1- Ackerson R.C. 1985. Osmoregulation in cotton in response to water-stress. 3. Effects of phosphorus fertility. Plant Physiology, 77: 309-312.
2- Alloway B.J. 2008. Zinc in Soils and Crop Nutrition. Second Ed. Published by International Zinc Association (IAZ) and International Fertilizer Industry Association (IFA), France.
3- Anonymous. 2013. Hamedan province agricultural statistics. Jihade-Agriculture Organization of Hamedan, Hamedan, Iran.
4- Balemi T., and Schenk M.K. 2009. Genotypic variation of potato for phosphorus efficiency and quantification of phosphorus uptake with respect to root characteristics. Journal of Plant Nutrition and Soil Science, 172: 669-677.
5- Basu P.S., Sharma A., and Sukumaran N.P. 1998. Changes in net photosynthetic rate and chlorophyll fluorescence in potato leaves induced by water stress. Photosynthetica, 35(1):13-19.
6- Bingru H. 2001. Nutrient accumulation and associated root characteristics in response to drought stress in tall fescue cultivars. Hort Science, 36(1): 48-152.
7- Brooks A. 1986. Effects of phosphorous nutrition on ribulose-1, 5-biphjosphate carboxylase activation, photosynthetic quantum yield and amount of some Calvin cycle metabolism in spanich leaves. Australian Journal of Plant Physiology, 13: 21-237.
8- Cakmak I. 2000. Possible roles of zinc in protecting plant cells from damage by reactive oxygen species (a review). New Phytologist, 146: 185-205.
9- Chaverri B.A., and Bornemisza E. 1977. Phosphorus-zinc interactions in the potato (Solanum tuberosum L.) crop in the Pacayas area. Agronomy Costar, 1(2): 83-92.
10- Deblonde P.M.K., and Ledent J.F. 2001. Effects of moderate drought conditions on green leaf number stem height, leaf length and tuber yield of potato cultivars. Europian Journal of Agronomy, 14: 31-41.
11- Eskandari A., Khazaie H.R., Nezami A., and Kafi M. 2011. Study the effects of irrigation regimes on yield and some qualitative characteristics of three cultivars of potato (Solanum tuberosum L.). Journal of Water and Soil, 25(2): 240-247.
12- FAO. 2007. FAOSTAT. Food and Agriculture Organization of the United Nations. Available in: http://faostat.fao.org/statistics
13- Fleisher D.H., Barnaby J., Sicher R., Resop J.P., Timlin D.J., and Reddy V.R. 2012. Effects of elevated CO2 and cyclic drought on potato under varying radiation regimes. Agricultural and Forest Meterology, 171-172: 270-280.
14- Gee G.W., and Bauder J.W.C. 1986. Particle size analysis. Pp. 383-412. In A. Klute (eds). Methods of Soil Analysis: Part1. Physical and Mineralogical Methods (2end Ed.). Soil Sci. Soc. Am. Book Ser. 5. Madison, WI, USA.
15- Germ M., Kreft I., Stibilj V., and Urbanc-Bercic O. 2007. Combined effects of selenium and drought on photosynthesis and mitochondrial respiration in potato. Plant Physiology Biochemistry, 45: 162-167.
16- Gunes A., Inal A., and Bagci E.G. 2009. Recovery of bean plants from boron-induced oxidative damage by zinc supply. Russian Journal of Plant Physiology, 56(4): 503-509.
17- Havlin J.L., Beaton J.D., Tisdale S.L., and Nelson. W.L. 1999. Soil Fertility and Fertilizers: an Introduction to Nutrient Management. Prentice Hall, USA.
18- Ierna A., and Mauromicale G. 2012. Tuber yield and irrigation water productivity in early potatoes as affected by irrigation regime. Agricultural Water Management, 115: 276-284.
19- Jefferies R.A., and Mackerron D.K.L. 1993. Response of potato genotypes to drought. II. Leaf area index, growth and yield. Annals of Applied Biology, 122: 105-112.
20- Jin J., Wang G., Liu X., Pan X., Herbert S.J., and Tang C. 2006. Interaction between phosphorus nutrition and drought on grain yield, and assimilation of phosphorus and nitrogen in two soybean cultivars differing in protein concentration in grains. Journal of Plant Nutrition, 29(8): 1433-1449.
