References
- Adeleke M. A., Ogunlela V. B., Olufajo O. O., Iwuafor E. N. O. (2013): Analysis of growth of intercrop species in maize (Zea mays L.) / cowpea (Vigna unguiculata L. Walp) intercropping system as influenced by crop arrangement and proportion in semi-arid Nigeria. Research Journal of Agriculture and Environmental Management 2: 412 – 419.
- Adetiloye P. O. (1989): A review of current competition indices and models for formulating component proportions in intercropping. Cassava based cropping systems research II. International Institute of Tropical Agriculture, Ibadan, Nigeria.
- Agegnehu G., Ghizaw A., Sinebo W. (2006): Yield performance and land-use efficiency of barley and faba bean mixed cropping in Ethiopian high lands. European Journal of Agronomy 25: 202 – 207.10.1016/j.eja.2006.05.002
- Alemayehu A., Tamado T., Nigusie D., Yigzaw D., Kinde T., Wortmann C. S. (2016): Maize-common bean / lupine intercrop productivity and profitability in maize-based cropping system of Northwestern Ethiopia. Ethiopian Journal of Science and Technology 9: 69 – 85.10.4314/ejst.v9i2.1
- Alom M. S., Paul N. K., Quayyum M. A. (2009): Performances of different hybrid maize (Zea mays L.) varieties under intercropping systems with groundnut (Arachis hypogaea L.). Bangladesh Journal of Agricultural Research 34: 585 – 595.10.3329/bjar.v34i4.5835
- Awal M. A., Koshi H., Ikeda T. (2006): Radiation interception and use by maize / peanut intercrop canopy. Agriculture, Forestry and Meteorology 139: 74 – 8310.1016/j.agrformet.2006.06.001
- Bhagad S. B., Chavan S. A., Zagade M. V., Dahiphale A. V. (2006): Intercropping groundnut and sweetcorn at different fertility levels and row proportions. Indian Journal of Crop Science 1: 151 – 153
- Chinaka C. C., Obiefuna J. C. (2000): Evaluation of optimum population and biological efficiency of sweet potato in sweet potato / maize intercropping system. Nigeria Agricultural Journal 31: 158 – 165.
- Dahmardeh M. A. (2013): Intercropping two varieties of maize (Zea mays L.) and peanut (Arachis hypoaea L.): Biomass yield and intercropping advantage. International Journal of Agriculture and Forestry 3: 7 – 11.
- Dahmardeh M. A., Glanbani B., Syanhsar A., Ramrodi M. (2010): The role of intercropping maize (Zea mays L.) and cowpea (Vigna unguiculata L.) on yield and soil chemical properties. African Journal of Agricultural Research 5: 631 – 636
- Dapaah H. K., Asufu-Agyei J. N., Ennin S. A., Yamoah C. (2003): Yield stability of cassava, maize, soybean and cowpea intercrops. Journal of Agricultural Science 140: 73 – 82.10.1017/S0021859602002770
- Dolijanović Ž., Oljača S., Kovačević D., Simić M, Momirović N, Jovanović Ž. (2013): Dependence of the productivity of maize and soybean intercropping systems on hybrid type and plant arrangement pattern. Genetika 45: 135–144. DOI: 10.2298/GENSR1301135D10.2298/GENSR1301135D
- Dwomon B., Quainoo A. K. (2012): Effect of spatial arrangement on the yield of maize and groundnut intercrop in the northern guinea savanna agro-ecological zone of Ghana. International Journal of Life Science Botany and Pharmaceutical Research 1: 76 – 85.
- Egbe O. M., Bar-Anyam M. N. (2011): Effects of sowing density of intercropped pigeonpea with sorghum on biomass yield and nitrogen fixation in southern guinea savanna of Nigeria. Production Agriculture and Technology 7: 1 – 14.
- Ennin S. A., Clegg M. D., Francis C. A. (2002): Resource utilization in soybean / maize intercrops. African Crop Science Journal 10: 251 – 261.
- Eskandari H., Ghanbari A. (2009): Intercropping of maize (Zea mays L.) ans cowpea (Vigna sinensis) as whole-crop forage: Effect of different planting pattern on whole dry matter production and maize forage quality. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 37: 152 – 155.
- FDALR (Federal Department of Agricultural Land Resources) (1985): The reconnaissance soil survey of Nigeria, Kaduna, Nigeria. Federal Department of Agricultural Land Resources, Kaduna, Nigeria.
- Gabastshele M. I., Marokane T. K., Mojeremane W. (2012): Effects of intercropping on the performance of maize and cowpeas in Botswana Journal of Agriculture and Forestry 2: 307 – 310. doi. org1.0.5923/j.ijaf.20120206.07.
