomique. La terre et la vie 21:216–227
Dinesh R, Suryanarayana MA, Chaudhuri Ghoshal S, Sheeja TE (2004) Long term influence of leguminous cover crops on the biochemical properties of a sandy clay loam fluvientic sulfaquent in a humid tropical region of India. Soil Till Res 77:69–77
Diouf M, Baudoin E, Dieng L, Assigbetsé K, Brauman A (2010) Legume and gramineous crop residues stimulate distinct soil bacterial populations during early decomposition stages. Can J Soil Sci 90:289–293
Feller C (1995) La matière organique du sol: un indicateur de la fertilité. Application aux zones sahélienne et soudanienne. Agric Dév 8:35–41
Fofana B, Tamélokpo A, Wopereis MCS, Breman H, Mando A (2005) Nitrogen use efficiency by maize as affected by a mucuna short fallow and P application in the coastal savanna of West Africa. Nutr Cycl Agroecosyst 71:227–237
Fonte SJ, Winsome T, Six J (2009) Earthworm populations in relation to soil organic matter dynamic and management in California tomato cropping systems. Appl Soil Ecol 41:206–214
Franke AC, Schulz S, Oyewole BD, Bako S (2004) Incorporating short-season legumes and green manure crops into maize-based systems in the moist Guinea savanna of West Africa. Exp Agric 40:463–479
Gonzà lez B, Zou X (1999) Plant and litter influences on earthworm abundance and community structure in a tropical wet forest. Biotropica 31:486–493
Holford ICR (1997) Soil phosphorus: its measurement, and its uptake by plants. Aust J Soil Res 35:227–239
Huerta E, De la Cruze-Mondragon M (2006) Response of earthworm (Dichogaster saliens) to different feeding substrates. Compost Sci Util 14:211–221
Ikerra ST, Semu E, Mrema JP (2006) Combining Tithonia diversifolia and Minjingu phosphate rock for improvement of P availability and maize grain yields on a chronic acrisol in Morogoro, Tanzannia. Nutr Cycl Agroecosyst 76:249–260
Jamaludheen V, Kumar BM (1999) Litter of multipurpose trees in Kerala, India: variations in the amount, quality, decay rates and release of nutrients. For Ecol Manag 115:1–11
Jiménez JJ, Cepeda A, Decaens T, Oberson A, Friesen DK (2003) Phosphorus fractions and dynamics in surface earthworm casts under native and improved grasslands in a Colombian savanna oxisol. Soil Biol Biochem 35:715–727
Kamh M, Horst WJ, Amer F, Mostafa H, Meier P (1999) Mobilization of soil and fertilizer phosphate by cover crops. Plant Soil 211:19–27
Knapp BA, Rief A, Seeber J (2011) Microbial communities on litter of managed and abandoned alpine pastureland. Biol Fertil Soils 47:845–851
Koné WA (2009) Qualité des sols en zone de savane humide de Côte d’Ivoire: Utilisation des légumineuses herbacées comme alternative pour une valorisation des terres marginales et une agriculture durable. Université of Abobo-Adjamé, Abidjan, Dissertation
Koné WA, Tondoh EJ, Angui KTP, Bernhard-Reversat F, Loranger-Merciris G, Brunet D, Brédoumi KTS (2008a) Is soil quality improvement by legume cover crops a function of the initial soil chemical characteristics? Nutr Cycl Agroecosyst 82:89–105
Koné WA, Tondoh EJ, Bernhard-Reversat F, Loranger-Merciris G, Brunet D, Tano Y (2008b) Changes in soil biological quality under legume- and maize-based farming systems in a humid savanna of Côte d’Ivoire. Biotechnol Agron Soc Environ 12:147–155
Koutika L-S, Hauser S, Henrot J (2001) Soil organic matter assessment in natural regrowth, Pueraria phaseoloides and Mucuna pruriens fallow. Soil Biol Biochem 33:1095–1101
