Agricultural Statistics, 2017. Iran's Minister of Agriculture, Department of Planning and Economy. http://www.maj.ir/.
Amirshekari, H., Sorooshzadeh, A., ModaressSanavy, A., and JalaliJavaran, M. 2007. Study of effects of root temperature, corm size, and gibberellin on underground organs of saffron (Crocus sativus L.). Iranian Journal of Biology 19 (1): 5-18. (In Persian with English Summary).
Aslan, N. 2007. Application of response surface methodology and central composite rotatable design for modeling the influence of some operating variables of a multi-gravity separator for chromite concentration. Powder Technology 86: 769–776.
Behdani, M.A., and Fallahi, H.R. 2015. Saffron (Crocus sativus L.): Technical Knowledge Based on Research Approaches, University of Birjand Press. (In Persian).
Behdani, M.A., Jami-Alahmadi, M., and Akbarpour, A. 2010. Research Project: Category Ecological Approach to Optimize the Production of Saffron in Southern Khorasan, Birjand University. 107 p. )In Persian).
Behdani, M.A., Koocheki, A., NassiriMahallati, M., and Rezvani Moghaddam, P. 2005. Evaluation of quantitative relationships between saffron (Crocus sativus L.) yield and nutrition (on farm trial). Iranian Journal of Field Crops Research 3 (1): 1-14. (In Persian with English Summary).
Behdani, M.A., Koocheki, A., NassiriMahallati, M., and Rezvani Moghaddam, P. 2006. Evaluation of quantitative relationships between saffron (Crocus sativus L.) yield and nutrition (on farm trial). Iranian Journal of Field Crops Research 3: 1–14. (In Persian with English Summary).
Dokora, F.D., Matiru, V., King, M., and Phillips, D.A. 2002. Plant growth promotion in legumes and cereals by lumichrome, a rhizobial signal metabolite. In: Finan, T.M., O'Brain, M.R, layzell, D.B., Vessey, K., Newton, WE, Eds. Nitrogen Fixation: Global Perspectives. Wallingford, UK: CABI publishing. pp. 321-322.
Ghanbari, J., and Khajoei-Nejad, G.R. 2017. Effect of compost and combination of compost and biochar application on soil bulk density of planting bed and seedling emergence rate and early growth of saffron (Crocus sativus L.) ecotypes. Journal Saffron Agronomy and Technology 6 (1): 17-33. (In Persian with English Summary).
Ghobadi, F., GhorbaniJavid, M., and Sorooshzadeh, A. 2015. Effect of planting date and corm size on flower yield and physiology traits of saffron (Crocus sativus L.) under varamin plain climatic conditions. Saffron Agronomy and Technology 2 (4): 265-276. (In Persian with English Summary).
Gresta, F., Lombardo, G.M., Siracusa, L., and Ruberto, G. 2008. Effect of mother corm dimension and sowing time on stigma yield, daughter corms and qualitative aspects of saffron (Crocus sativus L.) in a Mediterranean environment. Journal of the Science of Food and Agriculture 88: 1144–1150.
Jahan, M., and Jahani, M. 2007. The effects of chemical and organic fertilizers on saffron (Crocus sativus L.) flowering. Acta Horticulture 739: 81-86.
Khademi, K., Sepahvand, A., Siyah Mansour, R., Mohammedans, A., and President, N. 2013. Evaluation of saffron (Crocus sativus L.) in both dry and irrigated conditions in a period of six years in the city of Khorramabad. Journal of Saffron Research 2 (1): 110-119. (In Persian with English Summary).
Khorramdel, S., Rezvani Moghaddam, P., MoallemBanhangi., F., and Shabahang., J. 2018. Optimization of cow manure levels and corm weight in saffron (Crocus sativus L.) by central composite design. Journal of Saffron Research 6: 233-249. (In Persian with English Summary).
Kizilkaya, R. 2008. Yield response and nitrogen concentrations of spring wheat (Triticum aestivum) inoculated with Azotobacterchroococcum strains. Journal of Ecological Engineering 33: 150–156.
Koocheki, A., Jahani, M., Tabrizi, L., and Mohammad Abadi, A.A. 2011a. Investigation on the effect of biofertilizer, chemical fertilizer and plant density on yield and corm criteria of saffron (Crocus sativus L.). Journal of Water and Soil 25: 196-206. (In Persian with English Summary).
Koocheki, A., JamshidEyni, M., and Seyyedi, S.M. 2015. The effect of mother corm size and type of fertilizer on nitrogen use efficiency in saffron (Crocus sativus L.). Journal Saffron Agronomy and Technology 2 (4): 243-254. (In Persian with English Summary).