- Ghosh P. K. (2004): Growth, yield, competition and economics of groundnut / cereal fodder intercropping systems in the semi-arid tropics of India. Field Crops Research 88: 227 – 237.10.1016/j.fcr.2004.01.015
- Ghosh P. K., Tripathi A. K., Bandyopadhyay K. K., Manna M. C. (2009): Assessment of nutrient competition and nutrient requirement in soybean / sorghum intercropping system. European Journal of Agronomy 3: 43 – 50.10.1016/j.eja.2009.03.002
- Hauggaard-Nielsen H., Ambus P., Jensen E. S. (2001): Temporal and spatial distribution of roots and competition for nitrogen in pea-barley intercrops – a field study employing P-32 technique. Plant and Soil 236: 63 – 74.10.1023/A:1011909414400
- Jeyakumaran J., Seran T. H. (2007): Studies on intercropping capsicum (Capsicum annum L.) with bushitao (Vigna unguiculata L.). Proceedings of the 6th Annual Research Session, Oct. 18 – 19, Trincomalee Campus EUSL, pp. 431 – 440.
- Jiao N. Y., Zlao C., Ning T. Y., Hou L. T., Fu G. Z., Li Z. J., Clen M. C. (2008): Effects of maize-peanut intercropping on economic yield and light response of photosynthesis. Chinese Applied Ecology 19: 981 – 985.
- Keating B. A., Carberry P. S. (1993): Resource capture and use in intercropping: solar radiation. Field Crops Research 34: 273 – 301.10.1016/0378-4290(93)90118-7
- Karuma A., Gachene C. K. K., Gicheru P. T., Mwang’ombe A. W., Mwangi H. W., Clavel D., Verhagen J., Von Kaufmann R., Francis J., Ekaya W. (2011): Effects of legume cover crop and sub-soiling on soil properties and maize (Zea mays L.) growth in semi arid area of Machakos district, Kenya. Tropical and Subtropical Agro-ecosystems 14: 237 – 243.
- Ladha J. K., Pathak H., Krupnik T. J., Six J., Van Kessel C. (2005): Efficiency of fertilizer nitrogen in cereal production: Retrospect and prospects. Advances in Agronomy 87: 85 – 156. doi:10.1016/S0065-2113(05)87003-8.10.1016/S0065-2113(05)87003-8
- Langat M. C., Okiror M. A., Ouma J. P., Gesimba R. M. (2006): The effect of intercropping groundnut (Arachis hypogea L.) with sorghum (Sorghum bicolor L. Moench) on yield and cash income. Agricultura Tropica et Subtropica 39: 87 – 91.
- Mahapatra S. C. (2011): Study of grass-legume intercropping system in terms of competitive indices and monetary advantage index under acid lateritic soil of India. American Journal of Experimental Agriculture 1: 1 – 6.10.9734/AJEA/2011/001
- Makinde A., Bello N. J., Olasantan F. O., Adebisi M. A. (2009): Hydrothermal effects on the performance of maize and cucumber intercrop in a tropical wet and dry climate in Nigeria. African Journal of Agricultural Research 4: 225 – 235.
- Mbah E. U., Ogidi E. (2012): Effect of soybean plant populations on yield and productivity of cassava and soybean grown in a cassava-based intercropping system. Tropical and Subtropical Agroecosystems 15: 241 – 248.
- Mbah E. U., Ogbodo E. N. (2013): Assessment of intercropping sweet corn (Zea mays var. saccharata) and vegetable cowpea (Vigna unguiculata (L.) Walp) using competiteive indices in the derived Savanna of Southeastern Nigeria. Journal of Biology, Agriculture and Healthcare 3: 84 – 93.
- Mead R., Willey R. W. (1980): The concept of land equivalent ratio and advantages in yield from intercropping. Experimental Agriculture 16: 217 – 218.10.1017/S0014479700010978
- Mohanty S., Paikaray N. K., Rajan A. R. (2006): Availability and uptake of phosphorus from organic manures in groundnut (Arachis hypogea L.) – corn (Zea mays L.) sequence using radio tracer technique. Geoderma 133: 225 – 230.10.1016/j.geoderma.2005.07.009
- Morris R., Garrity D. P. (1993): Resource capture and utilization in intercropping: water. Field Crop Research 34: 303 – 317.10.1016/0378-4290(93)90119-8
- Muoneke C. O., Ogwuche M. A. O., Kalu B. A. (2007): Effect of maize planting density on the performance of maize / soybean intercropping system in a guinea savanna agro-ecosystem. African Journal of Agricultural Research 2: 667 – 677.
- Nasiri A., Nourmohamadi G., Zandi P., Siavoshi M., Dastan S. (2014): Preliminary evaluations of the yield components and productivity of sole cropped and mix-intercropped sweet corn with berseem clover as influenced by various spatial arrangements. Polish Journal of Agronomy 18: 36 – 44.
