Abstract
Intercropping involves the cultivation of two or more crops on the same field in both space and time. It is a farming practice that has existed throughout history and one which mimics natural diversity. Intercropping has several advantages over monocropping which include improved resource utilization of light, water and nutrients, as well as yield stability over time. It is a practice that historically contributed towards food security within communities. It offers a sustainable alternative to the more widely practiced monocropping. However, it has been widely regarded as a primitive practice and this has created a scenario whereby there was scant research done on intercropping.
Intercropping as a practice bears huge similarity with neglected crops. Neglected crops too have been regarded as “traditional” crops and have been neglected by researchers, farmers and communities. Despite that they represent a rich biodiversity which has now been lost. Additionally, similar to intercropping, neglected crops have played a historical role of food security and nutritious diets for people. In KwaZulu-Natal, South Africa, taro (Colocasia esculenta L. Schott) and bambara (Vigna subterranea L. Verdc) landraces represent neglected underutilised crops. Taro has improved in status due to recently improved access to markets. On the other hand, bambara groundnut, despite being highly nutritious, has lost its popularity amongst rural farmers of KwaZulu-Natal, South Africa.
Intercropping taro and bambara groundnut allows farmers to mimic historical diversity that existed in traditional agroecosystems. This study aimed at evaluating productivity of a taro-bambara intercrop under rainfed conditions. Field trials were planted over two summer seasons, 2010/2011 and 2011/2012, in the rural areas of KwaZulu-Natal. Treatments included taro and bambara sole crops as well as 1:1 (taro: bambara) and 1:2 intercrops. Growth and yield parameters were determined separately for each crop. Thereafter, land equivalent ratio (LER) was calculated to evaluate productivity of the intercrop. Plant height of taro, as the main crop, showed no significant increase or decrease in response to intercropping. Intercropping taro reduced leaf number. Increasing the proportion of bambara in the intercrop combinations lowered leaf number of taro in the 1:2 intercrop relative to the 1:1 intercrop. However, bambara groundnut growth was favoured by intercropping. Bambara groundnut plants were taller and had more leaves under intercropping. Yield was lower under intercropping. We showed that, compared with the added benefit of having a second crop, the extent of such reduction in taro and bambara yields were negligible. Furthermore, LER showed that intercropping taro was more productive than sole cropping. On average, for both seasons, the 1:1 intercrop had a LER of 1.53 compared with 1.23 for the 1:2 intercrop. It is concluded that intercropping taro and bambara at a ratio of 1:1 is feasible and productive under rainfed conditions.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Andrew DJ, Kassam AH (1975) The importance of multicropping in increasing world food supplies. In: Papendic RI, Sanchez PA, Triplet GP (eds) Multiple cropping, Special publication 27. American Society of Agronomy, Madison, p 10
Azam-Ali SN (2010) Fitting underutilised crops within research-poor environments: lessons and approaches. S Afr J Plant Soil 27:293–298
Azam-Ali SN, Matthews RB, Williams JH, Peacock JM (1990) Light use, water uptake and performance of individual components of sorghum groundnut intercrop. Exp Agric 26:413–427
Baldy C, Stigter CJ (1997) Agrometeorology of multiple cropping in warm climates. Science Publishers, Enfield, p 237
Barhom THI (2001) Studies on water requirements for some crops under different cropping systems. MSc thesis, Facility of Agriculture Cairo University
Baye T, Kebede H, Belete K (2001) Agronomic evaluation of Vernonia galamensis germplasm collected from Eastern Ethiopia. Ind Crops Prod 14:179–190
Black C, Chin Ong C (2000) Utilisation of light and water in tropical agriculture. Agric For Meteorol 104:25–47
da Silva EE, de Azevedo PHS, Almeida MMTB, De-Polli H, Guerra J (2008) Influence of intercropping and irrigation frequency in the leaf development and taro (Cocoyam) productivity under organic management. 16th IFOAM organic world congress, Modena, 16–20 June 2008. Archived at http://orgprints.org/12595
Dahmardeh M, Ghanbari A, Syasar B, Ramrodi M (2009) Intercropping maize (Zea mays L.) and cow pea (Vigna unguiculata L.) as a whole-crop forage: effects of planting ratio and harvest time on forage yield and quality. J Food Agric Environ 7:505–509
de la Peña RS, Melchor FM (1993) Effects of mulching and intercropping on upland taro. In: Ferentinos L (ed) Proceedings of the sustainable Taro culture for the Pacific conference. HITAHR, University of Hawaii Research Extension Series 140, Honolulu, pp 46–47
de Wit MJ, Stankiewicz J (2006) Potential changes in drainage systems with predicted precipitation changes across Africa. In: Third general assembly European Geosciences Union (EGU), Vienna. Geophys Res Abstr 8
Eybers J (2008) Retailer creates jobs with green practices. Development – Africa. http://www.ipsnews.net/news.asp?idnews=43569
Freyman S, Venkateswarlu J (1977) Intercropping on rainfed red soils of the Deccan Plateau, India. Can J Plant Sci 57:697–705
Fukai S, Trenbath BR (1993) Processes determining intercrop productivity and yields of component crops. Field Crops Res 34:247–271