Koutika L-S, Hauser S, Meuteum Kamga JG, Yerima B (2004) Comparative study of soil properties under Chromolaena odorata, Pueraria phaseoloides and Calliandra calothyrsus. Plant Soil 266:315–323
Kuczak CN, Fernandes ECM, Lehmann J, Rondon MA, Luizao FJ (2006) Inorganic and organic phosphorus pools in earthworm casts (Glossoscolecidae) and a Brazilian rainforest Oxisol. Soil Biol Biochem 38:553–560
Lal R (1997) Soil carbon sequestration impacts on global climate change and food security. Science 304:1623–1627
Lata J-C, Guillaume K, Dégrange V, Abbadie L, Lensi R (2000) Relationships between root density of the African grass Hyparrhenia diplandra and nitrification at the decimetric-scale: an inhibition–stimulation balance hypothesis. Proc Biol Sci 267:595–600
Lata J-C, Dégrange V, Raynaud X, Maron P-A, Lensi R, Abbadie L (2004) Grass populations control nitrification in savanna soils. Funct Ecol 18:605–611
Lavelle P (1978) Les vers de terre de la savane de Lamto (Côte d’Ivoire): Peuplements, Populations et Fonctions dans l’écosystème. Université Paris VI, France, Dissertation
Lavelle P (1981) Stratégies de reproduction chez les vers de terre. Acta Oecol-Oecol Gen 2:117–133
Lavelle P (1997) Faunal activities and soil processes: adaptive strategies that determine ecosystem function. In: Begon M, Fitter AH (eds.), Advances in Ecological Research 27, pp 93–132
Le Bayon RC, Milleret R (2009) Effects of earthworms on phosphorus dynamics—a review. Dyn Soil Dyn Plant 3:21–27
Lee KE (1985) Earthworms: their ecology and relationships with sand land use. Academic, Sydney
Lyasse O, Tossah BK, Vanlauwe B, Diels J, Sanginga N, Merckx R (2002) Options for increasing P availabilitiy from low reactive rock phosphate. In: Vanlauwe B, Diels J, Sanginga N, Merckx R (eds) Integrated plant nutrient management in sub-Saharan Africa: from concept to practice. CABI, Wallingford, pp 225–237
Mainoo N-OK, Whalen JK, Barrington S (2008) Earthworm abundance related to soil physicochemical and microbial properties in Accra, Ghana. Afr J Agric Res 3:186–194
Mariani L, Jimenez JJ, Torres EA, Amezquita E, Decaëns T (2007) Rainfall impact effects on ageing casts of a tropical anecic earthworm. Eur J Soil Sci 58:1525–1534
Mboukou-Kimbasta I, Bernhard-Reversat F, Loumeto J-N, Ngao J, Lavelle P (2007) Understorey vegetation, soil structure and soil invertebrates in Congolensis Eucalypt plantations, with special reference to the invasive plant Chromolaena odorata and earthworm populations. Eur J Soil Biol 47:48–56
McGrath DA, Comerford NB, Duryea ML (2000) Litter dynamics and monthly fluctuations in soil phosphorus availability in an Amazonian agroforest. For Ecol Manag 131:1–3
Nelson DW, Sommers LE (1980) Total nitrogen analysis for soil and plant tissues. J Assoc Offic Anal Chem 63:770–778
Nelson DW, Sommers LE (1982) Total carbon, organic carbon, and organic matter. In: Page AL, Miller RH, Keeney DR (eds) Methods of soil analysis, Part 2. Agronomy monograph no.9. ASA/SSSA, Madison, pp 539–579
Norgrove L, Nkem JN, Hauser S (2003) Effects of residues management on earthworm surface cast production after Chromolaena odorata short fallow in the humid tropics. Pedobiologia 47:807–810
Norgrove L, Csuzdi C, Forzi F, Canet M, Gounes J (2009) Shifts in soil faunal community structure in shaded cacao agroforests and consequences for ecosystem function in Central Africa. Trop Ecol 50:71–78
Nwoke OC, Vanlauwe B, Diels J, Sanginga N, Osonubi O, Merckx R (2003) Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils. Agric Ecosyst Environ 100:285–294