- Neugschwandtner R. W., Kaul H. -P. (2015): Nitrogen uptake, use and utilization efficiency by oat-pea intercrops. Field Crop Research 179: 113 – 119.10.1016/j.fcr.2015.04.018
- Obi I. U. (2002): Statistical Methods of Detecting Differences between Treatment Means and Research Methodology. Issues in Laboratory and Field Experiments. Nsukka: AP Express publishers VED. 117 p.
- Ofori F., Stern W. R. (1987): Maize / cowpea intercrop system: effect of nitrogen fertilizer on productivity and efficiency. Field Crops Research 14: 247 – 261.10.1016/0378-4290(86)90062-6
- Ogindo H. O., Walker S. (2005): Comparison of measured changes in seasonal soil water content by rained maize-bean intercrop and component cropping in semi-arid region in southern Africa. Physics and Chemistry of the Earth, Parts A/B/C 30: 799 – 808.10.1016/j.pce.2005.08.023
- Razzaque M. A., Rafiquzzaman S., Bazzaz M. M., Ali M. A., Talukdar M. M. R. (2007): Study on the intercropping groundnut with chilli at different plant populations. Bangladesh Journal of Agricultural Research 32: 37 – 43.
- SAS Institute Inc. (2007): SAS / STAT® Users’ Guide, Ver. 8, 4th ed., Scholars Academic and Scientific Publishers, SAS Institute, Cary, North Carolina, U.S.A.
- Salehi A., Fallah S., Neugschwandtner R. W., Mehdi B., Kaul H. -P. (2018): Growth analysis and land equivalent ratio of fenugreek buckwheat intercrops at different fertilizer types. Die Bodenkultur: Journal of Land Management, Food and Environment 69: 105 – 119. www.degruyter.com/view/j/boku10.2478/boku-2018-0010
- Sarkar R. K., Pal P. K. (2004): Effect of intercropping rice (Oryza sativa) with groundnut (Arachis hypogaea) and pigeonpea (Cajanus cajan) under different row orientations on rainfed uplands. Indian Journal of Agronomy 49: 147 – 150.
- Seran T. H., Brintha I. (2010): Review on maize based intercropping. Journal of Agronomy 9: 135 – 145.10.3923/ja.2010.135.145
- Silwana T. T., Lucas E. O. (2002): The effect of planting combinations and weeding and yield of component crops of maize-bean and maize-pumpkin intercrops. Journal of Agricultural Science 138: 193–200.10.1017/S0021859601001861
- Singh S. B., Ajeigbe H. (2007): Improved cowpea-cereals based cropping systems for household food security and poverty reduction in West Africa. Journal of Crop Improvement 19: 157 – 172.10.1300/J411v19n01_08
- SPSS (Statistical Package for Social Sciences). (2010): SPSS for Windows. Release 17.0 Standard Version. Users’ guide. SPSS Inc. Chicago, USA.
- Takele E., Mekonnen Z., Tsegaye D., Abebe A. (2017): Effect of intercropping of legumes and rates of nitrogen fertilizer on yield and yield components of maize (Zea mays L.) at Arba Minch. 2017. American Journal of Plant Sciences 8: 2159 – 2179. doi. org/10.4236/ajps.2017.89145.
- Takim F. O. (2012): Advantages of maize-cowpea intercropping over sole cropping through competition indices. Journal of Agriculture and Biodiversity Research 1: 53 – 59.
- Tsubo M., Ogindo H. O., Walker S. (2004): Yield evaluation of maize-bean intercropping in a semi-arid region of South Africa. African Crop Science Journal 12: 351 – 358.
- Vanlauwe B., Kihara J., Chivenge P., Pypers P., Coe R., Six J. (2011): Agronomic use efficiency of N fertilizer in maize-based systems in Sub-Sahara Africa within the context of integrated soil fertility management. Plant and Soil 339: 35 – 50.10.1007/s11104-010-0462-7
- Vesterager J. M., Niesen N. E., Hogh-Jensen H. (2008): Effects of cropping history and phosphorus sources on yield and nitrogen fixation fixation in sole and intercropped cowpea-maize systems. Nutrient Cycling in Agroecosystems 80: 61 – 73.10.1007/s10705-007-9121-7
- Waleligh W. (2013): Sequential intercropping of common bean and mungbean with maize in southern Ethiopia. Experimental Agriculture Journal 50: 90 – 106.
- Willey R. W. (1979): Intercropping its importance and research needs part 1. Competition and yield advantages. Field Crop Abstracts 32: 1 – 10.
- Willey R. W. (1985): Evaluation and presentation of intercropping advantages. Experimental Agriculture 21: 119 – 133.10.1017/S0014479700012400
- Willey R. W. (1990): Resource use in intercropping systems. Agriculture and Water Management 17: 215 – 231.10.1016/0378-3774(90)90069-B
