Silicon accumulation and its effect on agricultural traits and anthracnose incidence in lignocellulosic sorghum

Authors

  • Diego Tolentino de Lima Federal University of Uberlândia image/svg+xml
  • Marcus Vinicius Sampaio Federal University of Uberlândia image/svg+xml
  • Carlos Juliano Brant Albuquerque Universidade Federal de Minas Gerais - Campus Montes Claros
  • Hamilton Seron Pereira Federal University of Uberlândia image/svg+xml
  • Weslei Geraldo Martins Centro Universitário do Triângulo image/svg+xml

Abstract

Silicon (Si) accumulation in plants may reduce yield losses by inducing resistance to both abiotic and biotic stresses. This study aimed to evaluate the Si accumulation by lignocellulosic sorghum (Sorghum bicolor) in a greenhouse experiment, as well as the effect of its application on agricultural traits and on the induction of resistance against anthracnose (Colletotrichum sublineolum) in a field experiment. Sixteen sorghum genotypes were evaluated in a greenhouse for their response to silicate fertilization, receiving either 0 kg ha-1 or 261 kg ha-1 of Si, measuring the Si concentration in the sorghum shoots. Four genotypes that were responsive to Si fertilization were tested in the field, receiving either 0 kg ha-1 or 400 kg ha-1 of Si, being evaluated the Si concentration on the leaves, plant height, lodging percentage, anthracnose disease severity, grain yield and plant fresh and dry matter. The response of sorghum to Si fertilization in the greenhouse varied with the genotype and, of the 16 genotypes evaluated, 12 were responsive, accumulating more Si after the fertilization with this element. All four genotypes tested in the field were responsive, but no effect of Si was observed on grain yield or on sorghum fresh and dry matter production. However, the soil Si application reduced the plant lodging and anthracnose severity ratings in sorghum.

KEYWORDS: Colletotrichum sublineolum, Sorghum bicolor L. Moench., silicate fertilization.

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Author Biography

  • Diego Tolentino de Lima, Federal University of Uberlândia

    Instituto de Ciências Agrárias (UFV - CRP)

    Melhhoramento Genético do maracujazeiro

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Published

2019-03-18

Issue

Vol. 49 (2019)

Section

Research Article

License

Authors will not be paid for published articles and must waive their copyright in favor of the PAT journal. On the other hand, they are solely responsible for the content of those articles, even if the Editor holds the right to adjust them to the norms of the journal. Authors are allowed to publish their articles simultaneously in their institutional repositories, as soon as the original publication at the PAT journal is mentioned.

How to Cite

LIMA, D. T. DE et al. Silicon accumulation and its effect on agricultural traits and anthracnose incidence in lignocellulosic sorghum. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], v. 49, p. e54201, 18 Mar.2019.