Olsen SR, Sommers LE (1982) Phosphorus. In: Page AL, Miller RH, Keeney DR (eds) Methods of soil analysis, Part 2—chemical and microbiological properties. Agronomy monograph no. 9. ASA/SSSA, Madison, pp 403–430
Osunkoya OO, Perrett C (2011) Lantana camara L. (Verbenaceae) invasion effects on soil physicochemical properties. Biol Fertil Soils 47:349–355
Pielou EC (1966) The measurement of diversity in different types of biological collections. J Theor Biol 13:213–226
Scherer-Lorenzen M, Palmborg C, Prinz A, Schulze ED (2003) The role of plant diversity and composition for nitrate leaching in grasslands. Ecology 84:1539–1552
Tan KH (1996) Soil sampling, preparation, and analysis. Marcel Dekker, New York
Technicon Industrial Systems (1977) Individual/simultaneous determination of nitrogen and/or phosphorus in BD acid digests. Technicon Industrial Systems, Tarrytown
Thomas GW (1982) Exchangeable cations. In: Page AL, Miller RH, Keeney DR (eds) Methods of soil analysis, part 2. Agronomy monograph no.9. ASA/SSSA, Madison, pp 159–164
Tian G, Brussaard L, Kang BT (1993) Biological effects of plant residues with contrasting chemical under humid tropical conditions: effects on soil fauna. Soil Biol Biochem 25:731–737
Tian G, Kolawolé GO, Kang BT, Kirchhof G (2000) Nitrogen replacement indexes of legume cover crops in the derived savanna of West Africa. Plant Soil 224:287–296
Tondoh EJ (2006) Seasonal changes in earthworm diversity and community structure in Central Côte d’Ivoire. Eur J Soil Biol 42:334–340
Tondoh EJ, Lavelle P (2005) Population dynamics of Hyperiodrilus africanus (Oligochaeta, Eudrilidea). J Trop Ecol 21:1–8
Tondoh EJ, Monin ML, Tiho S, Csuzdi C (2007) Can earthworms be used as bio-indicators of land-use perturbation in semi-deciduous forest? Biol Fertil Soils 43:585–592
Tondoh EJ, Guéi AM, Okoth P, Csuzdi C (2011) Effect of land-use on the earthworm assemblages in semi-deciduous forests of Central-West Ivory Coast. Biodivers Conserv 20:169–184
Vance ED, Brookes PC, Jenkinson DS (1987) An extraction method for measuring soil microbial biomass C. Soil Biol Biochem 19:703–707
Walkley A, Black IA (1934) An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Sci 34:29–38
Acknowledgments
This study is a part of the project AJAMSA (Agriculture durable à base de jachères améliorées en zones de savanes humides de Côte d'Ivoire), funded by the French Ministry of Foreign and European Affairs through the research program AIRES-Sud, which is implemented by the Institut de Recherche pour le Développement (IRD-DSF). We are grateful to R. Orendo-Smith for his contribution in editing the text and two anonymous referees for their contribution on improving this article. We also thank Yao N’Goran and Konan N’Guessan, and the farmers of Ahérémou-2 for their participation in the project.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Koné, A.W., Edoukou, E.F., Tondoh, J.E. et al. Comparative study of earthworm communities, microbial biomass, and plant nutrient availability under 1-year Cajanus cajan (L.) Millsp and Lablab purpureus (L.) Sweet cultivations versus natural regrowths in a guinea savanna zone. Biol Fertil Soils 48, 337–347 (2012). https://doi.org/10.1007/s00374-011-0630-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00374-011-0630-9
Keywords
- Legumes
- Earthworm communities
- Microbial biomass C
- Plant available P and N
- Sandy poor soils
- Guinea savanna