Particle drift simulation from mesotrione and rimsulfuron plus thifensulfuron-methyl mixture through two nozzle types to field and vegetable crops

Brankov, Milan; Alves, Guilherme Sousa; Vieira, Bruno C.; Zaric, Milos; Vukoja, Barbara; Houston, Trenton; Kruger, Greg R.

doi:10.1007/s11356-022-24938-x

Cited by 1 publication

(1 citation statement)

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“…The correct deposition of the spray solution on the target depends on the droplet size distribution provided by the spray nozzles [ 21 ] and wind speed and direction. Spray nozzles are designed to control the characteristics and direction of the solution spray [ 22 ]. Flat fan nozzles are commonly used in many applications and may feature an extended range, air induction, and pre-orifice.…”

Section: Introductionmentioning

confidence: 99%

Control of Urochloa decumbens Using Glyphosate Applied by Remotely Piloted Aircraft and Ground Sprayer with Different Spray Nozzles

Lopes,

Cunha,

Nomelini

et al. 2024

Plants

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The use of remotely piloted aircraft (RPA) to spray pesticides currently occurs, but knowledge about this technology is lacking due to the different locations, targets, and products applied. The objective of this study was to evaluate the control of Urochloa decumbens with glyphosate applied using an RPA (10 L ha−1) equipped with different spray nozzles (XR 11001 and AirMix 11001). For the purpose of comparison, ground application was also performed (100 L ha−1). The deposition was evaluated by means of the quantification of a tracer by spectrophotometry, the droplet spectrum was evaluated with water-sensitive paper, and the control efficiency was evaluated based on visual measurements with percentage scores. Statistical process control was used to analyse the quality of the deposition in the area. The results showed that the application via RPA presented a greater amount of tracer on the leaves than the ground application, suggesting that the former is a good option for application, even providing a lower coverage and number of droplets per area. Both application methods were effective at controlling Urochloa decumbens. The nozzles showed potential for use in applications, with control efficiency higher than 84% from 21 days after application. The percentage of droplets smaller than 100 μm in the applications was less than 5%. No nonrandom behaviour was observed during deposition, indicating a high-quality process.

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Section: Introductionmentioning

confidence: 99%