Government of Pakistan, “Agricultural Statistics of Pakistan (2010-11),” Government of Pakistan, Ministry of Food, Agriculture and Livestock, Economic Wing, Islamabad, 2011.
 M. A. Chowdhry, I. Rasool, I. Khaliq, T, Mehmood and M. M. Gilliani, “Genetics of Some Metric Traits in Spring Wheat under Normal and Drought Environments,” Rachis, Vol. 18, No. 1, 1999, pp. 34-39.
 I. R. Noorka, I. Khaliq, Z. Akram and S. Iqbal, “Inheritance Studies of Physio-Genetic Traits in Spring Wheat under Normal and Moisture Stress Environments,” International Journal of Agriculture and Applied Sciences, Vol. 1, No. 1, 2009, pp. 29-34.
 I. R. Noorka, S. Rehman, J. R. Haidry, I. Khaliq, S. Tabassam and M. Din, “Effect of Water Stress on Physico- Chemical Properties of Wheat (Triticum aestivum L.)” Pakistan Journal of Botany, Vol. 41, No. 6, 2009, pp. 2917-2924.
 I. R. Noorka, A. Batool, S. AlSultan, S. Tabasum and A. Ali. “Water Stress Tolerance, Its Relationship to Stem Reserve Mobilization and Potence Ratio in Spring Wheat,” American Journal of Plant Sciences, Vol. 4, No. 2, 2013, pp. 231-237. doi:10.4236/ajps.2013.42030
 M. Krizmanic, I. Liovic, A. Mijic, M. Bilandzic and G. Krizmanic, “Genetic Potential of Sunflower Hybrids in Different Agro-Ecological Conditions,” Sjemenarstvo, Vol. 20, No. 5-6, 2003, pp. 237-245.
 G. K. M. Reddy, K. S. Dangi, S. Kumar and A. V. Reddy. “Effect of Moisture Stress on Seed Yield and Quality in Sunflower,” Journal of Oilseeds Research, Vol. 20, No. 2, 2003, pp. 282-283.
 N. Iqbal, M. Ashraf and F. Azam, “Effect of Oxygenous Application of Glycine betaine on Capitulumn Size and Achene Number of Sunflower under Water Stress,” International Journal of Biology and Biotechnology, Vol. 2, No. 3, 2005, pp. 765-771.
 L. R. Stone, A. J. Schlegel, R. E. Gwin and A. H. Khan. “Response of Corn, Grain Sorghum and Sunflower to Irrigation to the High Plains of Kansas,” Agriculture and Water Management, Vol. 30, No. 3, 1996, pp. 251-259.
 E. Tolga and D. Lokman, “Yield Response of Sunflower to Water Stress under Tekirdag Conditions,” Helia, Vol. 26, No. 38, 2003, pp. 149-158.
 S. A. Kazemini, M. Edalat and A. Shekoofa, “Interaction Effects of Deficit Irrigation and Row Spacing on Sunflower Growth, Seed Yield and Oil Yield,” African Journal of Agricultural Research, Vol. 4, No.11, 2009, pp. 1165-1170.
 M. Akhtar, M. Zubair, M. Saeed and R. Ahmed, “Effect of Planting Geometry and Water Stress on Seed Yield and Quality Planted Sunflower,” Pakistan Journal of Agricultural Science, Vol. 30, No. 1, 1993, pp. 73-76.
 C. Chimenti, A. Pearson and H. Hall. “Osmotic Adjustment and Yield Maintenance under Drought in Sunflower,” Field Crops Research, Vol. 75, No. 2-3, 2002, pp. 235-246.
 H. R. Khaziaie, N. Nadjafi and M. Bannayan, “Effect of Irrigation Frequency and Planting Density on Herbage Biomass and Oil Production of Thyme Hyssop,” Industrial Crops and Production, Vol. 27, No. 3, 2008, pp. 315-321. doi:10.1016/j.indcrop.2007.11.007
 M. Mehrpouyan, G. Nazari and S. Sayfzadea, “Effect of Irrigation Stop at Different Growth Stages on Some Agronomic Traits of Sunflower under Three Plant Densities in Takestan Region, Iran,” Plant Ecophysiology, Vol. 2, 2010, pp. 137-144.
