Phosphorous and Foliar Applied Nitrogen Improved Productivity and Quality of Potato


Growth, yield and quality of potato are greatly affected by its nutritional management. Foliar application of urea reduces nitrogen losses and increases plant nitrogen use efficiency. This study was therefore planned to evaluate the effect of soil applied phosphorus (DAP) and foliar application of nitrogenous fertilizer (urea) on growth, yield and quality of potato. Experiment was comprised of four different treatments of phosphorus (DAP, 46% P) and nitrogen (urea, 46% N) including a control. Treatments were T0 (DAP 160 + Urea 300 kg/acre), T1 (DAP 160 + Urea 5 kg/acre), T2 (DAP 100 + Urea 6 kg/acre) and T3 (DAP 120 + Urea 8 kg/acre). DAP fertilizer was given as basal dressing at the time of sowing. Foliar applications of nitrogenous fertilizer (urea) were given after 30 of sowing with one week interval in five split doses. Results indicated that T3 remained better regarding productivity and quality of potato. The overall fertilizer efficacy regarding yield and quality was: T3 > T2 > T1 > T0. However, Vitamin C was found maximum in T0.

Share and Cite:

Qadri, R. , Khan, I. , Jahangir, M. , Ashraf, U. , Samin, G. , Anwer, A. , Adnan, M. and Bashir, M. (2015) Phosphorous and Foliar Applied Nitrogen Improved Productivity and Quality of Potato. American Journal of Plant Sciences, 6, 144-149. doi: 10.4236/ajps.2015.61016.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Ewing, E.E. (1997) The Physiology of Vegetable Crops (Ed: H.C. Wein). CAB Intern. UK, 295-344.
[2] Rana, Z.H. and Rehman, R.S. (1993) Policy Imperatives: Stabilization of Production and Price Swings of Potato and Onion Crops in Pakistan. The Pakistan Development Review, 32, 737-749.
[3] Trade Development Authority of Pakistan (2010) Report on Potential Markets of Potato.
[4] Malik, M.N. (1994) Horticulture. National Book Foundation, Islamabad, 269-271.
[5] Malik, N.J. (1995) Potatoes in Pakistan. Pak. Swiss Potato Development Project, Pak. Agric. Res. Council, Islamabad, Pakistan, 80-85.
[6] Wakeel, A. (2014) Critical Review of Research on Soil K and Crops’ Response to K Fertilizers in Pakistan: Perspectives and Opportunities. International Potash Institute, 37, 16-21.
[7] Tran, S.T. and Giroux, M. (1991) Effects of N Rates and Harvest Dates on the Efficiency of N-Labelled Fertilizer on Early Harvested Potatoes (Solanum tuberosum L.). Canadian Journal of Soil Science, 71, 519-532.
[8] Engelsjord, M.E., Fostad, O. and Singh, B.R. (1997) Effects of Temperature on Nutrient Release from Slow-Release Fertilizers. Nutrient Cycling in Agroecosystems, 46, 179-187.
[9] Fageria, N.K., Filho, M.P.B., Moreira, A. and Guimar, C.M. (2009) Foliar Fertilization of Crop Plants. Journal of Plant Nutrition, 32, 1044-1064.
[10] Eleiwa, M.E., Ibrahim, S.A. and Mohamed, M.F. (2012). Combined Effect of NPK Levels and Foliar Nutritional Compounds on Growth and Yield Parameters of Potato Plants (Solanum tuberosum L.). African Journal of Microbiology Reserach, 6, 5100-5109.
[11] Gooding, M.J. and Davies, W.P. (1992) Foliar Urea Fertilization of Cereals: A Review. Fertilizer Research, 32, 209-222.
[12] Millard, P. and Robinson, D. (1990) Effect of the Timing and Rate of Nitrogen Fertilization on the Growth and Recovery of Fertilizer Nitrogen within the Potato (Solanum tuberosum L.) Crop. Fertilizer Research, 21, 133-140.
[13] Jenkins, P.D. and Ali, H. (1999) Growth of Potato Cultivars in Response to Application of Phosphate Fertilizer. Annals of Applied Biology, 135, 431-438.
[14] Sanderson, J.B., MacLeod, J.A., Douglas, B., Coffin, R. and Bruulsema, T. (2003) Phosphorus Research on Potato in PEI. Acta Horticulturae, 619, 409-417.
[15] Freeman, K.L., Franz, P.R. and de Jong, R.W. (1998) Effect of Phosphorus on the Yield, Quality, and Petiolar Phosphorus Concentrations of Potatoes (cv. Russet Burbank and Kennebec) Grown in the Krasnozem and Duplex Soils of Victoria. Australian Journal of Experimental Agriculture, 38, 83-93.
[16] Maier, N.A., McLaughlin, M.J., Heap, M., Butt, M. and Smart, M.K. (2002) Effect of Current-Season Application of Calcitic Lime and Phosphorus Fertilization on Soil pH, Potato Growth, Yield, Dry Matter Content, and Cadmium Concentration. Communications in Soil Science and Plant Analysis, 33, 2145-2165.
[17] Chapman, D.H. and Parker, E.R. (1961) Determination of NPK Methods of Analysis for Soil, Plant and Waters. Pub. Div. Agri. Univ. of California, USA, 150-179.
[18] Yoshida, S., Fonao, D.A., Cock, J.H. and Gomez, K.A. (1976) Laboratory Manual for Physiological Studies of Rice. 3rd Edition, International Rice Research Institute, Los Banos.
[19] Ruck, J.A. (1961) Chemical Methods for Analysis of Fruits and Vegetables. No. 1154. Research Station Summerland, Research Branch Canada.
[20] Steel, R.G., Torrie, J.H. and Dickey, D.A. (1997) Principles and Procedures of Statistics: A Biometrical Approach. 3rd Edition, McGraw Hill Book Co., New York.
[21] Rizk, F.A., Shaheen, A.M., Singer, S.M. and Sawan, O.A. (2013) The Productivity of Potato Plants Affected by Urea Fertilizer as Foliar Spraying and Humic Acid Added with Irrigation Water. Middle East Journal of Agricultural Research, 2, 76-83.
[22] Rosen, C.J. and Bierman, P.M. (2008) Potato Yield and Tuber Set as Affected by Phosphorus Fertilization. American Journal of Potato Research, 85, 110-120.
[23] Kolota, E. and Osinska, M. (1999) Efficiency of Foliar Nutrition of Field Vegetables Grown at Different Nitrogen Rates. Proceedings of the International Conference on Environmental Problems Associated with Nitrogen Fertilization of Field Grown Vegetable Crops, Potsdam, 30 August-1 September 1999, 87-91.
[24] Yildrim, E., Guvenc, I., Turans, M. and Karatas, A. (2007) Effect of Foliar Urea Application on Quality, Growth, Mineral Uptake and Yield of Broccoli (Brassica oleracea L., var. Italica). Plant Soil and Environment, 3, 120-128.

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.