Agegnehu, G., Ghizaw, A., & Sinebo, W. (2006). Yield performance and land-use efficiency of barley and faba bean mixed cropping in Ethiopian highlands. European Journal of Agronomy, 25(3), 202-207. https://doi.org/10.1016/j.eja.2006.05.002
Atis, I., Kotgen, K., Hatipoglu, R., Yilmaz, S., Atak, M., & Can, E. (2012). Plant density and mixture ratio effects the competition between vetch and wheat. Australian Journal of Crop Science, 6(3), 498-505.
Awal, M. A., Pramanik, M. H. R., & Hossen, M. A. (2007). Interspecies competition growth and yield in barley peanut intercropping. Asian Journal of Plant Science, 6(4), 577-584. https://doi.org/10.3923/ajps.2007.577.584
Banik, P., Midya, A., Sarkar, B. K., & Ghosh, S. S. (2006). Wheat and chickpea intercropping systems in an additive series experiment: Advantages and weeds mothering. European Journal of Agronomy, 24, 325-332. https://doi.org/10.1016/j.eja.2005.10.010
Baser Kouchebagh, S., Mirshekari, B., & farahvash, F. (2012). Improvement of corn yield by seed biofertilization and urea application. World Applied Sciences Journal, 16(9), 1239-1242.
Bedoussac, L., & Justes, E. (2010). Dynamic analysis of competition and complementarity for light and N use to understand the yield and the protein content of a durum wheat–winter pea intercrop. Plant and Soil, 330, 37-54. https://doi.org/10.1007/s11104-010-0303-8
Choi, W. J., Han, G. H., Lee, S. M., Lee, G. T., Yoon, K. S., Choi, S. M., & Ro, H. M. (2007). Impact of land-use types on nitrate concentration and N15 in unconfined groundwater in rural areas of Korea. Agriculture, Ecosystems and Environment, 120(2-4), 259–268. https://doi.org/10.1016/j.agee.2006.10.002
Dhima, K. V., Lithourgidis, A. S., Vasilakoglou, I. B., & Dordas, C. A. (2007). Competition indices of common vetch and cereal intercrops in two seeding ratio. Field Crops Research, 100(2-3),: 249-256. https://doi.org/10.1016/j.fcr.2006.07.008
Fallah, S. A. (2011). Recovery of nitrogen residue by the canola (Brassica napus) in rotation forage maize – canola. Journal of Agroecology, 1(2), 83–75. (In Persian with English Abstract)
Fallah, S. A., Baharlouie, S., & Abbasi Suraki, A. (2014). Evaluation of competitive and economic indices in canola and pea intercropping at different rates of nitrogen fertilizer. Journal of Agroecology, 6(3), 571-581. (In Persian with English Abstract). https://doi.org/10.22067/JAG.V6I3.23941
Gao, Y., Duan, A., Sun, J., Li, F., Liu, H., & Liu, Zh. (2009). Crop coefficient and water-use efficiency of winter wheat/spring maize strip intercropping. Field Crops Research, 111(1-2), 65-73.
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.
Hosseini, S. M. B., Mazaheri, D., Jahansouz, M. R., & Yazdi Samadi, B. (2003). The effects of nitrogen levels on yield and yield components of forage millet (Pennisetum americanum) and cowpea (Vigna unguiculata) in intercropping system. Journal of Pajouhesh Va Sazandegi, 16(2), 60-67. (In Persian with English Abstract)
Lamei Heravani, J. (2012). Technical and economical evaluation of mixed cropping Lathyrus with barley and triticale under dryland conditions in Zanjan province. Journal of Crop Production and Processing 2(4): 93-103.
Lamei Heravani, J. (2013). Assessment of dry forage and crude protein yields, competition and advantage indices in mixed cropping of annual forage legume crops with barley in rainfed conditions of Zanjan. Seed and Plant Production Journal 29(2):169-184. (In Persian with English Abstract)
Lithourgidis, A. S., Vlachostergios, D. N., Dordasc, C. A., & Damalas, C. A. (2011). Dry matter yield, nitrogen content, and competition in pea–cereal intercropping systems. European Journal of Agronomy 34(4): 287-294. https://doi.org/10.1016/j.eja.2011.02.007
Morgado, L., & Willey, R. W. (2003). Effects of plant population and nitrogen fertillizer on yield and efficiency of maize-bean intercropping. Pesquisa Agropecuaria Brasileira 38(11): 1257-1264.
Najafi, S., & Keshtehgar, A. (2014). Effect of intercropping on increase yield. International Research Journal of Applied and Basic Sciences 8(5): 549-552.
Nakhzari Moghaddam, A., Dehghanpour Inchehbron, O., & Rahemi Karizaki, A. (2016). The effects of nitrogen levels and intercropping pattern on forage yield and competition indices of barley and pea. Electronic Journal of Crop Production 9(1): 199-214. (In Persian with English Abstract). https://doi.org/10.22069/EJCP.2016.2964
Raftari, E., Nakhzari Moghaddam, A., Mollashahi, M., & Hosseini Moghaddam, H. (2018). The effect of nitrogen fertilizer and planting pattern on yield and competition indices of pea (Pisum sativum L.) and lettuce (Lactuca sativa L.). Journal of Agroecology. 10(2): 504-515. (In Persian with English Abstract). https://doi.org/10.22067/JAG.V10I2.61305
Rastgoo, S., Aynehband, A., & Fateh, E. (2015). Competitiveness of sesame and mung bean crops in both monocropping and intercropping systems. Journal of Agroecology 7(3): 356-367. (In Persian with English Abstract). https://doi.org/110.22067/JAG.V7I3.31213
Willey, R. M. (1979). Intercropping, its importance and research needs, competition and yield advantages. Journal of Crop Science 32: 1-10.
Yilmaz, S., Atak, M., & Erayman, M. (2008). Identification of advantages of maize legume intercropping over solitary cropping through competition incides in the east Mediterranean region. Turkish Journal of Agriculture and Forestry 32: 111-119.