21- Jyung W.H., Ehmann A., Schlender K.K., and Scala J. 1975. Zinc nutrition and starch metabolism in Phaseolus Vulgaris L. Plant Physiology, 55: 414-420.
22- Khan H.R., McDonald G.K., and Rengel Z. 2004. Zinc fertilization and water stress affects plant water relations, stomatal conductance and osmotic adjustment in chickpea (Cicer arientinum L.). Plant and Soil, 267: 271-284.
23- Kidambi S.P., Matches A.G., and Bolger T.P. 1990. Mineral concentrations in alfalfa and sainfoin as influenced by soil moisture level. Agronomy Journal, 82: 229-236.
24- Koleli N., Eker S., and Cakmak I. 2004. Effect of zinc fertilization on cadmium toxicity in durum and bread wheat grown in zinc-deficient soil. Environmental Pollution, 131:453-459.
25- Kumar D., Singh B.P., and Kumar P. 2004. An overview of the factors affecting sugar content of potatoes. Annals of Applied Biology, 145: 247-256.
26- Lindsay W.L., and Norvell W.A. 1978. Development of a DTPA soil test for zinc, iron, manganese, and copper. Soil Science Society of American Journal, 42: 421-428.
27- Marschner H. 1995. Mineral Nutrition of Higher Plants. (2nd Ed). Academic Press, USA.
28- Masoudi F., Zardashti M.R., Abdollahi Mandoulakani B., Rasouli Sadghiani M.H., and Nazarli H. 2010. Effect of irrigation intervals on yield and plant characteristics of potato (Solanum tuberosum L.). Iranian Journal of Crop Sciences. 12(3):265-278. (in Persian with English abstract).
29- Mostofi Y., and Najafi F. 2005. Laboratory Analytical Methods in Horticultural Sience.Tehran University Press, Tehran, Iran
30- Motalebifard R., Najafi N., Oustan S., Nyshabouri M.R., and Valizadeh M. 2013. The combined effects of phosphorus and zinc on evapotranspiration, leaf water potential, water use efficiency and tuber attributes of potato under water deficit conditions. Scientia Horticulturae, 162: 31-38.
31- Motalebifard R., Najafi N., Oustan S., Nyshabouri M.R., and Valizadeh M. 2014. Effects of soil moisture, phosphorus and zinc levels on the growth attributes of potato in greenhouse conditions. Iranian Soil and Water Research Journal, 45(1):75-85. (in Persian with English abstract)
32- Nelsen C.E., and Safir G.R. 1982. Increased drought tolerance of mycorrhizal onion plants caused by improved phosphorus nutrition. Planta, 154: 407-413.
33- Olsen S.R., Cole C.V., Watanabe F.S., and Dean L.A. 1954. Estimation of available phosphorus in soil by extraction with sodium bicarbonate. USDA Circ. 939 US Gover. Prin. Office, Washington DC
34- Peck A.W., and McDonald G.K. 2010. Adequate zinc nutrition alleviates the adverse effects of heat stress in bread wheat. Plant and Soil, 337: 355-374.
35- Power J.F., and Prasad R. 1997. Soil Fertility Management for Sustainable Agriculture. CRC Press, USA.
36- Premachandra G.S., Saneoka H., Fujita K., and Ogata S. 1990. Cell membrane stability and leaf water relation as affected by phosphorus nutrition under water stress in maize. Soil Science and Plant Nutrition, 36(4):653-659.
37- Radin J.W. 1984. Stomatal responses to water stress and to abscisic acid in phosphorous deficient cotton plants. Plant Physiology, 76: 392-394.
38- Rezaei M., Zehtab-Salmasi S., Najafi N., Ghassemi-Golezani K., and Jalalikamali M. 2010. Effects of water deficit on nutrient content and grain protein of bread wheat. Journal of Food Agriculture and Environment, 8(3&4): 132-136.
39- Richards L.A., 1954. Diagnosis and Improvement of Saline and Alkali Soils. US Salinity Laboratory Staff, Agricultural Handbook No 60, USA.
