ORIGINAL ARTICLE
Coverage of corn plants using different hydraulic nozzles and application volume rates
1
Fitotecnia, Universidade Federal de Viçosa, Viçosa, Brazil
2
Fitopatologia, Universidade Federal de Viçosa, Viçosa, Brazil
3
Agronomia, Universidade Federal de Viçosa, Viçosa, Brazil
4
Agronomia, Universidade Estadual da Região Tocantina do Maranhão, Imperatriz, Brazil
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2021-12-15
Acceptance date: 2022-03-22
Online publication date: 2022-06-10
Corresponding author
Journal of Plant Protection Research 2022;62(2):198-206
HIGHLIGHTS
- There was a decline in leaf cover in the lower thirds of corn plants.
- There was a decline in droplet density deposited in the lower thirds of corn plants.
- There was no greater coverage on the leaf surface with the spraying of fine drops.
- All tips provided the recommended number of drops for systemic fungicide application.
KEYWORDS
TOPICS
ABSTRACT
An efficient application of phytosanitary products depends, among other factors, on
a good selection of nozzles and the application volume rate of the solution used. Thus, the
objective of this work was to evaluate the efficiency of different models of hydraulic tips
and application volume rates on spray coverage on targets positioned in the upper, middle
and lower thirds of corn plants. The application volume rates evaluated were: 50 l · ha−1;
100 l · ha−1; 150 l · ha−1; 200 l · ha−1; 300 l · ha−1
and 400 l · ha−1. The following nozzles were
used: TT 11001, TTJ60 11002, TXA 8003, 30HCX 12, GRD120 02 and GAT11002. Applications
were carried out in phenological stages V6–V7 of corn plants. There was a directly
proportional relationship between an increase in application volume rate and the levels of
spray coverage and droplet density in the three thirds of corn plants. The application volume
rate evaluated, except for 50 l · ha−1 in the lower third, provided a number of droplets
compatible with the literature recommendations for the application of systemic fungicides.
All tips evaluated provided a number of droplets compatible with the recommendations
in the literature for the application of systemic fungicides, therefore, they can be recommended
for use in spraying on corn crops.
RESPONSIBLE EDITOR
Zbigniew Czaczyk
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
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| eISSN: | 1899-007X |
| ISSN: | 1427-4345 |
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