Abdel Motagally FMF and Metwally AK. 2014. Maximizing productivity by intercropping onion on sugar beet. Asian Journal of Crop Science, 6: 226-235.
Abdollahian-Noghabi M, Shaikholeslami R and Babaei B. 2005. Technical terms of sugar beet yield and quality. Sugar Beet Journal, 21 (1), 101-104 .
Abou Khadra SH, Shaimaa AAB, Salah EAT and Dina EEE. 2013. Effect of intercropping wheat with sugar beet on their productivity and land use. Agriculture Research Kafrelsheikh University, 39(1): 37-54.
Abou Hussein SD, Salman SR, Adel Mawgoud AMR, Ghoname AA. 2005. Productivity, quality and profit of sole or intercropping green bean (Phaseolus vulgaris L.) crop. Journal of Agronomy, 2: 151-155.
Abou Mostafa RRI, El-Abbas El, Rabie EM and Aboshady KA. 2012. Agronomic and economic evaluation for some patterns of intercropping faba bean with sugar beet under tow sowing dates. Agriculture Research Kafrelsheikh University, 38(4): 443-457.
Afsharmanesh GHR. 2013. Effect of maize and potato intercropping on yield and yield components in early spring planting in Jiroft region. Iranian Journal of Crop Sciences. 14(4): 333-345. (In Persian)
Akmal M and Janssens MJJ. 2004. Productivity and light use efficiency of perennial ryegrass with contrasting water and nitrogen supplies. Field Crops Research, 88: 143-155.
Alyari H, Shekari F and Shkari F. 2000. Oilseeds (Agronomy and physiology). Aamidi Publications. Tabriz. 182 P. (In Persian)
Amir-Mardfar R, Raei Y, Dabbagh Mohammadi-Nassab A, Khaghaninia S and Amini R. 2013. Yield and yield components of wheat as influenced by intercropping of oilseed rape and fertilizers. Journal of Biodiversity and Environmental Sciences, 3: 38-46.
Anonymous. 2015. Sugar beet cultivars. Strube D&S GmbH. Germany.
Anonymous. 2019. Food and Agriculture Organization (FAO) statistics. Available at http://www.faostat.fao.org/faostat/.
Anonymous, 2019. Statistics on total sugar production from sugar beet and sugar cane. Iranian Association of Sugar and Sugar Factories.
Arshad M and Ranamukhaarachchi SL. 2012. Effects of legume type, planting pattern and time of establishment on growth and yield of sweet sorghum-legume intercropping. Australian Journal of Crop Sciences, 6(8): 1265-1274.
Banik P, Midya A, Sarkar BK and Ghose SS. 2006. Wheat and chickpea intercropping systems in an additive series experiment: Advantages and weed smothering. European Journal of Agronomy, 24: 325-332.
Bargaz A, Isaac ME, Jensen ES and Carlsson G, 2015. Intercropping of faba bean with wheat under low water availability promotes faba bean nodulation and root growth in deeper soil layers. Procedia Environmental Sciences, 29:111 – 112.
Cao S, Luo H, Jin M, Jin S, Duan X, Zhou Y, Chen W, Liu T, Jia Q, Zhang B, Huang J, Wang X, Shang X and Sun Z, 2015. Intercropping influenced the occurrence of stripe rust and powdery mildew in wheat. Crop Protection, 70: 40-46.
Chapagain T and Riseman A. 2014. Barley–pea intercropping: Effects on land productivity, carbon and nitrogen transformations. Field Crops Research. 166: 18–25.
Cusicanqui JA and Lauer JG. 1999. Plant density and hybrid influenced on corn forage yield and quality.Agronomy Journal 91: 911-915.
Dabbagh Mohammadi-Nassab A, Amon T and Kaul H. 2011. Competition and yield in intercropping of maize and sunflower for biogas. Industrial Crops and Products, 34: 1203-1211.
Dabbagh Mohammadi-Nassab A, Javanmard A and Arzheh J. 2016. Forage production in different intercropping patterns of sorghum (Sorghum bicolor L.) with hairy vetch (Vicia villosa L.) in nitrogen fertilizer levels. Journal of sustainable Agriculture and Production Science, 27 (1): 63-83. (In Persian).
Daneshian J. 2015. Agronomy of soybean. Seed and Plant Improvement Institute. Agricultural Research, Education and Promotion Organization. Karaj. Iran. (In Persian).
Ghanbari A, Ghadiri H, Ghaffari Moghaddam M and Safari m. 2006. Evaluation of plant density and different levels of phosphorus fertilizer on agronomic traits and fruit and seed yield of pumpkins (Cucurbita pepo L.). Iranian Aromatic and Medicinal Plants Research. 22(4): 397-409.
