Home

Organizing Committee

Presentations

Poster Presentations




Poster Presentations


24

Asian soybean rust control with aerial application of granule flutriafol

Presenter: U. R. Antuniassi

All authors and affiliations: U. R. ANTUNIASSI (1), J. F. Salvador (1), M. A. Oliveira (1), R. B. Oliveira (1), A. C. Silva (1), F. V. Siqueri (2), M. L. Santen (3). (1) FCA/UNESP, Botucatu, SP, Brazil; (2) Fundação MT, Rondonópolis, MT, Brazil; (3) Cheminova, São Paulo, SP, Brazil

Aerial application of granule fungicides for Asian soybean rust (ASR) on the vegetative stages may provide high operational performance with reduced risk of drift, resulting in larger and flexible time intervals for application. Also, possible fungicide residual effects may reduce the number of applications needed in the season. The aim this study was to evaluate the aerial application of granule flutriafol (Impact 1,5 GR) for ASR control with and without complementary liquid ground applications. The granules were applied with 10, 15, and 20 kg/ha at the V9 stage. The experiment was set up with two different areas for each granule dose rate. Inside each area, there was a randomized block experiment with four replications and five treatments, as follows: 1) control plot without any fungicide, 2) no granules and ground liquid applications after the first symptoms at R5.1, 3) only granule application, 4) granule application and complementary applications from R2, and 5) granule application and complementary applications after the first symptoms at R5.1. The results showed that treatments with complementary applications gave better performance compared with a single granule application at stage V9. Among the treatments with complementary applications, the best results were found with the granule application followed by complementary applications after the first symptoms. There was a tendency for better results with higher granule dose rates.

                                        Back to Poster Presentations