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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Tecnologia de aplicação de herbicidas no controle de plantas daninhas / Herbicide application technology on weed control

Campos, Henrique Borges Neves [UNESP] 19 April 2017 (has links)
Submitted by Henrique Borges Neves Campos (hcampos_ea@hotmail.com) on 2018-08-19T09:48:51Z No. of bitstreams: 1 TESE HBN CAMPOS 2018.pdf: 5571147 bytes, checksum: 1c555ec338396b960800948162d4d9b8 (MD5) / Approved for entry into archive by Neli Silvia Pereira null (nelisps@fcav.unesp.br) on 2018-08-20T17:37:29Z (GMT) No. of bitstreams: 1 campos_hbn_dr_jabo.pdf: 5571147 bytes, checksum: 1c555ec338396b960800948162d4d9b8 (MD5) / Made available in DSpace on 2018-08-20T17:37:29Z (GMT). No. of bitstreams: 1 campos_hbn_dr_jabo.pdf: 5571147 bytes, checksum: 1c555ec338396b960800948162d4d9b8 (MD5) Previous issue date: 2017-04-19 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Esta Tese nasceu de duas grandes oportunidades, avaliar o espectro de gotas pelo método de difração laser em túnel de vento de alta velocidade na Universidade de Nebraska-Lincoln (EUA) e contribuir com o desenvolvimento comercial do produto Herbiciclo Duo® da fabricante de pulverizadores Herbicat. As hipóteses que: (1) os adjuvantes agrícolas a base de polímero em mistura com herbicidas podem mitigar a deriva de gotas em aplicações aéreas e (2) o sistema de aplicação localizada WeedSeeker® é eficaz, preciso e economicamente viável foram usadas como base deste estudo. Foram avaliados cinco adjuvantes polímeros em mistura em tanque com os herbicidas 2,4-D e picloram quanto à deriva sob condições de pulverização aérea. Já, o sistema de aplicação localizada WeedSeeker® foi avaliado embarcado em quadriciclos para controle de plantas daninhas na entrelinha da cana-de-açúcar em função do tamanho de plantas, velocidade de aplicação, condições de irradiância e doses do herbicida glyphosate. Espera-se com este estudo apresentar estratégias para difundir práticas mais sustentáveis de intervenção fitossanitária em curto, médio e longo prazo. / This thesis was created from two great opportunities, to evaluate the droplet spectra by using high speed wind tunnel laser diffraction method at the University of Nebraska-Lincoln (USA) and to contribute to the commercial development of the Herbiciclo Duo® product, produced by Herbicat sprayer manufacturer. The hypothesis that: (1) polymer adjuvants tank mixture with herbicides can mitigate spray drift under aerial applications and (2) the WeedSeeker® spot spray system is effective, accurate, and economically feasible were used as the basis for this study. The effect of five polymer adjuvants tank mixture with 2,4-D and picloram herbicides were evaluated due spray drift under aerial application conditions. The WeedSeeker® spot spray system was evaluated on quadicycle for weed control on sugarcane interrow due to plant size, speed track, irradiance conditions and glyphosate herbicide doses. It is hoped that this study presents strategies to disseminate more sustainable practices of phytosanitary intervention in the short, medium and long term.

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