Abstract

Spring camelina is a promising oilseed crop for the dry steppe zone of Northern Kazakhstan. However, the expansion of its sowing areas is constrained by the lack of scientific research, especially on the phytosanitary state. The article presents the results of the study of fungi of the Alternaria and Fusarium genus isolated from the affected organs of spring camelina plants and provides measures to control them in the field conditions of the region. The research aimed to identify common diseases and determine their development and distribution under different backgrounds when treated with fungicides. To identify fungal strains, the method of determination of the direct nucleotide sequence of the intergenic transcribed region was used, followed by the determination of nucleotide identity with the sequences deposited in the Gene Bank international database, as well as the construction of phylogenetic trees with nucleotide sequences. As a result of the analysis, phytopathogenic strains belonging to Alternaria alternata, Alternaria tenuissima and Fusarium acuminatum were identified. During field studies, the development and spread of diseases under different background conditions of fungicide treatment versus control were analyzed. Of the products used, the Pictor fungicide (active ingredients: Boscalid 200 g/l + dimoxystrobin 200 g/l) showed high efficiency, compared with the Extrasolbiofungicide (Bacillus subtilis, strain H-13). The results of the study can serve as a basis for the development of chemical and biological control methods aimed at specific pathogens.

Highlights

  • Spring camelina (Camelina sativa (L.) Grantz) is an annual, small-seeded oilseed crop of the cruciferous family (Brassicaceae), originating from Asia Minor

  • The agronomic value of spring camelina is explained by the fact that the culture is undemanding to temperatures, tolerates frosts up to 8-10°C during the germination period, at the same time, during the growing season it tolerates a lack of moisture and high temperatures, which allows it to be cultivated in a wide range of soils and climatic conditions (Gamayunova and Moskva, 2016; Tulkubaeva and Vasin, 2017; Ahmed et al, 2017; Sagirova and Vlasova, 2020)

  • The purpose of our research was to identify the causative agents of fungal diseases Alternaria and Fusarium and determine their development and distribution under different backgrounds when treated with fungicides

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Summary

Introduction

Spring camelina (Camelina sativa (L.) Grantz) is an annual, small-seeded oilseed crop of the cruciferous family (Brassicaceae), originating from Asia Minor. Camelina oil can be used in the food industry and as a dietary oil. Camelina seed oil in foreign countries is used, first of all, as a source of biodiesel (Prakhova et al, 2018; Kurasiak-Popowska et al, 2018; Moser, 2010; Gesch, 2014). The agronomic value of spring camelina is explained by the fact that the culture is undemanding to temperatures, tolerates frosts up to 8-10°C during the germination period, at the same time, during the growing season it tolerates a lack of moisture and high temperatures, which allows it to be cultivated in a wide range of soils and climatic conditions (Gamayunova and Moskva, 2016; Tulkubaeva and Vasin, 2017; Ahmed et al, 2017; Sagirova and Vlasova, 2020)

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