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,
José Vieira Silva
Affiliations
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
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.
