SPRAYING QUALITY OF CROP PROTECTION PRODUCTS USING TWO DROPLET SPECTRA IN THREE PERIODS OF THE DAY
AUTOR(ES)
Graziano, Carlos E. P. L., Alves, Karina A., Gandolfo, Marco A., Dario, Gustavo, Oliveira, Rone B.
FONTE
Eng. Agríc.
DATA DE PUBLICAÇÃO
2017-12
RESUMO
ABSTRACT: Spraying of crop protection products can be affected by weather conditions and spray nozzles, altering deposition patterns and coverage of the target surface. The objective of this research was to analyze the quality of sprayings performed in three periods of the day (9:00 am, 2:00 pm, and 6:00 pm), using two different droplet sizes (fine and coarse) in soybeans. Coverage and deposition were evaluated in the upper, middle, and lower portion of soybean canopy. Spraying the products at 2:00 pm increased leaf coverage in the medium portion but also increased losses to the soil. Spray nozzles with fine droplet sizes provided greater coverage and deposition in the medium and upper portion of the crop for the sprayings performed in the morning. If compared to coarse droplets, fine droplets increased leaf coverage and had no interference with the losses to the soil.
Documentos Relacionados
- EVALUATION OF DROPLET SPECTRA OF THE SPRAY TIP AD 11002 USING DIFFERENT TECHNIQUES
- Production performance and egg quality of quails (Coturnix japonica) during several periods of the day
- Impact of Soil Drying-Rewetting Stress on Microbial Communities and Activities and on Degradation of Two Crop Protection Products
- Weed interference periods in sesame crop
- Physiological Quality of Carioca Bean Seeds Submitted to the Application of Desiccant Herbicides in Two Periods