Influence of nitrogen on the behaviour of nickel in wheat |
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Authors: | B Singh Y P Dang S C Mehta |
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Institution: | (1) Department of Soils, Haryana Agricultural University, Hisar, India;(2) Queensland Wheat Research Institute, Toowoomba, Australia |
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Abstract: | A glasshouse experiment was conducted to study the effect of Ni on the growth and nutrients concentration in wheat (Triticum aestivum Cv. WH 291) in the presence and absence of applied N as urea. Responses to N application were observed up to 120 g N g–1 soil. No response to Ni was observed in the dry matter yield of wheat tops (leaves + stem) in the absence of applied N while in the presence of applied N, significant yield increases were obtained at 12.5 g Ni g–1 soil. Nickel was not toxic to wheat up to 50 g Ni g–1 soil in the presence of 120 g N g–1 soil. Nitrogen and Ni concentration in wheat tops and roots increased with increasing levels of applied N and Ni, respectively. Applied Ni had an antagonistic effect on N concentration. Similarly, N reduced the Ni concentration in the wheat tissues. Positive growth responses to Ni were associated with 22 and 15 g Ni g–1 in wheat tops, in the presence of applied N at 60 and 120 g N g–1 soil, while Ni toxicity was associated with 63, 92.5 and 112.5 g Ni g–1 in wheat tops, in the absence and presence of applied N at 60 and 120 g N g–1 soil, respectively. |
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Keywords: | dry matter yield nickel nitrogen nutrient concentration wheat roots wheat tops |
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