Hexaploid Salix rehderiana is more suitable for remediating lead contamination than diploids, especially male plants

Yang, Congcong; Xia, Linchao; Zeng, Yi; Chen, Yao; Zhang, Sheng

doi:10.1016/j.chemosphere.2023.138902

Cited by 1 publication

(1 citation statement)

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“…Soil pH was measured in triplicate at a 1: 5 soil to deionized water (w/v) using digital PHS-3E/pH meter (Leici Instrument Branch of Shanghai Yidian Scientific Instrument Co., Ltd., Shanghai, China); NH 4 + -N and NO 3 − -N concentrations were assessed with a continuous flow analyzer (Vario EL III, Elementar, Germany) after 2 mol L −1 KCl solution leaching (Ding et al, 2023). Soil phosphatase activities (S-ACP and S-ALP) were measured using commercially available kits (Beijing Solarbio Technology Co., Ltd.), with the activity determined by the phenol produced at 660 nm after hydrolyzing benzene disodium phosphate (Ding et al, 2023;Yang et al, 2023).…”

Section: Soil Chemical and Biological Propertiesmentioning

confidence: 99%

Influences of nitrogen input forms and levels on phosphorus availability in karst grassland soils

Zhou,

Yang,

Zhao

et al. 2024

Front. Sustain. Food Syst.

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The availability of soil phosphorus (P), a crucial nutrient influencing plant productivity and ecosystem function, is impacted by continuously increasing nitrogen (N) enrichment, which changes the soil P cycle. The effect of varying forms of N input on soil P dynamics in P-limited karst grassland ecosystems remains unclear. To address this knowledge gap, we conducted a greenhouse experiment to explore the effects of various forms of N addition [Ca(NO3)2, NH4Cl, NH4NO3, Urea] on soil P fractions in these ecosystems, applying two levels (N1: 50 mg N kg−1soil, N2: 100 mg N kg−1soil) of N input in two soils (yellow soil, limestone soil). Results indicated that P fractions in both soil types were significantly affected by N additions, with yellow soil demonstrating a higher sensitivity to these additions, and this effect was strongly modulated by the form and level of N added. High N addition, rather than low N, significantly affect the P fractions in both soil types. Specially, except for Ca(NO3)2, high N addition significantly increased the available P in both soils, following the order: Urea and NH4NO3 > NH4Cl > Ca(NO3)2, and decreased NaHCO3-Pi in both soils. High N addition also significantly reduced NaOH-Po and C.HCl-Po fractions in yellow soil. Additionally, the response of root biomass and alkaline phosphatase activity in both soils to N input paralleled the trends observed in the available P fractions. Notably, changes in soil available P were strongly correlated with plant root biomass and soil alkaline phosphatase activity. Our study highlights that the N addition form significantly influences soil P availability, which is closely tied to plant root biomass and alkaline phosphatase activity. This finding underscores the importance of considering N input form to boost soil fertility and promote sustainable agriculture.

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Section: Soil Chemical and Biological Propertiesmentioning

confidence: 99%