40- Rodriguez D., and Goudriaan J. 1995. Effect of phosphorus and drought stress on dry-matter and phosphorus allocation in wheat. Journal of Plant Nutrition, 18(11): 2501-2517.
41- Samarah N., and Mullen R. 2004. Size distribution and mineral nutrients of soybean seeds in response to drought stress. Journal of Plant Nutrition, 27(5): 815-835.
42- Sardans J., Peñuelas J., Prieto P., and Estiarte M. 2008. Drought and warming induced changes in P and K concentration and accumulation in plant biomass and soil in a Mediterranean shrubland. Plant Soil, 306: 261-271.
43- Sawwan J., Shibli R.A., Swaidat I., and Tahat M. 2000. Phosphorus regulates osmotic potential and growth of african violet under in vitro-induced water deficit. Journal of Plant Nutrition, 23: 759-771.
44- Sharma P.N., Tripathi A., and Bisht S.S. 1995. Zinc requirement for stomatal opening in cauliflower. Plant Physiology, 107: 751-756.
45- Sparks D.L., Page A.L., Helmke P.A., Loeppert R.H., Soltanpour P.N., Tabatabaei M.A., Johnson C.T., and Sumner M.E. 1996. Methods of Soil Analysis. Part 3, Chemical Methods. Soil Sci. Soc. Am. Book Ser. 5. Madison, WI, USA.
46- Soltanpour P.N. 1969. Effect of N, P and Zn placement on yield and composition of potatoes. Agronomy Journal, 61: 288-289.
47- Tavallali V., Rahemi M., Maftoun M., Panahi B., Karimi S., Ramezanian A., and Vaezpour M. 2009. Zinc influence and salt stress on photosynthesis, water relations, and carbonic anhydrase activity in pistachio. Scientia Horticulturae, 123: 272-279.
48- Trehan S., and Grewal J. 1983. Zinc- phosphorus interaction in potato. Indian Journal of Ecology, 10(2): 215- 222.
49- Trehan S.P., and Sharma R.C. 2003. Root–shoot ratio as indicator of zinc uptake efficiency of different potato cultivars. Communication in Soil Science and Plant Analysis, 34(7&8): 919-932.
50- Waling I., Vark W.V., Houba V.J.G., and Vanderlee J.J. 1989. Soil and Plant Analysis, a Series of Syllabi. Part 7. Plant Analysis Procedures. Wageningen Agriculture University, Netherland.
51- Wang H., Liu R.L., and Jin J.Y. 2009. Effects of zinc and soil moisture on photosynthetic rate and chlorophyll fluorescence parameters of maize. Biologia Plantarum, 53(1): 191-194.
52- Waraich E.A., Amad R., Saifullah A., Ashraf M.Y., and Ehanullah R. 2011. Role of mineral nutrition in alleviation of drought stress in plants. Australian Journal of Crop Science, 5(6): 764-777.
53- WenTao M., and WeiGuo F. 2007. Effect of drought stress on mineral nutrient contents in leaves of seedlings of C. tangerina Hort., C. sinensis osbeck and C. grandis osbeck. Southwest. China Journal of Agricultural Science, 20(4): 630-633.
54- Westerman L.Z. 1990. Soil Testing and Plant Analysis. Soil Sci. Soc. Am. Book Ser. 5. Madison, WI, USA.
55- Yuncai H., and Schmidhalter U. 2005. Drought and salinity: A comparison of their effects on mineral nutrition of plants. Journal ofPlant Nutrition and Soil Science, 168:541-549.
56- Yasin-Ashraf M., Ala S.A., and Batti A. 1998. Nutritional imbalance in wheat (Triticum aestivum L.) genotypes grown at soil water stress. Acta Physiologia Plantarum, 20: 307-310.
57- Zhaohui W., Shengxiu L., Cecil V.L., and Sukhdev S.M. 2005. Effects of water deficit and supplemental irrigation on winter wheat growth, grain yield and quality, nutrient uptake, and residual mineral nitrogen in soil. Communication in Soil Science Plant Analysis, 36(1): 1405-1419.
58- Zubaidi A., McDonald G.K., and Hollamby G.J. 1999. Nutrient uptake and distribution by bread and durum wheat under drought conditions in South Australia. Australian Journal of Experimental Agriculture, 39: 721-732.