Abstract
The salinity effects on lawn grasses caused by mine salts (halite and carnallitite) due to road de-icing processes was the aim of this study. Biometric and physiological parameters were evaluated after salt dosage of 50 and 100 g m−2 applied to a lawn surface twice and four times, in weekly intervals. The alleviating effect to the salinity on the grasses from potassium enriched soil was also evaluated. Protective effect of potassium included mostly plasma membrane integrity and an increase in the level of photosynthetic pigments. This probably resulted in more efficient photosynthesis and thus increased lawn growth. Simultaneously, only a slight reduction in relative water content (RWC) was noted, so the recorded increase in proline level may indicate its participation in osmotic adjustment. Our results confirm the importance of proper, and even over-optimal, potassium fertilization of lawn grasses exposed to salinity. Moreover, it is advisable to use other fossil salts instead of halite for the de-icing of near-green areas. The mined salt carnallitite which, besides NaCl, contains about 30% of carnalite (KCl·MgCl2·6H2O) could be such a substance.
Highlights
Significant effect of salt type and dose on relative water content (RWC) was revealed after 7 days of salt application
Salinity has a harmful effect on water relation, photosynthesis= and other physiological processes [24,41]
Our research has shown that the content of this amino acid in lawn grasses, growing with higher potassium level and treated with lower halite dosage, was the same as in those treated with higher halite dose
Summary
Negative effects of salinity on the state of a lawn depend on the cultivars of turfgrass species in grasses mixture, as well as on the type and dose of salt used for de-icing. High salinity led to potassium deficiency, an increased potassium dosage resulted in the reduction of adverse effects of stress on physiological activity and plant growth [1,16]. This element regulates plant water management and stomatal behavior, responsible for the maintenance of photosynthetic CO2 fixation, as well as protects chloroplasts from oxidative damages [17,18].
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
