Photochemical, Anatomical, and Growth Changes in Cassava Cultivars after Application of Post-Emergent Herbicides

Jania Claudia Camilo dos Santos, Renato Nunes Costa, Dayane Mércia Ribeiro Silva, Dougllas Ferreira da Rocha, Lennon Klédson dos Santos Silva, Rudieli Machado da Silva, Marcelo de Almeida Silva, Jessé Marques da Silva Júnior Pavão and José Vieira Silva
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Jania Claudia Camilo dos Santos: Department of Crop Production, School of Agricultural Sciences, São Paulo State University (UNESP), Av. Universitária, 3780, Botucatu 18610-034, SP, Brazil
Renato Nunes Costa: Department of Crop Production, School of Agricultural Sciences, São Paulo State University (UNESP), Av. Universitária, 3780, Botucatu 18610-034, SP, Brazil
Dayane Mércia Ribeiro Silva: Department of Crop Production, School of Agricultural Sciences, São Paulo State University (UNESP), Av. Universitária, 3780, Botucatu 18610-034, SP, Brazil
Dougllas Ferreira da Rocha: Plant Physiology Laboratory, Postgraduate Program in Agriculture and Environment, Federal University of Alagoas (UFAL), Av. Manoel Severino Barbosa, s/n, Bom Sucesso 57309-005, AL, Brazil
Lennon Klédson dos Santos Silva: Plant Physiology Laboratory, Postgraduate Program in Agriculture and Environment, Federal University of Alagoas (UFAL), Av. Manoel Severino Barbosa, s/n, Bom Sucesso 57309-005, AL, Brazil
Rudieli Machado da Silva: Department of Crop Production, School of Agricultural Sciences, São Paulo State University (UNESP), Av. Universitária, 3780, Botucatu 18610-034, SP, Brazil
Marcelo de Almeida Silva: Department of Crop Production, School of Agricultural Sciences, São Paulo State University (UNESP), Av. Universitária, 3780, Botucatu 18610-034, SP, Brazil
Jessé Marques da Silva Júnior Pavão: Plant Physiology Laboratory, Postgraduate Program in Agriculture and Environment, Federal University of Alagoas (UFAL), Av. Manoel Severino Barbosa, s/n, Bom Sucesso 57309-005, AL, Brazil
José Vieira Silva: Plant Physiology Laboratory, Postgraduate Program in Agriculture and Environment, Federal University of Alagoas (UFAL), Av. Manoel Severino Barbosa, s/n, Bom Sucesso 57309-005, AL, Brazil

Agriculture, 2022, vol. 12, issue 7, 1-16

Abstract: Plants develop a series of adaptive mechanisms capable of tolerating the action of herbicides; however, little is known about the physiological mechanisms developed by cassava. The purpose of this research was to evaluate the influence of post-emergence herbicides on the physiological and anatomical characteristics of two cassava cultivars subjected to six herbicide treatments. The evaluations occurred at 0, 24, 48, 72, and 168 h after herbicide application. Herbicide application induced changes in the physiological and anatomical leaf profile. These changes were observed through the thickening of the leaf blade midrib caused by the herbicides fomesafen and fenoxaprop-p-ethyl in the Campinas cultivar. On the other hand, the leaves of the Sergipana cultivar showed a reduction in the thickness of the midrib tissues. Minor effects on cassava plants were observed with the herbicide fluazifop-p-butyl.

Keywords: Manihot esculenta Crantz; chemical molecules; gas exchange; leaf anatomy; physiological adaptation (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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