Effect of N, K and N Application Time on Yield and Uptake of Wheat Plants at North Delta

Faizy, S.E-D.A.; RezK, M. M.; Gazia, E. A. E.; Amer, Megahed

doi:10.21608/jssae.2012.54354

Cited by 2 publications

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“…The optimum rate of N, K and B fertilization is one of the important tools to conserve soil properties and improve its productivity as well as getting the maximum wheat yield. Faizy et al (2012) showed that the grain yield of wheat was increased significantly by increasing N levels and the highest grain yield (2.25 tons fed -1 ) was obtained with 120 kg N/fed. Rashed (2011) and Allam (2005) stated that the highest wheat grain and straw yields were produced by applying 90 kg N/fed.…”

Section: Introductionmentioning

confidence: 99%

Maximizing Wheat Yield Under N, K and B Fertilization

Gazia¹,

Aziz²

2013

Journal of Soil Sciences and Agricultural Engineering

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Two field experiments were conducted at Sakha Agricultural Research Station, North Delta, Egypt during two successive growing seasons (2010-2011 and 2011-2012) to study the effect of nitrogen fertilization with and without K and B application on wheat yield in addition to evaluate quantitatively the response of wheat grain yield to fertilizer application using a polynomial quadratic equation. Five N levels (0, 30, 60, 90, and 120 kg N fed-1) were applied as a main plots, with 2 levels of K (0 and 50 kg K2O fed-1) as sub-plot, and B solution at 0.1% concentration sprayed after 70 days from sowing as sub-sub plots. The cultivated wheat variety was Sakha 69. The main results could be summarized as follows: 1-Increasing N levels up to 90 kg fed-1 led to a significant increase in the grain yield. Also, the grain yield was increased with potassium application in average by 2.5 %. Foliar application of boron resulted in increasing the grain yield in average by 2.48%. 2-The estimated values of the maximum N rate (xmax) were 2.76, 2.83, 2.78 and 2.77 units of N fed-1. (one N unit = 30 kg) for the treatments of N only (A), N with B (B), N with K(C) and N with B and K(D), respectively. The estimated values of maximum wheat grain yield (Ymax) (17.051, 17.586, 17.788 and 18.140 ardab fed-1 for the four treatments, respectively) were increased by applying K and B fertilizers. 3-The economic optimum yield (Yopt) was obtained by applying the economic optimum rates (xopt). The values of xopt were 2.63, 2.70, 2.65 and 2.64 N units fed-1 for the four treatments, respectively. The values of Yopt were 17.03, 17.57, 17.76 and 18.13 ardab fed-1 for the previous mentioned treatments, respectively. The net returns of using N fertilizer were 2612.80, 2753.82, 2766.34 and 2865.10 LE fed-1 for the four treatments, respectively. Hence, it could be concluded that the maximum and optimum wheat grain yield (Ymax and Yopt) were increased by applying K and B fertilizers. 4-Relative efficiency of applied N fertilizer (EX) with different treatments could be arranged in the following descending order: D > C > B > A. The highest efficiency of soil N (exs) was obtained under treatment B. The highest value of soil N (xs) (1.486 unit fed-1) was obtained with A treatment. The contribution of applied N fertilizer increased with increasing N level and the highest value of applied N fertilizer contribution was obtained under D treatment. Also, the contribution of soil N decreased with increasing N application level up to 120 kg fed-1 (N4). The net return due to Boron spraying was 299.8 L.E fed-1. Generally it could be concluded that increasing N level up to 90 kg/fed led to a significant increase in wheat grain yield. The maximum, optimum wheat grain yield (Ymax and Yopt), N use efficiency and the net return were increased by applying K and B fertilizers. Also the contribution of soil N decreased with increasing N application level up to 120 kg fed-1 .

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Section: Introductionmentioning

confidence: 99%

Maximizing Wheat Yield Under N, K and B Fertilization

Gazia¹,

Aziz²

2013

Journal of Soil Sciences and Agricultural Engineering

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“…al., 2001). Therefore, Faizy et al (2012) revealed that increasing the level of nitrogen significantly increased wheat grain yield and the highest yield (2.25 tons /fed) was obtained with 120 kg N fed -1 . Also, the grain and straw yields of wheat were significantly increased with increasing N level up to 90 kgfed -1…”

Section: Introductionmentioning

confidence: 96%

Wheat Response to N Application Method Under Some Irrigation Systems at North Delta

Gazia¹,

Aziz²

2013

Journal of Soil Sciences and Agricultural Engineering

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N4" and 100 % soil application "N5") on wheat (var. Sakha 93) yield, N uptake, N use efficiency and soil available N remained after harvesting. The main results could be summarized as follows: 1-Surface irrigation system (I1) and N1 treatment achieved the highest values of wheat grain and straw yields, while the lowest values were recorded with subsurface drip irrigation system and N4 treatment. 2-I1 and N2 treatment gave the highest 1000 kernel weight, while I6 and N4 treatment gave the lowest value. 3-The highest values of N uptake, and N use efficiency were recorded with I1 and N1, while, the lowest values were achieved under I6 and N5. The opposite trend was observed with available nitrogen remained in soil after wheat harvest. This means surface irrigation and N fertigation increase the ability of wheat plants to N uptake from the soil and consequently increase yield. 4-The response of wheat grain yield to N application method under surface drip irrigation could be expressed by equations 1 and 2 as follow:-YSoil app = 3107.4 (N soil app.) + 56.1 (R 2 = 0.9973), (1) Yfert = 2756.2 (N fert.) + 31.7 (R 2 = 0.9991),(2) While, equations 3 and 4 summarized the response of grain yield to different N treatments under sub-surface drip irrigation as follow:-Yfert = 2478.1 (N fert.) -33.298 (R 2 = 0.9992), (3) YSoil app = 2064.3 (N soil app.) + 70.15 (R 2 = 0.9913 ), (4) Where: YSoil app = the estimated wheat grain yield (kg fed -1 ) according to the contribution ratio of N soil application. Yfert = the estimated wheat grain yield (kg fed -1 ) according to the contribution ratio N fertigation method. N soil app.= N soil application ratio (%). N fert = N fertigation ratio (%). From equation 1, 2, 3 and 4 it could be concluded that nitrogen fertilizer is preferable to add as soil application with surface drip irrigation, while N fertigation method has to be used with sub-surface drip irrigation.

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Effect of N, K and N Application Time on Yield and Uptake of Wheat Plants at North Delta

Cited by 2 publications

References 1 publication

Maximizing Wheat Yield Under N, K and B Fertilization

Maximizing Wheat Yield Under N, K and B Fertilization

Wheat Response to N Application Method Under Some Irrigation Systems at North Delta

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