Ahmadvand, G., Nasiri mahallati, M., and Koocheki, A. 2005. Effect of light competition and nitrogen fertilizer on canopy structure of wheat and wild oat. Journal of Agricultural Sciences and Natural Resources 12(6): 100-112. (In Persian with English Summary)
Aminpanah, H., Souroshzadeh, A., Zand, E., and Momeni, A. 2009. Investigation of light extinction coefficient and canopy structure of more and less competitiveness of rice cultivars (Oryza sativa) against Brarnyardgrass (Echinochloa crus-galli). Electronic Journal of Crop Production 2(3): 69-84. (In Persian with English Summary)
Baldwin, K.R., and Creamer, N. 2006. Cover crops for organic farms. Organic production. North Carolina Cooperative Extension Service: College of Agriculture and Life Sciences.
Carruba, A., La Torre, R., and Matranga, A. 2002. Cultivation Trials of Aromatic and Medicinal Plants in Semiarid Mediterranean Environment: Proceeding of International Conference on MAP. Acta Horticulture 576: 207-216.
Cousens, R.D., Weaver, S.E., Martin, T.D., Blair, A.M., and Wilson, J. 1991. Dynamics of competition between wild oat (Avena fatua L.) and winter cereals. Weed Research 37: 203-210.
Dadvand Sarab, M., Naghdi Badi, H., Nasri, M., Makkizadeh, M., and Omidi, H. 2008. Changes in essential oil content and yield of basil in response to different levels of nitrogen and plant density. Journal of Mecicinal Plant 3(27): 60-70. (In Persian with English Summary)
Dianat, M., Rahimian Mashhadi, H., Alizadeh, H.M., and Zand, E. 2005. Evaluation of important traits in competitive ability of wheat cultivars (Teriticum aestivum L.) against rye (Secale cereal). Pajouhesh and Sazandegi 71: 58-66. (In Persian with English Summary)
Hashemi, S.S., Zaefarian, F., Farahmandfar, E., and Bagheri Shirvan, M. 2016. Effect of cover crops on vertical distribution of leaf area and dry matter of soybean (Glycine max L.) in competition with weeds. Journal of Agroecology 8(3): 417-434. (In Persian with English Summary)
Lindquist, J.L., and Mortensen, D.A. 1998. Tolerance and velvetleaf (Abutilon theophrasti) suppressive ability of two old and two modern corn (Zea mays) hybrids. Weed Science 46: 569-574.
Mohammadi, G.R., Javanshir, A., Rahimzadeh Khoyii, F., Mohammadi, A., and Zahtab Salmasi, S. 2004. The effect of weeds interference on shoot and root growth and harvest index in chickpea. Iranian Journal of Agricultural Science 3: 51-60. (In Persian with English Summary)
Mosier, D.G., and Oliver, L.R. 1995. Common cocklebur (Xanthium strumarium) and entireleaf momingglory (Ipomoea hederacea Var. integriuscula) interference on soybean (Glycine max). Weed Science 43: 239-246.
Nazari, S. 2013. Cover crop effectiveness on weed control of corn in different planting time. Msc. Thesis of Agronomy, Sari Agricultural Sciences and Natural Resources University, Sari, Iran. (In Persian with English Summary)
Rahimi, A., Rahimian Mashhadi, H., Agha Alikhani, M., and Karimi kalaleh, M. 2006. Investigation of dry matter in canopy orientation in corn (Zea mays L.) and pigweed (Amaranthus retroflexus L.) in competition condition. The First Iranian Weed Science Congress, Tehran, Iran. 25-26 January p: 354-359. (In Persian)
Rajcan, I., Agha Alikhani, M., Swanton, C.J., and Tollenaar, M. 2002. Development of redroot pigweed is influenced by light spectral quality and quantity. Crop Science 42: 1930-1936.
Rajcan, I., and Swanton, C.I. 2001. Understanding maize-weed competition: resource competition, light quality and whole plant. Field Crops Research 71: 139-150.
