Effect of potassium fertilization on roselle yield and yield components as well as IWUE under deficit irrigation regimes

Rashki, Paria; Halimeh, Piri; Khamari, Eisa

doi:10.1016/j.sajb.2022.03.048

Cited by 6 publications

(2 citation statements)

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“…This further improves root dry matter accumulation [47] for drought tolerance or stress avoidance. In addition, potassium uptake is a key mechanism for plant stress response, so suitable concentrations of potash fertilizers under drought conditions are beneficial to the plant to produce positive effects [39,46,48,49]. In this study, potassium application at different moisture levels significantly improved the yield traits in the roots of S. miltiorrhiza, which was favorable for the increase in S. miltiorrhiza.…”

Section: Discussionmentioning

confidence: 65%

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Effects of Potassium Application on Growth and Root Metabolism of Salvia miltiorrhiza under Drought Stress

Li,

Mei,

Zhang

et al. 2023

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Potassium application can effectively mitigate the effects of drought stress on plant growth, and few studies have reported its application to the medicinal plant Salvia miltiorrhiza (S. miltiorrhiza). Four experimental treatments were used, including a control (Z1K0), non-drought potassium application (Z1K3), drought treatments (Z2K0), and drought-stress potassium application (Z2K3). The findings revealed that, in contrast to Z2K0, Z2K3 promoted the absorption of potassium in S. miltiorrhiza, elicited the aggregation of osmoregulatory compounds such as soluble protein and proline, and mitigated membrane impairment as a defense against the deleterious consequences of drought stress. Additionally, we extended our investigation to encompass comprehensive metabolomics analysis of the roots. Interestingly, subsequent root metabolomics analyses demonstrated that the drought application of potassium not only significantly reduced the amino acid content, but also increased the amount of terpenoids and phenolic acids in the roots. Nonetheless, the application of a particular amount of K under moderate drought conditions promoted the growth and yield of S. miltiorrhiza, but proved to be detrimental to its active ingredients. Indeed, the findings of this study offer valuable insights and recommendations for the application of potassium to mitigate the impact of drought stress in S. miltiorrhiza and other medicinal plants.

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Section: Discussionmentioning

confidence: 65%

“…From the previous discussion, it should be clear that the moderate application of potash fertilizer is beneficial for crop substance yield [36][37][38][39]. Supplemental potassium fertilization is often required to achieve or maintain maximum crop yield, especially when the effective potassium content of the soil is low.…”

Section: Discussionmentioning

confidence: 99%