Efeitos das alternativas de herbicidas aplicados em nível comercial na cultura da mandioca no balanço de massa final das raízes

• Autor(a) principal: Abreu, Magno Luiz [UNESP]
• Data de Publicação: 2010
• Outros Autores: Bicudo, Silvio José [UNESP], Curcelli, Felipe [UNESP], Aguiar, Eduardo Barreto [UNESP], Brachtvogel, Elizeu Luiz [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://revistas.fca.unesp.br/index.php/rat/article/view/1106; http://hdl.handle.net/11449/141164
• topic: Manihot esculenta; Phytotoxicity; Mass balance; Manihot esculenta; Fitotoxicidade; Balanço de massa

This essay aimed to evaluate of the effects of alternative herbicides applied on a commercial level in cassava crop in the mass end of the roots The experiments were conducted in Botucatu / SP, Brazil, in a clay soil and São Manuel / SP, Brazil, in sandy soil, in 2008 croprowing season. The treatments was combinated in a 11 X 2 factorial (11 herbicides and 2 varieties) and disposed in a randomized block design. The treatments the herbicides tested was ametryne (1000g ha-1 ), clomazone (500 g ha-1 ), ametryne + clomazone (750 + 500 g ha-1 ) and atrazine (500 g ha-1 ) applied in pre-emergence of cassava,haloxyfof-methyl (48 g ha-1 ), sethoxydim (200 g ha-1 ), fluazifop-p-butyl (100 g ha-1 ), quizalofop-p-ethyl (75 g ha-1 ), fomezafen (225 g ha-1 ) and bentazon (720 g ha-1 ), applied post-emergence of culture as well as an control untreated end two varieties IAC14 and IAC576-70. For the implementation it was used a backpack sprayer, pressurized CO2 and equipped with bar application with five Teejet XR 110 02vs spaced at 0.50 m, with consumption volume of 200 L ha-1 of water. The material was processed in the laboratory for extraction of starch from CERAT (Centre for Tropical Root Starches UNESP / Botucatu). The starch content was found are the same industries that can extract. The starch content was unaffected in both varieties and environments studied.