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Egyptian Journal of Soil Science
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(2016). Effect of Potassium and Nitrogen Fertilization on Some Macro-nutrients Utilization Efficiency by Wheat. Egyptian Journal of Soil Science, 56(3), 373-384. doi: 10.21608/ejss.2016.3173
. "Effect of Potassium and Nitrogen Fertilization on Some Macro-nutrients Utilization Efficiency by Wheat". Egyptian Journal of Soil Science, 56, 3, 2016, 373-384. doi: 10.21608/ejss.2016.3173
(2016). 'Effect of Potassium and Nitrogen Fertilization on Some Macro-nutrients Utilization Efficiency by Wheat', Egyptian Journal of Soil Science, 56(3), pp. 373-384. doi: 10.21608/ejss.2016.3173
Effect of Potassium and Nitrogen Fertilization on Some Macro-nutrients Utilization Efficiency by Wheat. Egyptian Journal of Soil Science, 2016; 56(3): 373-384. doi: 10.21608/ejss.2016.3173

Effect of Potassium and Nitrogen Fertilization on Some Macro-nutrients Utilization Efficiency by Wheat

Article 1, Volume 56, Issue 3, Summer 2016, Page 373-384  XML PDF (357.83 K)
Document Type: Original Article
DOI: 10.21608/ejss.2016.3173
Receive Date: 31 May 2015,  Revise Date: 01 October 2015,  Accept Date: 01 October 2015 
Abstract
 
TO STUDY the effect of potassium and nitrogen fertilization treatments on wheat yield, P & K uptake and P & K utilization efficiency for wheat (Triticum aestivum, L.), variety Sakha 93, two field experiments were conducted on a clay saline soil at El-Serw Agricultural Research Station, Agricultural Research Center, Egypt during 2011/2012 and 2012/2013 winter seasons. The experiments were carried out in a split plot design with four replicates. Main plots were assigned to potassium applications (0, 47.4 & 94.8 kg K ha-1). The sub plots were divided by mineral nitrogen treatments as follows: 44.5, 89, 133.5, 178 and 214 kg N ha-1. Wheat yield (grain & straw) and P & K-uptake by (wheat grain & straw) increased with increasing potassium rate up to 94.8 kg K ha-1, but P & K utilization efficiency by wheat crop was decreased. Also, these results showed that 214, 178, 133.5, 89 and 44.5 kg N ha-1, respectively gave the highest values of the previous parameters except the PUtE and KUtE, where the order of values was upward with the order of the previous treatments. The interaction between 94.8 kg K ha-1 and 214 kg N ha-1 gave the highest wheat yield (grain & straw) and P & K uptake by grain and straw and gave the lowest PUtE and KUtE in both seasons. So, it is preferred to add 94.8 kg K and 214 kg N ha-1 to economic production of wheat grain and straw especially in saline soil. Also, the highest results of PUtE and KUtE in both seasons were obtained with interaction between 0 kg K ha-1 and 44.5 kg N ha-1, it indicates shortages in uptake of phosphorus & potassium with nitrogen & potassium deficiency.
 
 
Keywords
Wheat; nitrogen; potassium; fertilization; phosphorus; Efficiency
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