 J. Bakht, S. Mohammad, Y. Mohammad, Raziuddin and A. K. Mohammad, “Effect of Irrigation on Physiology and Yield of Sunflower Hybrids,” Pakistan Journal of Botany, Vol. 42, No. 2, 2010, pp. 1317-1326.
 M. Mirshekari, M. H. Nasser, A. Reza and R. Z. Omid, “Study the Effects of Planting Date and Low Irrigation Stress on Quantitative Traits of Spring Sunflower,” Romanian Agricultural Research, Vol. 29, 2012, pp. 189- 199.
 R. G. D. Steel, J. H. Torrie and D. A. Dicky, “Principles and Procedures of Statistics. A Biological Approach,” Mcgraw Hill Brook Co., New York, 1997, pp. 336-354.
 P. K. Jana, B. Musra and P. K. Kar, “Effect of Irrigation at Different Physiological Stages of Growth and Yield Attributes, Yield Consumptive Use and Water Use Efficiency of Sunflower,” Indian Agriculturist, Vol. 26, No. No. 1, 1982, pp. 39-42.
 E. A. Teama and A. M. Mahmood, “Response of Sunflower to Watering Regimes and Nitrogen Fertilizer,” Asian Journal of Agricultural Sciences, Vol. 25, No. 5, 1994, pp. 39-46.
 A. Ghani, M. Hussain and M. S. Qureshi, “Effect of Different Irrigation Regimes on the Growth and Yield of Sunflower,” International Journal of Agriculture and Biology, Vol. 2. No. 4, 2000, pp. 334-335.
 J. Iqbal, “Growth, Yield and Oil Contents of Sunflower as Influence by Irrigation and Nitrogen Supply,” M.Sc. Thesis, Department of Agronomy, University of Agriculture, Faisalabad, 1990.
 P. W. Unger. “Irrigation Effect on Sunflower Growth, Development and Water Use,” Field Crop Research, Vol. 7, 1983, pp. 181-194. doi:10.1016/0378-4290(83)90021-7
 I. Baksh, U. Awan and M. S. Baloch, “Effect of Various Irrigation Frequencies on Yield and Yield Components of Sunflower,” Pakistan Journal of Biological Sciences, Vol. 2, No. 1, 1999, pp. 194-195.
 R. K. Andhlae and P. N. Kalbhor, “Patterns of Dry Matter Accumulation of Sunflower as Influenced by Irrigational Schedules under Various Levels of Nitrogen Fertilization,” Journal of Maharashtra Agriculture University, Vol. 5.No. 1, 1981, pp. 9-14.
 A. R. Valad-Abadi, A. Moradi-Aghdam, J. Daneshiyan, H. R. Zakeri, M. Ghafari and M. Roshdi, “Effect of Plant Density on Plant Phenology and Some Agronomical Traits of Sunflower in Water Deficit Condition,” Plant and Ecosystem, Vol. 13, 2008, pp. 86-103.
 I. R. Noorka, “Sustainable Rural Development and Participatory Approach by On-Farm Water Management Techniques,” In: Sustainable Agricultural Development, Springer, New York, 2011, pp. 139-146.
 T. Tadesse1, N. Dechassa, W. Bayu and S. Gebeyehu, “Effects of Farmyard Manure and Inorganic Fertilizer Application on Soil Physico-Chemical Properties and Nutrient Balance in Rain-Fed Lowland Rice Ecosystem,” American Journal of Plant Sciences, Vol. 4, No. 2, 2013, pp. 309-316. doi:10.4236/ajps.2013.42041
 L. R. Gomez-Pando and A. Eguiluz-de la Barra, “Developing Genetic Variability of Quinoa (Chenopodium quinoa Willd.) with Gamma Radiation for Use in Breeding Programs,” American Journal of Plant Sciences, Vol. 4, No. 2, 2013, pp. 349-355. doi:10.4236/ajps.2013.42046
 I. R. Noorka and S. A. Shahid, “Use of Conservation Tillage System in Semiarid Region to Ensure Wheat Food Security in Pakistan,” Development in Soil Salinity Assessment and Reclamation, Springer Book, 2013.
 M. E. Safdar, I. R. Noorka, A. Tanveer, S. A. Tariq and S. Rauf, “Growth and Yield of Advanced Breeding Lines of Medium Grain Rice as Influenced by Different Transplanting Dates,” The Journal of Animal & Plant Sciences, Vol. 23, No. 1, 2013, pp. 227-231