Hansen JW (1996) Is agricultural sustainability a useful concept? Agric Syst 50:117–143
Hassan R (2006) Climate change and African agriculture. Policy no.28. Based on Durand (2006) Assessing the impact of climate change on crop water use in South Africa, CEEPA discussion paper no.28, CEEPA, University of Pretoria, Pretoria
Hook JE, Gascho GJ (1988) Multiple cropping for efficient use of water and nitrogen. In: Hargrove WL (ed) Cropping strategies for efficient use of water and nitrogen. American society of Agronomy, Crop Science Society of America and Soil Science Society of America, Madison, pp 7–20
Karikari SK (2003) A decade of Bambara groundnut agronomic research at the Botswana College of Agriculture. UNISWA J Agric 12:24–28
Keating BA, Carberry PS (1993) Resource capture and use in intercropping – solar-radiation. Field Crops Res 34:273–301
Lebot V (2009) Tropical root and tuber crops: Cassava, sweet potato, yams and aroids. CABI, Cambridge
Linnemann AR, Azam-Ali SN (1993) Bambara groundnut (Vigna subterranea L. Verdc). In: Williams JT (ed) Underutilised crops series. II. Vegetable and pulses. Chapman and Hall, London, pp 13–58
Lithourgidis AS, Dordas CA, Damalas CA, Vlachostergios DN (2011) Annual intercrops: an alternative pathway for sustainable agriculture. AJCS 5:396–410
Mabhaudhi T (2009) Responses of maize (Zea mays L.) landraces to water stress compared with commercial hybrids. MSc thesis, University of KwaZulu-Natal, Pietermaritzburg
Midmore DJ (1993) Agronomic modification of resource use and intercrop productivity. Field Crops Res 34:357–380
Modi AT (2003) What do subsistence farmers know about indigenous crops and organic farming? Preliminary case in KwaZulu-Natal. Dev South Afr 20:673–682
Morris RA, Garrity DP (1993) Resource capture and utilization in intercropping-water. Field Crops Res 34:303–317
Mukhala E, De Jager JM, Van Rensburg LD, Walker S (1999) Dietary nutrient deficiency in small-scale farming communities in South Africa: benefits if intercropping maize (Zea mays) and beans (Phaseolus vulgaris). Nutr Res 84:629–641
Mukurumbira LW (1985) Effects of the rate of fertiliser nitrogen and the previous grain legume on maize yields. Zimb Agric J 82:177–179
Ofori F, Stern WR (1987) Cereal-legume intercropping systems. Adv Agron 41:41–90
Ogindo HO, Walker S (2005) Comparison of measured changes in seasonal soil water content by rained maize-bean intercrop and component cropping in semi arid region. South Phys Chem Earth 30:799–808
Oseni TS (2010) Evaluation of sorghum-cowpea intercrop productivity in savanna agro-ecology using competition indices. J Agric Sci 2(3):229–234
Rao MR, Willey RW (1980) Evaluation of yield stability in intercropping: studies on sorghum/pigeonpea. Exp Agric 16:105–116
Republic of South Africa (1998) National Water Act (Act 36 of 1998)
Ruthernberg H (1971) Farming systems in the tropics. Clarendon Press, London, p 424
Sani BM, Danmowa NM, Sani YA, Jaliya MM (2011) Growth, yield and water use efficiency of maize-sorghum intercrop at Samaru, Northern Guinea Savannah, Nigeria. Niger J Basic Appl Sci 19:253–259
Silbanus S, Raynor B (1993) Intercropping Colocasia taro with black pepper (Piper nigrum) on Pohnpei. In: Ferentinos L (ed) Proceedings of the sustainable Taro culture for the Pacific conference. HITAHR, University of Hawaii Research Extension Series 140, Honolulu, pp 55–57
Sinefu F (2011) Bambara groundnut response to controlled environment and planting date associated water stress. MSc thesis, University of KwaZulu-Natal, Pietermaritzburg
Sivakumar MVK, Gommes R, Baier W (2000) Agrometeorology and sustainable agriculture. Agric For Meteorol 103:11–26
Smith ME, Francis CA (1986) Breeding for multiple cropping systems. In: Francis CA (ed) Multiple cropping systems. MacMillan Publishing Company, New York
Swanevelder CJ (1998) Bambara – food for Africa. National Department of Agriculture, Government Printer, Republic of South Africa, Pretoria
Thayamini HS, Brintha I (2010) Review on Maize based intercropping. J Agron 9:135–145
Tsubo M, Walker S, Mukhala E (2001) Comparisons of radiation use efficiency of mono-/inter-cropping systems with different row orientations. Field Crops Res 71:17–29
Walker S (2009) Contributions of intercropping to sustainable systems. In: Proceedings of a symposium on underutilised indigenous and traditional crops: agronomy and water use, University of Stellenbosch, Stellenbosch, 18–19 Jan 2009. Available on CD-ROM
Wien HC, Smithson JB (1981) The evaluation of genotypes for intercropping. In: Proceedings of the international workshop on intercropping, International Research Institute for the Semi-Arid Tropics (ICRISAT), Andhra Pradesh, 10–13 Jan 1979, pp 105–116
Willey RW (1979) Intercropping – its importance and research needs. Part 1. Competition and yield advantages. Field Crops Abstr 32:1–10
Acknowledgements
Water Research Commission of South Africa K5/1771/4 Water-Use of Drought Tolerant Crops. WRC Knowledge Review 2008–09.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer International Publishing Switzerland
About this chapter
Cite this chapter
Mabhaudhi, T., Modi, A.T. (2014). Intercropping Taro and Bambara Groundnut. In: Lichtfouse, E. (eds) Sustainable Agriculture Reviews. Sustainable Agriculture Reviews, vol 13. Springer, Cham. https://doi.org/10.1007/978-3-319-00915-5_9
Download citation
DOI: https://doi.org/10.1007/978-3-319-00915-5_9
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-00914-8
Online ISBN: 978-3-319-00915-5
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)