Koocheki, A., Seyyedi, S.M., Azizi, H., and Shahriyari, R. 2014. The effects of mother corm size, organic fertilizers and micronutrient foliar application on corm yield and phosphorus uptake of saffron (Crocus sativus L.). Journal Saffron Agronomy and Technology 2 (1): 3-16. (In Persian with English Summary).
Koocheki, A., Siahmarguei, A., Azizi., G., and Jahani, M. 2011. Effect of crop sowing and sowing depth on crop characteristics and saffron (Crocus sativus L.) behavior corms. Journal of Agroecology 3 (1): 36-49. (In Persian with English Summary).
Koocheki, A., Tabrizi, L., Jahani, M., and Mohammad Abadi, A.A. 2011. Evaluation of high corm density and three methods planting on some agronomic traits of saffron (Crocus sativus L.) and corm situation. Journal of Horticultural Science 42 (4): 379-391. (In Persian).
Koocheki, A., Tabrizi, L., Jahani, M., and Mohamad abadi, A.A. 2011. The effect of high density and depth of planting on agronomic characteristic of saffron (Crocus sativus L.) and corms behavior. Journal of Agroecology 3: 36- 40. (In Persian with English Summary).
Koocheki, A., Tabrizi, L., Jahani, M., Mohammad Abadi, A.A., and MahdaviDamghani, A.M. 2009. Performance of saffron (Crocus sativus L.) under different planting patterns and high corm density. In: 3rd International Symposium on Saffron Forthcoming Challenges in Cultivation Research and Economics. Krokos, Kozani, Greece, 20-23 May 2009, pp. 33-40.
MoallemBanhangi, F., Rezvani Moghaddam, P., Asadi, Gh., and Khorramdel, S. 2019. Effects of different amounts of corms and planting depths of corms on flower and corm yield of saffron (Crocus sativus L.). Journal Saffron Agronomy and Technology 7 (1): 55-67.
MoayediShahraki, E., Jami Al-Ahmadi, M., and Behdani, M.A. 2010. Study of energy efficiency of saffron (Crocus sativus L.) in Southern Khorasan. Journal of Agroecology 2: 55–62. (In Persian with English Summary).
NassiriMahallati, M., Koocheki, A., Amin ghafouri, A., and Mahluji Rad, M. 2015. Optimizing corm size and density in saffron (Crocus sativus L.) cultivation by central composite design. Journal Saffron Agronomy and Technology 3 (3): 161-177. (In Persian with English Summary).
NassiriMahallati, M., Koocheki, A., BoroumandRezazadeh, Z., and Tabrizi, L. 2007. Effects of corm size and storage period on allocation of assimilates in different parts of saffron plant (Crocus sativus L.). Iranian Journal of Field Crops Research 5:155-166. (In Persian with English Summary).
Renau-Morata, B., Nebauer, S.G., Sánchez, M., and Molina, R.V. 2012. Effect of corm size, waterStress and cultivation conditions on photosynthesis and biomass partitioning during the vegetative growth of saffron (Crocus sativus L.). Industry Journal of Crop Production 39: 40–46.
Rezvani Moghadam, P., Khorramdel, S., Shabahang, J., and Amin Ghafouri, A. 2013. On evaluation of the effect of planting method, weight and density on the growth and yield characteristics of saffron (Crocus sativus L.). Journal of Agroecology 1 (3): 52- 68. (In Persian with English Summary).
Rezvani Moghaddam, P., Khorramdel, S., Amin Ghafori, A., and Shabahang, J. 2013. Evaluation of growth and yield of saffron (Crocus sativus L.) affected by spent mushroom compost and corm density. Journal of Saffron Research 1 (1): 13-26.
Rezvani Moghaddam, P., Khorramdel, S., and Mollafilabi, A. 2015. Evaluation of soil physical and chemical characteristics impacts on morphological criteria and yield of saffron (Crocus sativus L.). Journal of Saffron Research 3 (2): 188-203.
Rezvani Moghaddam, P., Koocheki, A., Molafilabi, A., and Seyyedi, S.M. 2013. Effect of biological and chemical fertilizers on replacement corm and flower yield of saffron (Crocus sativus L.). Iranian Journal of Crop Science 15: 234–246. (In Persian with English Summary).
Sumner, M.E. 2000. Beneficial use of effluents, wastes, and biosolids. Journal of Soil Science Plant Annual 31 (11-14): 1701-1715.
Teimori, S., Behdani, M.A., Ghaderi, M.G., and Sadeghi, B. 2013. Investigation on the effect of organic and chemical fertilizers on morphological and agronomic of saffron (Crocus sativus L.) corm criteria. Journal of Saffron Research 1: 36-47. (In Persian with English Summary).
White, P.J., and Veneklaas, E.J. 2012. Nature and nurture: the importance of seed phosphorus content. Plant Soil. 357: 1–8.