Response of Potato ( Solanum Tuberosum L.) Plants to Spraying by Hydrogen Peroxide

Ewa Szpunar-Krok, Marta Jańczak-Pieniążek, Karol Skrobacz, Dorota Bobrecka-Jamro and Maciej Balawejder
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Ewa Szpunar-Krok: Department of Crop Production, University of Rzeszow, 35-601 Rzeszów, Poland
Marta Jańczak-Pieniążek: Department of Crop Production, University of Rzeszow, 35-601 Rzeszów, Poland
Karol Skrobacz: Department of Food Chemistry and Toxicology, University of Rzeszow, 35-601 Rzeszów, Poland
Dorota Bobrecka-Jamro: Department of Crop Production, University of Rzeszow, 35-601 Rzeszów, Poland
Maciej Balawejder: Department of Food Chemistry and Toxicology, University of Rzeszow, 35-601 Rzeszów, Poland

Sustainability, 2020, vol. 12, issue 6, 1-15

Abstract: The biocidal properties of hydrogen peroxide (H 2 O 2 ) could be used in plant protection. However, the effects of H 2 O 2 foliar spraying on the performance of the potato photosynthetic apparatus are still unclear. A pot experiment was conducted to investigate the effect of foliar spraying, which was done twice, with various H 2 O 2 concentrations (1, 3, 6, 12, and 18%) on the potato photosynthetic apparatus efficiency and antioxidant capacity. The measurements were taken four times: on the first and seventh day after each application. Foliar spraying with 1% H 2 O 2 concentration was the most stimulating for the course of physiological processes in leaves. Further increased doses of H 2 O 2 enhanced stress in plants which is manifested by a decrease in pigment levels, photosynthetic attributes, antioxidant capacity in leaves, and fresh mass above-ground parts of potato plants. The intensive effect of spraying was particularly observed on the first day after application, while later, the activity of the photosynthetic apparatus and antioxidant capacity increased. The study provides information that foliar spraying with 1% H 2 O 2 can be taken into account in further research on the development of a potato plant protection methods.

Keywords: potato; foliar application; gas exchange; chlorophyll content; chlorophyll fluorescence; antioxidant capacity (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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