Variable dose rate application of herbicides using optical sensors

U.R. Antuniassi; M.S. Nery; C.A.S. Queiroz

Variable dose rate application of herbicides using optical sensors

In: Precision Agriculture â05

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U.R. Antuniassi

U.R. Antuniassi ¹Sao Paulo State University, PO Box 237, 18603-970, Botucatu/SP, Brazil

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M.S. Nery

M.S. Nery ²Bahia Southeast State University, VitÃ³ria da Conquista/BA, Brazil

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C.A.S. Queiroz

C.A.S. Queiroz ³Sao Paulo State University, Botucatu/SP, Brazil

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Type:: Chapter

Pages:: 683â689

DOI:: https://doi.org/10.3920/978-90-8686-549-9_084

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The aim of this study was to develop and evaluate a variable dose rate application of herbicides using an online electronic control based system with optical sensors for weed detection in forested areas. The proposed concept was to apply a basic dose on 100% of the area (aiming to control small weeds) and to apply a complementary patch-spraying dose only on areas with higher weed infestation. For that purpose, a conventional spray boom was adjusted to apply 40% of the herbicide dose on the full area and the optical sensors were used to control the application of the complementary dose (60%) only on areas with higher infestation. The results showed that the system performed adequately. Field applications presented herbicide savings around 20 to 30%, with a similar weed control performance as compared to the full dose application on 100% of the area.

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Precision Agriculture â05

E-Book ISBN:: 9789086865499

Publisher:: Wageningen Academic

Print Publication Date:: 24 Oct 2005

Subjects
- Life Sciences
  - General
  - Agriculture & Environment

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Variable dose rate application of herbicides using optical sensors

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