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Nitrogen Fertilizer Reduces the Impact of Sodium Chloride on Wheat Yield
Author(s) -
Ibrahim Muhi Eldeen Hussien,
Zhu Xinkai,
Zhou Guisheng,
Ali Adam Yousif Adam,
Ahmad Irshad,
Elsiddig Aboagla Mohammed Ibrahim
Publication year - 2018
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj2017.12.0742
Subject(s) - salinity , agronomy , nitrogen , soil salinity , human fertilization , fertilizer , urea , yield (engineering) , zoology , chemistry , sodium , nitrogen fertilizer , biology , ecology , materials science , organic chemistry , metallurgy
Core Ideas We examined the yield component response to N fertilization under saline conditions. Nitrogen fertilization at moderate salinity exerts a positive and effective influence. Using urea fertilizer at high salt concentration was negative or ineffective.Salinity is a growing problem worldwide, and techniques are needed to mitigate this problem. This experiment was conducted to determine if nitrogen (N) fertilizer could mitigate the adverse effects of salinity on wheat ( Triticum aestivum L.) production and yield. Two wheat varieties (Elnilein and Xumai 30) were seed into soil treated with NaCl at rates of 1.4, 2.5, 4.2, and 7.6 dS m −1 . The NaCl‐treated soils were fertilized with three urea‐N rates (0, 86, and 210 kg N ha −1 ). Spike length, number of spikelets, number of kernels per spike, kernel weight per spike, and 1000 kernel weight were affected by interactions between variety and N and by interactions between salinity and N. At the 7.6 dS m −1 salinity level, 210 kg N ha −1 increased yield by 54.7%. This study showed that N alleviated the adverse effects of NaCl. Moreover, among all N levels used in this study, 86 and 210 kg N ha −1 had similar impacts on wheat production. Across the N and salinity treatments, Xumai 30 generally had higher yields than Elnilein under different salinity and N levels. These findings suggest that cultural practices can reduce the impact of increasing salinity problems worldwide.

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