The varying promotion effects of fulvic acid with different molecular weights on the enhancement of grain yield and quality of winter wheat

Yuanyuan Liang, Zeping Wang, Qiuzhe Shi, Fang Li, Zunkang Zhao, Yanlai Han and Yi Wang
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Yuanyuan Liang: College of Resources and Environment, Henan Agricultural University, Zhengzhou, P.R. China
Zeping Wang: College of Resources and Environment, Henan Agricultural University, Zhengzhou, P.R. China
Qiuzhe Shi: College of Resources and Environment, Henan Agricultural University, Zhengzhou, P.R. China
Fang Li: College of Resources and Environment, Henan Agricultural University, Zhengzhou, P.R. China
Zunkang Zhao: Key Innovation Center for the Integration of Industry and Education on Comprehensive Utilization of Agricultural Wastes and Prevention and Control of Agricultural Non-point Pollution of Jiangxi Province, Jiangxi Agricultural University, Nanchang, P.R. China
Yanlai Han: College of Resources and Environment, Henan Agricultural University, Zhengzhou, P.R. China
Yi Wang: College of Resources and Environment, Henan Agricultural University, Zhengzhou, P.R. China

Plant, Soil and Environment, 2023, vol. 69, issue 4, 141-151

Abstract: This study aims to verify the application effect of Fluvic acid (FA) with different molecular weights (MW) on the growth and quality of winter wheat. FA extracted from lignite was divided into 3 MWs (W1≤3000 D, 3000 D10000 D) by dialysis, and its structure was analyzed. Three application rates were set for each MW FA in the pot experiment, which were 10, 25 and 50 mg/kg in soil, respectively, and water was the control. There were significant interactive effects of MW and application rates of FAs. Compared with the control, all the FA treatments significantly increased grain yields, nitrogen uptake efficiencies, grain iron concentration, and soil available nitrogen concentration. Heatmap analysis revealed that the W1C2 (10 mg/kg W1) treatment had the most significant impacts for all analyzed indexes, whereas W3C3 (50 mg/kg W3) showed the weakest impacts. The results showed that at a low application rate (10 mg/kg in soil), the promotion effects of the three MW FAs were similar. W1 showed the most significant promotion effects, which was attributed to the combined effects of its lower MW and functional group characteristics.

Keywords: biostimulant; functional groups; iron concentration; soil nutrient concentration; nitrogen translocation (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:69:y:2023:i:4:id:391-2022-pse

DOI: 10.17221/391/2022-PSE

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