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Soil Water Consumption, Water Use Efficiency and Winter Wheat Production in Response to Nitrogen Fertilizer and Tillage

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Journal PeerJ
Date 2020 May 12
PMID 32391196
Citations 3
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Abstract

Sustainability of winter wheat yield under dryland conditions depends on improving soil water stored during fallow and its efficient use. A 3-year field experiment was conducted in Loess Plateau to access the effect of tillage and N (nitrogen) rates on soil water, N distribution and water- and nitrogen-use efficiency of winter wheat. Deep tillage (DT, 25-30 cm depth) and no-tillage (NT) were operated during fallow season, whereas four N rates (0, 90, 150 and 210 kg ha) were applied before sowing. Rates of N and variable rainfall during summer fallow period led to the difference of soil water storage. Soil water storage at anthesis and maturity was decreased with increasing N rate especially in the year with high precipitation (2014-2015). DT has increased the soil water storage at sowing, N content, numbers of spike, grain number, 1,000 grain weight, grain yield, and water and N use efficiency as compared to NT. Grain yield was significantly and positively related to soil water consumption at sowing to anthesis and anthesis to maturity, total plant N, and water-use efficiency. Our study implies that optimum N rate and deep tillage during the fallow season could improve dryland wheat production by balancing the water consumption and biomass production.

Citing Articles

Study on Optimal Nitrogen Application for Different Oat Varieties in Dryland Regions of the Loess Plateau.

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Deep ploughing in the summer fallow season and optimizing nitrogen rate can increase yield, water, and nitrogen efficiencies of rain-fed winter wheat in the Loess Plateau region of China.

Zhang R, Wang P, Wang W, Ren A, Noor H, Zhong R PeerJ. 2022; 10:e14153.

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Effects of fallow tillage on winter wheat yield and predictions under different precipitation types.

Feng Y, Lin W, Yu S, Ren A, Wang Q, Noor H PeerJ. 2021; 9:e12602.

PMID: 34966595 PMC: 8667742. DOI: 10.7717/peerj.12602.

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