اتاق بازرگانی تهران (1395) دسترسی از طریق: http://www.tccim.ir/
آمارنامة کشاورزی (1394) جلد اول: محصولات زارعی، وزارت جهاد کشاورزی، معاونت برنامهریزی و اقتصادی، مرکز فناوری اطلاعات و ارتباطات.
بی‌نام (1394) بررسی آمار سطح برداشت و میزان تولید 36 سال محصولات زراعی، وزارت جهاد کشاورزی، معاونت برنامهریزی و اقتصادی، مرکز فناوری اطلاعات و ارتباطات.
بی‌نام (1394) معاونت بهبود تولیدات گیاهی،سازمان جهاد کشاورزی استان گلستان، وزارت جهاد کشاورزی.
ترابی ب، سلطانی ا، گالشی س و زینلی ا (1390) تحلیل عوامل محدودکنندة عملکرد گندم در شرایط گرگان. الکترونیک تولید گیاهان زراعی. 4(4): 17-1.
حجارپور ا، سلطانی ا و ترابی ب (1394) استفاده از آنالیز خط مرزی در مطالعات خلأ عملکرد: مطالعة موردی گندم در گرگان. الکترونیک تولید گیاهان زراعی. 8(4): 201-183.
سلطانی ا و ترابی ب (1393) طرح و تجزیة آزمایش‌های کشاورزی. انتشارات جهاد دانشگاهی مشهد. 430 ص.
Anderson W, Johansen C and Siddique KHM (2016) Addressing the yield gap in rainfed crops: a review. Agronomy for Sustainable Development. 36: 1-13.
Bruulsema T (2009) Recommendation development under 4R nutrient stewardship. Proceedings North Central Extension-Industry Soil Fertility Conference.
Casanova D, Goudriaan J, Bouma J and Epema G (1999) Yield gap analysis in relation to soil properties in direct-seeded flooded rice. Geoderma. 91: 191-216.
Connor DJ, Loomis RS and Cassman KG (2011) Crop ecology: productivity and management in agricultural systems. Cambridge University Press. 569 p.
Deihimfard R, Mahallati MN and Koocheki A (2015) Yield gap analysis in major wheat growing areas of Khorasan province, Iran, through crop modelling. Field Crops Research. 184: 28-38.
Fageria NK, Baligar VC and Jones CA (2010) Growth and mineral nutrition of field crops CRC Press. 550 p.
FAO (2016) Faostat-Trade/Crops and livestock products, Available at http://faostat3.fao.org/browse/T/TP/E (accessed 15 April 2016).
Grassini P, Hall AJ and Mercau JL (2009) Benchmarking sunflower water productivity in semiarid environments. Field Crops Research. 110: 251-262.
Huang X, Wang L, Yang L and Kravchenko AN (2008) Management effects on relationships of crop yields with topography represented by wetness index and precipitation. Agronomy Journal. 100: 1463.
Kitchen NR, Drummond ST, Lund ED, Sudduth KA and Buchleiter GW (2003) Soil Electrical Conductivity and Topography Related to Yield for Three Contrasting Soil–Crop Systems. Agronomy Journal. 95: 483-495.
Lobell DB, Cassman KG and Field CB (2009) Crop yield gaps: their importance, magnitudes, and causes. Annual Review of Environment and Resources. 34: 179-204.
Mueller ND, Gerber JS, Johnston M, Ray DK, Ramankutty N and Foley JA (2012) Closing yield gaps through nutrient and water management. Nature. 490: 254-257.
Patrignani A, Lollato RP, Ochsner TE, Godsey CB and Edwards JT (2014) Yield gap and production gap of rainfed winter wheat in the southern great plains. Agronomy Journal. 106: 1329.
Shatar TM and Mcbratney AB (2004) Boundary-line analysis of field-scale yield response to soil properties. The Journal of Agricultural Science. 142: 553-560.
Soltani A, Hajjarpour A and Vadez V (2016) Analysis of chickpea yield gap and water-limited potential yield in Iran. Field Crops Research. 185: 21-30.
Tasistro A (2012) Use of boundary lines in field diagnosis and research for Mexican farmers. Better Crops with Plant Food. 96: 11-13.
Tittonell P and Giller KE (2013) When yield gaps are poverty traps: The paradigm of ecological intensification in African smallholder agriculture. Field Crops Research. 143: 76-90.
Tittonell P, Shepherd K, Vanlauwe B and Giller K (2008) Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya—An application of classification and regression tree analysis. Agriculture, Ecosystems & Environment. 123: 137-150.
van Ittersum MK, Cassman KG, Grassini P, Wolf J, Tittonell P and Hochman Z (2013) Yield gap analysis with local to global relevance—A review. Field Crops Research. 143: 4-17.
van Wart J, van Bussel LGJ, Wolf J, Licker R, Grassini P, Nelson A, Boogaard H, Gerber J, Mueller ND, Claessens L, van Ittersum MK and Cassman KG (2013) Use of agro-climatic zones to upscale simulated crop yield potential. Field Crops Research. 143: 44-55.
Wang N, Jassogne L, van Asten PJA, Mukasa D, Wanyama I, Kagezi G and Giller KE (2015) Evaluating coffee yield gaps and important biotic, abiotic, and management factors limiting coffee production in Uganda. European Journal of Agronomy. 63: 1-11.
)