Efficacy of plant resistance inducers on cereal crops against a complex of pathogens

Irina Matveeva,Anastasia Danilova,Olesya Miroshnichenko,Alexander Grigoriev,Yuriy Kim

doi:10.1051/bioconf/20202100029

Irina Matveeva, Anastasia Danilova + Show 3 more

Open Access

https://doi.org/10.1051/bioconf/20202100029

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Abstract

The article describes the benefits of using plant resistance inducers on cereal crops and the basic principles of their impact on pests development (Pyrenophora tritici-repentis, Puccinia triticina, Puccinia striiformis, Puccinia graminis, Puccinia hordei). The assessment results of the biological and economic effectiveness of L-479 and DL-59 preparations are presented in comparison with the chemical Kolosal,CE and biological Albit, which were used as standards for reducing the development of yellow leaf spot and rust diseases. L-479 product was found to be the most effective on wheat against brown, yellow and stem rust, and yellow leaf spot. Its biological efficacy ranged from 48.3 % to 57.0 % depending on the pathogen, and the increase in grain yield ranged from 3.7 % to 22.1 %. DL-59 product showed the best biological efficacy against dwarf leaf rust of barley – 89.8 %, the increase in grain yield was 3.5 %.

Highlights

Cereal crops are the most widespread around the world and are of great food value
Assessment of economic efficiency showed that the preparation DL-59 provided an increase in grain yield with double treatment against brown rust of 26.2 g/m2 (3.8 %); against yellow rust - 55.4 g/m2 (7.0 %), against stem rust - 44.5 g/m2 (5.7 %), against yellow leaf spot - 96.0 g/m2 (12.5 %), against dwarf rust - 24.0 g/m2 (3.5 %) (Figure 2)
The research revealed that L-479 preparation was the most effective on wheat against rust diseases and yellow leaf spot

Summary

Introduction

Cereal crops are the most widespread around the world and are of great food value. Among the factors significantly reducing their yield, the influence of phytopathogens causing various diseases is of great importance. The rust diseases pathogens (brown, yellow, stem, dwarf rust) are the most dangerous and economically significant for cereal crops, seriously threatening the food security of the region and the country as a whole [2]. Wheat yellow (striped) rust (pathogen - Puccinia striiformis West.) is a dangerous, widespread disease over all continents (except Antarctica) in regions with high humidity and low temperatures. Dwarf rust (pathogen - Puccinia hordei Otth.) is a dangerous barley disease, which is highly specialized and belongs to a strictly defined crop. During the periods with optimal weather conditions, the development of dwarf rust in susceptible varieties can reach 60-80 %, which, in turn, leads to a significant decrease in the quality and grain yield (up to 30 %) [2]

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