Afshoon, E., Jahansuz, M.R., Hosseini, M.B., Moghaddam. H., 2018. The Effect of tillage systems and plant densities on yield and yield components of soybean cultivars in Karaj condition. Iranian Journal of Field Crop Science. 49(2), 105-113. [In Persian with English Summary].
Ahmadi, K., Abedzadeh, H. R., Abdeshah, H., Kazemeian, A. and Rafiei, M., 2018. Iranian Agricultural Statistics, 2016-2017. The Ministry of Agriculture Jihad [In Persian].
Alizadeh, A., 2004. Soil, Water, Plant Relationship (4th Ed.). University of Emam Reza Press, 470p. [In Persian].
Ashraf, M., Foolad, M.R., 2007. Roles of glycine betaine and proline in improving plant abiotic stress resistance. Environmental and Experimental Botany. 59, 206-216.
Aslam, M., Zamir, M.S.I., Afzal, I., Yaseen, M., Mubeen, M., Shoaib, A., 2013. Drought stress, its effect on maize production and development of drought tolerance through potassium application. Cercetări Agronomice în Moldova. 46, 99-114.
Cabrera, R.I., 2003. Nitrogen balance for two container-grown woody ornamental plants. Scientia Horticulturae. 97, 297-308.
Condon, A.G., Richards, R.A., Rebetzke, G.J., Farquhar, G.D., 2004. Breeding for high water-use efficiency. Journal of Experimental Botany. 55, 2447-2460.
Dehghanian, S.I., Afzalinia, S., 2018. Water productivity and corn yield in corn-wheat rotation affected by irrigation and tillage methods. Journal of Water Research in Agriculture (Soil and Water Sci.). 32(1), 15-28. [In Persian with English summary].
Emam Y, Maghsoudi K, Moghimi N, 2014. Effect of water stress and nitrogen levels on yield of forage sorghum. Journal of Crop Production and Processing. 3,145-155. [In Persian with English summary].
Emam, Y., Niknejad, M., 2011. An Introduction to the Physiology of Crop Yield (2nd Ed). Shiraz University Press, Shiraz, Iran. [In Persian].
Guarda, G., Padovan, S., Delogu, G., 2004. Grain yield, nitrogen-use efficiency and baking quality of old and modern Italian bread-wheat cultivars grown at different nitrogen levels. European Journal of Agronomy. 21(2), 181-192.
Halvorson, A.D., Mosier, A.R., Reule, C.A., Bausch, W.C., 2006. Nitrogen and tillage effects on irrigated continuous corn yields. Agronomy Journal. 98(1), 63-71.
Husnjak, S., Filipovic, D., Kosutic, S., 2002. Influence of different tillage systems on soil physical properties and crop yield. Rostlinna Vyroba. 48, 249-254.
Ibrahim, M., Zeid, N.A., Semary, E., 2001. Response of two differentially drought. Tolerant varieties of maize to drought stress. Pakistan Journal of Biological Sciences. 4(7), 779-784.
Jaleel, C.A., Manivannan, P., Wahid, A., Farooq, M., Al-Juburi, H.J., Somasundaram, R., Panneerselvam, R., 2009. Drought stress in plants: a review on morphological characteristics and pigments composition. International Journal of Agriculture and Biology. 11, 100-105.
Jat, M.L., Sharma, S.K., Rai, H.K., Srivastava, A., Gupta, R.K., 2006. Effect of tillage on performance of winter maize in northern India. In Proceedings of Maize Association of Australia, 6th Triennial Conference Darlington Point, Griffith, NSW, Australia. pp. 21-23.
Kalamian, S., Modares, S.S., Sepehri, A., 2006. Effect of water deficit at vegetative and reproductive growth stage in leafy and commercial hybrids of maize. Agricultural Research. 5, 38-53. [In Persian with English summary].
Karam, F., Masaad, R., Sfeir, T., Mounzer, O. Rouphael, Y., 2005. Evapotranspiration and seed yield of field grown soybean under deficit irrigation conditions. Agricultural Water Management. 75, 226-244.
Kassam, A., Friedrich, T. and Derpsch, R., 2019. Global spread of conservation agriculture. International Journal of Environmental Studies, 76(1), 29-51.
Lack, Sh., Naderi, A., Siadat, S.A., Aieneband, A., Noormohamadi, G., Musavi, S.H., 2008. Effect of different levels of irrigation, nitrogen and plant density on yield, components yield and Remobilization of seed corn in the weather condations of in Khuzestan. Journal of Agricultural Sciences and Natural Resources. 42, 1-14. [In Persian with English summary].
McWilliams, D., 2002. Drought strategies for corn and grain sorghum. New Mexico State University, Cooperative Extension Service, College of Agriculture and Home Economics.
Modhej, A., Naderi, A., Emam, Y., Aynehband, A., Normohammadi, Gh., 2009. Effect of different nitrogen levels on grain yield, grain protein content and agronomic nitrogen use efficiency in wheat genotypes under optimum and post-anthesis heat stress conditions. Seed and Plant Improvement. 25, 353-371. [In Persian with English summary].
Morrison, J.E., Gerik, T.J., Chichester, F.W., Martin, J.R., Chandler, J.M., 1990. A no-tillage farming system for clay soils 1. Journal of Production Agriculture. 3, 219-227.
Mousayi, S.Gh. R., Mirhadi, S.M.J., Siadat, S. A.A., Nourmohammadi, Gh., Darvishi, F. 2009. Effect of drought stress and nitrogen levels on yield and water Use efficiency of millet and sorghum. Journal of New Agricultural. 5, 101-114. [In Persian with English summary].
Nabipour, M., Meskarbashee, M., Yousefpour, H., 2007. The effect of water deficit on yield and yield components of safflower (Carthamus tinctorius L.). Pakistan Journal of Biological Sciences. 10, 421-426.
Norwood, C.A., 2000. Water use and yield of limited-irrigated and dryland corn. Soil Science Society of America Journal. 64, 365-370.
Orfanou, A., Pavlou, D., Porter, W.M., 2019. Maize yield and irrigation applied in conservation and conventional tillage at various plant densities. Water. 11, 1726.
Rahman, M.U., Gul, Sh., Ahmad, I., 2004. Effects of water stress on growth and photosynthetic pigments of corn (Zea mays L.) cultivars. International Journal of Agriculture and Biology. 4, 652-655.
Pikul, J.L., Hammack, L., Riedell, W.E., 2005. Corn yield, nitrogen use, and corn rootworm infestation of rotations in the northern Corn Belt. Agronomy Journal. 97(3), 854-863.
Ram, H., Kler, D.S., Singh, Y. Kumar, K., 2010. Productivity of maize (Zea mays) wheat (Triticum aestivum) system under different tillage and crop establishment practices. Indian Journal of Agronomy. 55, p.185.
Sharifi, P., Adeli Nasab, M., 2016. Effects of phosphorus biofertilizer on grain yield and yield components of maize (Zea mays L.) at drought stress conditions. Cereal Research. 6(1), 119-132. [In Persian with English summary].
Ruisi, P., Giambalvo, D., Saia, S., Di Miceli, G., Frenda, A.S., Plaia, A., Amato, G., 2014. Conservation tillage in a semiarid Mediterranean environment: results of 20 years of research. Italian Journal of Agronomy. 9, 1-7.
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