Comparison between standard and drift reducing nozzles for pesticide application in citrus: Part I. Effects on wind tunnel and field spray drift

Torrent, Xavier; Garcerá, Cruz; Moltó, Enrique; Chueca, Patricia; Abad, Raquel; Grafulla, Carmen; Román, Carla; Planas, S.

doi:10.1016/j.cropro.2017.02.001

Cited by 47 publications

(35 citation statements)

References 12 publications

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“…Additionally, all curves showed continued decreased deposition as distance increased from 1 to 30 m, but the rate of decrease varied among the three treatments, keeping, though, a common trend for all treatments. Similar results in both vineyard and orchard experiments have also been found by other researchers [65][66][67][68].…”

Section: Sedimenting (Fallout) Spray Driftsupporting

confidence: 91%

“…Furthermore, in all treatments, spray drift deposition decreased with increasing height above ground, especially at 5 m distance from the sprayed area. This shape of the airborne drift profile is similar to the profile described by other researches in orchards [67,74], while there are also studies in vineyards showing that the airborne spray drift deposition increased with increasing height [64]. This discrepancy is justified by the fact that spray drift amount depends heavily on the architecture and geometry of the canopy [75,76].…”

Section: Airborne Spray Driftsupporting

confidence: 85%

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Development and Field Evaluation of a Spray Drift Risk Assessment Tool for Vineyard Spraying Application

et al. 2019

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Spray drift is one of the most important causes of pollution from plant protection products and it puts the health of the environment, animals, and humans at risk. There is; thus, an urgent need to develop measures for its reduction. Among the factors that affect spray drift are the weather conditions during application of spraying. The objective of this study was to develop and evaluate a spray drift evaluation tool based on an existing model by TOPPS-Prowadis to improve the process of plant protection products’ application and to mitigate spray drift for specific meteorological conditions in Greece that are determined, based on weather forecast, by reassessing the limits for wind speed and direction, temperature, and air relative humidity set in the tool. The new limits were tested by conducting experimental work in the vineyard of the Agricultural University of Athens with a trailed air-assisted sprayer for bush and tree crops, using the ISO 22866:2005 methodology. The results showed that the limits set are consistent with the values of the spray drift measured and follows the tool’s estimates of low, medium, and high risk of spray drift.

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Section: Sedimenting (Fallout) Spray Driftsupporting

confidence: 91%

Section: Airborne Spray Driftsupporting

confidence: 85%

Development and Field Evaluation of a Spray Drift Risk Assessment Tool for Vineyard Spraying Application

et al. 2019

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“…This study emphasizes the advantage of the use of the tested DRN instead of STN during pesticide applications with axial fan airblast sprayers in citrus orchards, since drift was reduced (Torrent et al, 2016) and CRS control efficacy was not compromised under the conditions of the experiments.…”

Section: Discussionmentioning

confidence: 81%

“…In conclusion DRN have been found to be a viable solution to reduce drift (Torrent et al, 2016) without compromising efficacy of pesticide applications against CRS in citrus under Mediterranean conditions, achieving similar number of scales per fruit, development of the number of scales per fruit through the season, distribution of the pest in the canopy and percentage of un-infested fruit or infested fruit with more than 3 scales or more than 10 scales at harvest. Furthermore the use of DRN did not affect the residue levels nor the population of Aphelinidae natural enemies.…”

Section: Discussionmentioning

confidence: 93%

Comparison between standard and drift reducing nozzles for pesticide application in citrus: Part II. Effects on canopy spray distribution, control efficacy of Aonidiella aurantii (Maskell), beneficial parasitoids and pesticide residues on fruit

et al. 2017

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“…778 Engineering tection work during the process of developing China's agricultural economy, because it is one of the important means to ensure high yield and stable yield of crops [1] [2] [3]. Currently, chemical control is the most effective prevention and treatment method among the three crop protection methods (physical control, chemical control, integrated control), and spraying agro-chemical pesticides is the most commonly used method in chemical control [4] [5] [6].…”

Section: Introductionmentioning

confidence: 99%

The Influences of the Nozzle Throat Length and the Orifice Grooving Degree on Internal Flow Field for a Multi-Entry Fan Nozzle Based on FLUENT4

Deng¹,

Xu²,

Li³

et al. 2019

ENG

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Spray nozzle is a key component in equipment for plant protection and water-saving irrigation. The fan nozzle is a kind of spray nozzle, which is widely used in agriculture and forestry for irrigation and control of diseases, insects, and weeds. In consideration of the increasing velocity of the flow field, when the hydraulic pressure remains unchanged and the flow path becomes narrow, and because the increase of the velocity of spray drops can increase the penetrability of spray drops into the plant canopy, a kind of new fan nozzle with multi entries and simple inner structure was designed and the influences of its structure parameters on the inner flow field were analyzed using FLUENT software. The experimental results showed that the influence of the throat length on the inner flow field of the nozzle was insignificant, while the orifice grooving degree had a significant effect on inner flow field of the nozzle. The larger the grooving degree was, the smaller the pressure and velocity of internal flow field of the nozzle. The nozzle throat length had little influence on the velocity change of internal flow field. Positive correlation was shown between throat length and flow field velocity.

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Comparison between standard and drift reducing nozzles for pesticide application in citrus: Part I. Effects on wind tunnel and field spray drift

Cited by 47 publications

References 12 publications

Development and Field Evaluation of a Spray Drift Risk Assessment Tool for Vineyard Spraying Application

Development and Field Evaluation of a Spray Drift Risk Assessment Tool for Vineyard Spraying Application

Comparison between standard and drift reducing nozzles for pesticide application in citrus: Part II. Effects on canopy spray distribution, control efficacy of Aonidiella aurantii (Maskell), beneficial parasitoids and pesticide residues on fruit

The Influences of the Nozzle Throat Length and the Orifice Grooving Degree on Internal Flow Field for a Multi-Entry Fan Nozzle Based on FLUENT4

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