THE EFFECTS OF NITROGEN RATES AND APPLICATION TIMES ON WHEAT YIELD UNDER DRYLAND FARMING CONDITIONS

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FEIZIASL V.; VALIZADEH G.R.

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Journal: Iranian Journal of Soil Research Year:2003 | Volume:17 | Issue:1 Page(s): 29-38

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Title

THE EFFECTS OF NITROGEN RATES AND APPLICATION TIMES ON WHEAT YIELD UNDER DRYLAND FARMING CONDITIONS

Author(s)

FEIZIASL V. | VALIZADEH G.R. | Issue Writer Certificate

Keywords

WHEATQ3

NITROGENQ4

DRYLAND FARMINGQ3

RAINFED AGRICULTALQ3

Abstract

To determine the proper time of N fertilizer application for WHEAT, 2 field experiments were carried out with 3 replications in Maragheh Dryland Research Station. The first experiment had 4 treatments: N__0 (control), N__(30+30) (30 kg N ha^-1 in autumn +30 kg N ha^-1 in spring), N__60 (60 kg N ha^-1 in autumn) and N__(60+60)(60 kg N ha^-1 in autumn + 60 kg N ha^-1 in spring) replicated for four years (1992-1997). The second experiment was conducted to determine the effects of rates and times of application of urea and ammonium nitrate on the yields of WHEAT crop. Results showed that the application of 60 kg N ha^-1 (without mixing with seeds) produced the maximum grain yield. With an increase in total precipitation and seasonal rainfall, the yield increase for N__60 treatment was higher than for N__(30+30) (30 kg N ha^-1 in autumn and 30 kg N ha^-1 in spring). Grain protein yield was higher for N__60 than for split applications of NITROGEN. However, grain protein content for N__60 treatment was lower. By increasing the application of NITROGEN as topdressings, harvest index decreased significantly, a disadvantage of top-dressing for cereal production in DRYLAND FARMING.

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APA: Copy

FEIZIASL, V., & VALIZADEH, G.R.. (2003). THE EFFECTS OF NITROGEN RATES AND APPLICATION TIMES ON WHEAT YIELD UNDER DRYLAND FARMING CONDITIONS. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, 17(1), 29-38. SID. https://sid.ir/paper/16042/en

Vancouver: Copy

FEIZIASL V., VALIZADEH G.R.. THE EFFECTS OF NITROGEN RATES AND APPLICATION TIMES ON WHEAT YIELD UNDER DRYLAND FARMING CONDITIONS. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES[Internet]. 2003;17(1):29-38. Available from: https://sid.ir/paper/16042/en

IEEE: Copy

V. FEIZIASL, and G.R. VALIZADEH, “THE EFFECTS OF NITROGEN RATES AND APPLICATION TIMES ON WHEAT YIELD UNDER DRYLAND FARMING CONDITIONS,” IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, vol. 17, no. 1, pp. 29–38, 2003, [Online]. Available: https://sid.ir/paper/16042/en

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