1.Agegnehu, G., Ghizaw, A., and Sinebo, W. 2006. Yield performance and landuse
efficiency of barley and faba bean mixed cropping in Ethiopian highlands.
Euro. J. Agron., 25: 202-207.
2.Arzani, H. 2009. Forage quality and Daily Requirement of Grazing Animal.
Tehran Uni. Press, 354p. (In Persian)
3.Assefa, G., and Ledin, I. 2001. Effect of variety soil type and fertlizer on the
establishment growth forage yield quality and voluntary intake by cattle of oats
1396 ،and vetches cultivated in pure stands and mixtures. Anim Feed Sci. Techol., 92:
25-111.
4.Awal, M.A., Koshi, H., and Ikeda, T. 2006. Radiation interception and use by
maize/peanut intercrop canopy. J. Agric. For. Meteorol., 139: 74–83.
5.Awal, M.A., Pramanik, M.H.R., and Hossen, M.A. 2007. Interspecies
competition growth and yield in barley peanut intercropping. Asian J. Plant Sci.,
6: 577-584.
6.Ayub, M., Tahir, M., Nadeem, M.A., Zubair, M.A., Tariq, M., and Ibrahim, A.
2010. Effect of nitrogen applications on growth, forage yield and quality of
three cluster bean varieties. Pak. J. Life Soc. Sci., 8(2): 111-116.
7.Azam Khan, M. 2002. Production efficiency of pea (pisum sativum) as affected
by inoculation phosphorus levels and intercropping. M.Sc. theses, Pakistan:
Faisalabad University.
8.Banik, P., Midya, A., Sarkar, B.K., and Ghose, S.S. 2006. Wheat and chickpea
intercropping systems in an additive series experiment: Advantages and weed
smothering. Euro. J. Agron., 24(4): 325-332.
9.Campillo, R., Jobet, C., and Undurraga, P. 2010. Effect of Nitrogen on
productivity, Grain Quality, and optimal Nitrogen rates in Winter Barley Cv
Kumpa-INIA in andisols of Southern Chili. J. Agron. Res., 70(1): 122-131.
10.Connolly, J., Goma, H.C., and Rahim, K. 2001. The information content of
indicators in intercropping research. J. Agron., 87: 191-207.
11.Corre Hellou, G., Fustec, J., and crozat, Y. 2006. Interspecific competition for
soil N and its interaction with N2 fixation, lef expansion and crop growth in peabarley
intercrops. Eur. J. Agron., 282: 195-208.
12.Ghosh, P.K. 2004. Growth, yield, competition and economics of groundnut
cereal fodder intercropping systems in the semi arid tropics of India. Field
Crops Res., 88: 227-237.
13.Hassanzadeh Gorttapeh, A., Fathollahzadeh, A., Nasrollahzadeh Asl, A., and
Akhondi, N. 2008. Agronomic nitrogen efficiency in different wheat genotypes
in west Azerbaijan province. Elec. J. Crop Pro. EJCP., 1(1): 82-100.
14.Hauggaard-Nielsen, H., Ambus, P., and Jensen, E.S. 2001. Interspecific
competition, N use and interference with weeds in pea and barley intercropping.
Field Crops Res., 70: 101–109.
15.Jafari, A., Connolly, V., Frolich, A., and Walsh, E.J. 2003. A note on estimation
of quality in perennial ryegrass by near infrared spectroscopy. Irish J. Agric.
Food Res., 42(2): 293-299.
16.Javanshir, A., Dabbagh, A., Hamidi, A., and Gholypour, M. 2000. The ecology
of Intercropping. Mashhad University Press., 222p. (In Persian)
17.Kazemini, S.A., and Ghadiri, H. 2007. Effect of Weeds-nitrogen interactions on
growth, yield of barley and organic C of soil. Agric. Sci., 38(2): 377-385.
18.Lithougidis, A.S., Vasilakoglou, I.B., Dordas, K.V., and Yiak Oulaki, M.D.
2006. Forage yield and quality of common vetch mixtures with oat and triticale
in two seedling ratios. Field crops Res., 99: 106-1130.
19.Lithourgidis, A.S., and Dordas, C.A. 2010. Forage yield, growth rate, and
nitrogen uptake of faba bean intercrops with wheat, barley, and rye in three
seeding ratios. Crop Sci., 50: 2148-2158.
20. Lithourgidis, A.S., Dordas, C.A., Damalas, C.A., and Vlachostergios, D.N.
2011. Annual intercrops: an alternative pathway for sustainable agriculture.
Aust. J. Crop Sci., 5(4): 396-410.
21.Masoero, F., Gallo, A., Zanfi, C., Giubert, G., and Spanghero, M. 2011. Effect
of nitrogen fertilization on chemical composition and rumen fermentation of
different parts of plants of three corn hybrids. Animal Feed Sci. Technol., 164:
207-216.
22.Mazaheri, D. 1998. Intercropping (2nd ed.), Tehran University Press, 262p. (In
Persian)
23.Mohammadzadeh Moghaddam. A. 2012. The investigation of forage corn (Zea
mays) to nitrogen and biologic fertilizers. M.Sc. Thesis. Gonbad Kavous
University., 95p.
24.Nakhzari Moghaddam, A. 2013. The yield and forage quality of intercropping
barley and mustard in different planting dates. Elec. J. Crop Pro. EJCP, 5(4):
173-189. (In Persian)
25.Samarajeewa, K.B.D.P., Takatsugu, H., and Shinyo, O. 2006. Finger millet
(Eleucine corocanal L. Gaertn) as a cover crop on weed control, growth and
yield of soyabean under diffrent tillage systems. Soli Tillage Res., 90: 93-99.
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