Effect of spray angle and spray volume on deposition of a medium droplet spray with air support in ivy pot plants

Abstract

Spray deposition can be improved hugely simply by changing some spray boom settings like nozzle type, angling the spray, using air support and adjusting the spray volume to the crop.

Spray distribution evaluation of different settings of a hand-held-trolley sprayer used in greenhouse tomato crops

“…Foqué et al 43 concluded that angling the spray did not result in a higher deposition or penetration capacity compared with the standard vertical spray boom. However, later research carried out by the same authors 30 found a positive trend from using a forward spray angle.…”

“…Self-propelled and autonomous sprayers have also attracted interest because of reduced operator exposure, 19,26,27 improved work capacity 19,22 and in some cases reduced application of PPPs while maintaining the efficacy of pest/disease control. 28,29 However, problems have also been reported: poor penetration capacity exhibited by vertical boom sprayers without air assistance; 28,30 management of hand-held trolleys depending on the soil type and sprayer design; difficulties of identifying accurate conditions for safe and efficient use of self-propelled sprayers, including aspects related to the high level of investment required. 16 The objective of this study was to improve the spray application process in Spanish greenhouses by modifying and improving an existing spray technology.…”

Assessing the application of spot spray in Nanguo pear orchards: Effect of nozzle type, spray volume rate and adjuvant

“…For the deposition data, the Shapiro–Wilk normality test was used to check whether the data were normally distributed. The Kruskal–Wallis test was used as no suitable way was found to transform the data into a normally distributed dataset 27,28 . The effect of the different application techniques was tested for the different sampling layers and points.…”

“…The Kruskal-Wallis test was used as no suitable way was found to transform the data into a normally distributed dataset. 27,28 The effect of the different application techniques was tested for the different sampling layers and points. For the droplet size data, the Shapiro-Wilk normality test proved that the droplet size dataset was not normally distributed.…”

Validation of the AGDISP model for predicting airborne atrazine spray drift: A South African ground application case study

“…(i) the application technique used (Foqué et al, 2014), (ii) the canopy type and height (Hoffmann et al, 2007), (iii) meteorological conditions (Miller et al, 2011) and (iv) the physiochemical properties of the spray material being applied Hilz & Vermeer, 2013).…”