Effect of Phosphate and Potassium Fertilizer Rates on Potato Plants Grown under Water Stress Conditions
Fadl A. Hashem; Noura M. Taha; Shaimaa H. Abd-Elrahman;
Abstract
The effect and relationship between water stress, potassium (K) and phosphorus (P) fertilizers
rates on water consumptive use, water requirements, and yield of potato cv. Valor was studied
under field conditions at Dokki Protected Cultivation Experimental Site, Agricultural Research
Center (ARC), Giza Governorate, Egypt. The study concerned with the use of different rates of K
fertilization (50, 100 and 150 kg K2O/fed) and P fertilization (50 and 100 kg P2O5/fed) under
different irrigation scheduling (100, 75 and 50% of irrigation requirements by Penman-Monteith
method) on potato crop cultivated in alluvial soil. The highest plant growth was recorded when
water irrigation level reached 75% of irrigation requirement in the presence of 100 kg P2O5/fed and
150 kg K2O/fed. Results also revealed that more or less similar values of macronutrient uptake
were found in plant leaves at different treatments. Finally, results obtained indicated that this
treatment is the most effective treatment on growth parameters also recorded the highest tuber
yield and its content from carbohydrates and protein. Thus, farmers should not supply water
irrigation of potatoes more than 75% of irrigation requirement to obtain economic tubers.
rates on water consumptive use, water requirements, and yield of potato cv. Valor was studied
under field conditions at Dokki Protected Cultivation Experimental Site, Agricultural Research
Center (ARC), Giza Governorate, Egypt. The study concerned with the use of different rates of K
fertilization (50, 100 and 150 kg K2O/fed) and P fertilization (50 and 100 kg P2O5/fed) under
different irrigation scheduling (100, 75 and 50% of irrigation requirements by Penman-Monteith
method) on potato crop cultivated in alluvial soil. The highest plant growth was recorded when
water irrigation level reached 75% of irrigation requirement in the presence of 100 kg P2O5/fed and
150 kg K2O/fed. Results also revealed that more or less similar values of macronutrient uptake
were found in plant leaves at different treatments. Finally, results obtained indicated that this
treatment is the most effective treatment on growth parameters also recorded the highest tuber
yield and its content from carbohydrates and protein. Thus, farmers should not supply water
irrigation of potatoes more than 75% of irrigation requirement to obtain economic tubers.
Other data
Title | Effect of Phosphate and Potassium Fertilizer Rates on Potato Plants Grown under Water Stress Conditions | Authors | Fadl A. Hashem; Noura M. Taha ; Shaimaa H. Abd-Elrahman | Keywords | potato plants;K fertilization;P fertilization;water regime;water and osmotic balance | Issue Date | 1-Sep-2016 | Journal | International Journal of Plant & Soil Science | Volume | 13 | Issue | 1 | Start page | 1 | End page | 13 | DOI | DOI: 10.9734/IJPSS/2016/28372 |
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