Distribution of nitrate and ammonium below furrows and ridges' and nitrogen uptake by maize in Different Rates of Urea Fertilizer application

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RANJBAR ARASH; RAHIMI KHOOB ALI; VARAVIPOUR MARYAM; EBRAHIMIAN TALESHI HAMED

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Journal: Iranian Journal of Soil and Water Research Year:2017 | Volume:48 | Issue:4 Page(s): 891-904

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Title

Distribution of nitrate and ammonium below furrows and ridges' and nitrogen uptake by maize in Different Rates of Urea Fertilizer application

Author(s)

RANJBAR ARASH | RAHIMI KHOOB ALI | VARAVIPOUR MARYAM | EBRAHIMIAN TALESHI HAMED | Issue Writer Certificate

Keywords

Nitrogen uptakeQ2

NitrateQ2

AmmoniumQ1

Furrow irrigationQ1

MaizeQ2

Abstract

Nitrate leaching under Furrow irrigation is one of the main reasons of underground water contamination. In order to use fertilizer efficiently and reduce loss of nitrogen, more detailed studies should be done about distribution of different forms of nitrogen along ridges and furrows because the solute movement is not the same in those paths. The main objective followed in this study was to scrutinize the effects of different rates of urea on Nitrogen uptake and accumulation of Nitrate and Ammonium below ridges and furrows during growing season. Maze was planted in the treatments with nitrogen rates of 0, 150 and 250 kg ha-1 following a Randomized Complete Block design of three replications. The level of dry aboveground biomass and Nitrogen uptake during growing season plus concentration of Nitrate and Ammonium in soil before and after fertilizing as well after harvesting were assessed over different depths below ridges and furrows. Results showed that depth and rate of nitrogen were two effective factors on accumulation of Nitrate and Ammonium beneath ridges and furrows. More Nitrate concentration was observed under ridges in comparison with that beneath furrows. Following fertilization, Nitrate concentration in soil under ridges and furrows decreased and increased respectively along with increase in depth. Also, it was demonstrated that Nitrogen uptake increased while agronomic nitrogen efficiency decreased by more nitrogen application. Furthermore, most Nitrate accumulation was observed below roots areas, especially under ridges, and after harvest, indicating that the probability of Nitrate leaching was very high.

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APA: Copy

RANJBAR, ARASH, RAHIMI KHOOB, ALI, VARAVIPOUR, MARYAM, & EBRAHIMIAN TALESHI, HAMED. (2017). Distribution of nitrate and ammonium below furrows and ridges' and nitrogen uptake by maize in Different Rates of Urea Fertilizer application. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 48(4 ), 891-904. SID. https://sid.ir/paper/225723/en

Vancouver: Copy

RANJBAR ARASH, RAHIMI KHOOB ALI, VARAVIPOUR MARYAM, EBRAHIMIAN TALESHI HAMED. Distribution of nitrate and ammonium below furrows and ridges' and nitrogen uptake by maize in Different Rates of Urea Fertilizer application. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2017;48(4 ):891-904. Available from: https://sid.ir/paper/225723/en

IEEE: Copy

ARASH RANJBAR, ALI RAHIMI KHOOB, MARYAM VARAVIPOUR, and HAMED EBRAHIMIAN TALESHI, “Distribution of nitrate and ammonium below furrows and ridges' and nitrogen uptake by maize in Different Rates of Urea Fertilizer application,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 48, no. 4 , pp. 891–904, 2017, [Online]. Available: https://sid.ir/paper/225723/en

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