Name: DÉBORAH HOFFMAM CRAUSE
Publication date: 17/05/2022
Advisor:
Name |
Role |
|---|---|
| EDNEY LEANDRO DA VITÓRIA | Advisor * |
Examining board:
| Name |
Role |
|---|---|
| ADRIANO ALVES FERNANDES | Internal Examiner * |
| EDNEY LEANDRO DA VITÓRIA | Advisor * |
Summary: Espírito Santo is the highlight among the Brazilian states that produce conilon coffee
(Coffea canephora), with about 80% of the national production, and this production is
concentrated in the North region, with emphasis on the agricultural production of the
region, being one of the main sources of income and employment. The spraying of
pesticides and agricultural fertilizers by means of unmanned aerial vehicles is an important technology to provide efficient and effective applications of these products. As
it is a technology with very high and diversified potential, the use of these vehicles in
agriculture has increased considerably. The objective of the first chapter, the bibliometric review, was chosen because it is a planned method, which makes it possible to
collect, select and critically analyze studies. The sources of a bibliometrics study are,
therefore, articles from original studies available in a database. A search was carried
out in the Scopus database with the terms Unmanned Aerial Vehicle, Unmanned Aircraft System, Remotely Piloted Aircraft and Drone. In order to restrict the search to
terms related to agriculture, the terms Agriculture, Agricultural Engineering, Crops,
Farm and Tillage were used; and finally the terms Pesticides and Fertlizers, restricting
them to publications related to studies with pesticides and agricultural fertilizers. Only
records in English from the period 2012 and 2022 were selected and the VOSviewer
software was used for the scientometric analyses. The bibliometric analysis presents
results that indicate the need for investments in research on the use of UAVs in the
application of pesticides and agricultural fertilizers in developing countries, Brazil
stands out, for having the agricultural sector responsible for approximately 33% of the
product gross domestic product and to be one of the largest agricultural producers in
the world. The objective of the second chapter was to define the best combinations of
rotation of the centrifugal system of application of the unmanned aerial vehicle and the
flight height for application, in order to obtain an efficiency in the quality of agricultural
foliar fertilizer droplets deposited on conilon coffee leaves. The experiment was carried
out on a rural property located in the municipality of Vila Pavão, northwest region of
the State of Espírito Santo. To verify the homogeneity and normality of the residues,
the test of and Shapiro Wilk, respectively, was applied. Data transformation was performed when necessary, followed by analysis of variance, applying Tukey`s test. All
tests were performed using the Rbio software, considering a 5% significance level. At
a height of 2.0 meters in a rotation of 10,000 rpm, it obtained satisfactory values of
coverage and droplet deposition on the target.
