Open AccessInfluence of silicon on wheat tan spot severity in the State of Goiás
Author(s) -
Eder Marques,
AUTHOR_ID,
Marcelo S. Marinho,
Eder Marques,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2021
Publication title -
revista agrária acadêmica
Language(s) - English
Resource type - Journals
ISSN - 2595-3125
DOI - 10.32406/v4n6/2021/64-73/agrariacad
Subject(s) - pyrenophora , fungicide , cultivar , agronomy , silicon , leaf spot , winter wheat , micronutrient , spots , biology , horticulture , materials science , chemistry , botany , metallurgy , organic chemistry
Wheat (Triticum aestivum L.) is one of the most important crops in the world. In the Central-West region of Brazil, there wheat cultivation has increased greatly; however, diseases such as tan spot (Pyrenophora tritici-repentis) are a concern. Silicon is known to act on the plant's defense process; therefore, the objective of this work was to evaluate the efficiency of silicon associated with fungicides in reducing the severity of wheat tan spot in the State of Goiás. The experiment was carried out in the field, with two wheat cultivars and two plots, where one received four applications of silicon + fungicides and the other only fungicide. The severity was evaluated through a scale of points that varied between 1 (small spots) and 5 (large necrotic and chlorotic areas coalescing) and the hectoliter weight was calculated. Based on the experiment, it was observed that the silicon associated with fungicides reduced the severity of the tan spot in both cultivars and also resulted in higher grain quality. It was concluded that the application of silicon reduces the severity of tan spot in wheat, indicating the effect of the micronutrient as an inducer of resistance in plants under the conditions of the Goiás Cerrado.