Employees of the Ural Branch of the Russian Academy of Sciences have learned to improve the quality of planting by irradiating grain crops with lasers in three different spectra. Seeds irradiated by the proposed method were characterized by increased germination energy: the difference compared to non-irradiated seeds was 22%. Increased germination energy results in the formation of “friendly” and competitive seedlings that are more resistant to lodging; Additionally, phytopathogenic infections are reduced by 21%. The Russian Ministry of Education and Science told socialbites.ca about this.
The effect of laser irradiation on grain seeds has been studied since the seventies of the last century. The phenomenon of laser stimulation (photoactivation) has been described in the literature, but is still not well explained theoretically.
“The aim of our research was to determine the optimal properties of combined laser irradiation that improve the quality of planting grain seeds. Based on the analysis of the results of published scientific studies in each of the three wavelength ranges listed above, we selected the most promising areas for photoactivation: 360-365 nm (near ultraviolet), 637 nm (visible red) and 850 nm (infrared). Each wavelength has its own effect on biological objects. The factors examined in our study were exposure time, total radiation dose, order of effects of irradiation at different wavelengths,” the Russian Academy of Sciences told socialbites.ca. He told .
The method consists of sequentially exposing grain seeds to lasers with three wavelengths of radiation without rest before planting; This makes it possible to combine laser treatment with chemical seed treatment simultaneously and reduce the dosage of chemicals.
This laser processing method was tested on cereal seeds: soft spring wheat (Triticum aestivum L.) variety “Kamenka”, spring barley (Hordeum vulgare L.) variety “Spring of Prikamya” and winter rye (Secale gravee L.) variety “Countess”. ” ” “ Tests on legumes are also planned in the future.
This laser processing method can be used in the production of grain crops in agricultural enterprises. It is necessary to develop a technical solution that will allow the proposed irradiation method to be applied to large volumes of grain.
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Source: Gazeta
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