Regnier, E.E., and Stoller, E.W. 1989. The effect of soybean (Glycine Max) and interferner on the canopy architecture of common cocklebur (Xanthium strumarium), jimsonweed (Datura sramonium) and velvetleaf (Abutilon theophrasti). Weed Science 37: 187-195.
Reicosky, D., and Forcella, F. 1998. Cover crop and soil quality interactions in agroecosystems. Journal of Soil and Water Conservation 53(3): 224-226.
Rezvani, M., Zaefarian, F., and Joveini, M. 2010. Response of canopy structure of soybean (Glycine max (L.) Merr.) cultivars to weed competition. Iranian Weed Science 6(2): 91-105. (In Persian with English Summary)
Saadatian, B., Ahmadvand, G., and Soleimani, F. 2012. Study of canopy structure and growth characters role of two wheat cultivars in competition, on economic threshold and yield of rye and wild mustard. Iranian Journal of Field Crops Research 9(3): 494-504. (In Persian with English Summary)
Safahani Langerodi, A., Aynehband, A., Zand, E., Nour-mohammadi, G.H., Baghestani, M.A., and Kamkar, B. 2008. Evaluation of competitive ability in some canola (Brasica napus) cultivars with wilds mustard (Sinapis arvensis) and relationship with canopy structure. Journal of Agricultural Sciences and Natural Resources 15(2): 86-98. (In Persian with English Summary)
Samaey, M., Akbary, A., and Zand, E. 2006. The study of redroot pigweed (Amaranthus retroflexus) competition and density effects on morphological characteristics, yield and yield components of soybean (Glycine max) cultivars. Journal of Agricultural Sciences (Islamic Azad University) 12: 41-55. (In Persian with English Summary)
Sanjani, S., Bagher Hosseini, M.B., Chaichi, M.R., and Rezvan Beidokhti, S. 2009. Effect of additive intercropping sorghum: cowpea on weed biomass and density in limited irrigation system. Iranian Journal of Field Crops Research 7(1): 85-95. (In Persian with English Summary)
Shams, H., Naghdibadi, H.A., Omidi, H., Rezazadeh, S.H., Souroshzadeh, A., and Seifsahandi, M. 2009. Evaluation of calcium effect on quantitiy and quality changes of shoot in borage (Borago officinalis L.). Journal of Medicinal Plants 4(8): 138-144. (In Persian with English Summary)
Sinoquet, H., and Caldwell, R.M. 1995. Estimation of Light Capture and Partitioning in Intercropping Systems. In: H. Sinoquet and P. Cruz (Eds.): Ecophysiology of Tropical Intercropping. Paris, Institute National de la Recherche Agronomique (INRA). p. 79-80.
Teasdale, J.R. 1995. Influence of narrow row/high population corn (Zea mays L.) on weed control and light transmittance: Weed Technology 9: 113-118.
Traore, S., Mason, S.C., Martin, A.R., Mortensen, D.A., and Spotanski, J.J. 2003. Velvetleaf interference on yield and growth of grain sorghum. Agronomy Journal 95: 1602-1607.
Uchino, H., Iwama, K., Jitsuyama, Y., Ichiyama, K., Sugiura, E., Yudate, T., Nakamura, S., and Gopal, J. 2012. Effect of interseeding cover crops and fertilization on weed suppression organic and rotational cropping system. 1. Stability of weed suppression over years and main crops of potato, maize and soybean. Field Crops Research 127: 9-16.
Yaghoobi, S.R., Pirdashti, H., Habibi savadkoohi, M., and Ghadamyari, S. 2009. Effect of weed free periods on canopy structure and leaf area distribution in corn (Zea mays L.). Iranian Journal of Crop Science 11: 15-24. (In Persian with English Summary)
Zaefarian, F. 2009. Ecophysiological response of corn and soybean intercropping to simultaneous competition of redroot pigweed and jimson weed: PhD Thesis. Tarbiat Modarres University, Iran. (In Persian with English Summary)
Zand, A., Koocheki, A., and Nassiri Mahallati, M. 2003. Changing of canopy structure of some wheat cultivar in 50 recent years. Journal of Agricultural Sciences 13(4): 13-26. (In Persian with English Summary)