Heba SA, Salama D, El-Karamity ES and Nawar AI. 2016. Additive intercropping of wheat, barley and faba bean with sugar beet: Impact on yield, quality and land use efficiency. Egyptian Journal of Agronomy. 38(3): 413-430.
Ibrahim M, Ayub M, Maqbool MM, Nadeem SM, Haq T, Hussain S, Ali A, lauriault LM. 2014. Forage yield components of irrigated maize-legume mixtures at varied seed ratios. Field Crop Research, 169: 140-144.
Jaggard KW, Clark CJA, Qi A. 2004. Growth of beet in 2003. British Sugar Beet Review. 72 (1): 2-4.
Jahani M, Koocheki A and Nassiri Mahallati M. 2007. Comparison of different intercropping arrangements of cumin (Cuminum cyminum) and lentil (Lens culinaris). Iranian Journal of Field Crops Research, 6(1): 67-77. (In Persian).
khajehpour M. 2004. Industrial Crops. Isfahan University of Technology Publications. Isfahan. Iran. (In Persian).
Koocheki A, Nasiri Mohalati M, Zarea Feizabadi A and Jahanbin, G. 2004. Evaluation of variability in different cropping systems of Iran. Pajouhesh-vaSazandegi 63: 70-81. (In Persian).
Manjunath MG and Salakinkop SR. 2017. Growth and yield of soybean and millets in intercropping systems. Journal of Farm Sciences, 30(3): (349-353).
Mohammadnia M, Soleimani A, Shirani-rad AM and Naderi MR. 2006. Effect of planting arrangement on quantitative and qualitative yield of two sugar beet cultivars in Eghlid region. Iranian Jounal of Crop Sciences, 12(1): 75-85. (In Persian).
Mohsenabadi GHR, Jahansooz MR, Chaichi MR, Rahimian Mashhadi H, Liaghat AM and Savaghebi GHR. 2008. Evaluation of Barley (Hordeum vulgare L.) and Vetch (Vicia dassycarpa ssp. villosa) Intercrop at Different Nitrogen Rates. J. Agric. Sci. Technol. Vol. 10: 23-31. (In Persian).
Monti M, Pellicano A, Santonoceto C, Preiti G and Pristeri A. 2016. Yield components and nitrogen use in cereal-pea intercrops in Mediterranean environment. Field Crops Research, 196: 379-388.
Omidbeigi R. 2006. Production and medical plant processing (Vol. 2). Tarahan-e-nashr press.424 p. (In Persian).
Pandita AK, Saha MH and Bali AS. 2000. Effect of row ratio in cereal-legume intercropping system on productivity and competition functions under Kashmir condition. Indian Journal of Agronomy,
45: 48-53.
Rajsawara RBR, 2002. Biomass yield, essential oil yield and essential oil composition of rose-scented geranium (Pelargonium species) as influenced by row Spacing and intercropping with cornmint (Mentha arvensis L.f. piperascens Malin. ex Holmes). Industrial Crop Products, 16: 133-144.
Rezaei-Chianeh E, Dabbagh Mohammadi Nasab A, Shakiba MR, Ghassemi Golezani K and Aharizad S. 2011. Intercropping of maize and faba bean at different plant population densities. African Journal of Agricultural Research. 7:1786-1793. (In Persian).
Rezvan bidokhti SH. (2004). Compare various combinations cultivation in mixed Maize and Beans. M.Sc. thesis, Department of Agriculture, Ferdowsi University of Mashhad. (In Persian).
Rosati A, Metcalf SG and Lampinen BD. 2004. A simple method to estimate photosynthetic radiation use efficiency of canopies. Annals of Botany. 93: 567-574.
Strydhorst SM, King JR, Lopetinsky KJ and Neil Harker K, 2008. Forage potential of intercropping barley with faba bean, lupin, or field pea. Agronomy Journal, 100: 182-190.
Tajbakhsh M, Pourmirza A. 2003. Agronomy of cereal crops. University of Urmia press. Iran. (In Persian)Vandermer JH, 1990. Intercropping in agroecology. Mc Graw Hill Publishing Company,
481-516.
Yang F, Huang S, Gao R, Liu W, Yong T, Wang X, Wu X, Yang W, 2014. Growth of soybean seedling in relay strip intercropping systems in relation to light quantity and red: far- red ratio. Field Crops Research, 155: 245-253.
Yaseen M, Singh M and Ram D. 2014. Growth, yield and economics of vetiver (Vetiveria zizanioides L. Nash) under intercropping system. Industrial Crops and Products. 61: 417-421.