Evaluating Flame-Burner Design for Weed Control in Cotton

Carter, L. M.; Colwick, R. F.; Tavernetti, J

doi:10.13031/2013.41139

Cited by 3 publications

(2 citation statements)

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“…Other research also found that quantifying flame temperature changes on the leaf surface for a particular equipment design (e.g., burner orientations) was a critical factor in understanding the selectivity of flaming application in a given cropping system [29][30][31]. Various types of burners are able to generate stationary flame temperatures from 1900 to 2600 • C, depending on specifications for gas-flow rate, nozzle size, tube length, and operating pressure [32,33]. Under field conditions, however, flame temperature on the leaf surface is much lower, as exposure time is reduced by changing vehicle speed, burner angle, and/or burner orientation [34].…”

Section: Importance Of Flame Temperature Measurementsmentioning

confidence: 99%

Influence of Burner Position on Temperature Distribution in Soybean Flaming

et al. 2020

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The main objective of this study was to identify optimal burner orientation for a newly designed flame cultivator by quantifying the flame temperature distributions of cross, back, and parallel position of burners at different heights of the soybean canopy (distance from the soil surface). Flame temperatures were measured within-row for three burner orientations at seven propane doses (20–100 kg/ha) and eight different canopy heights (0–18 cm above soil surface). Soybean plants in V3 growth stage were flamed with the same doses and burner orientations, and 28 days after treatment (DAT) crop injury (0%–100%), plant height (cm), dry matter (g) and grain yield (t/ha) were assessed. All three burner orientations had high flame temperatures at lower canopy heights (<6 cm high) that gradually decreased with increasing canopy height (6–18 cm). Measured temperatures ranged from 33 to 234 ℃ for cross flaming, 29 to 269 ℃ for back flaming and 23 to 155 ℃ for parallel flaming, with high variability in temperature patterns. Back flaming generated flame temperatures above 100℃ at a lower propane dose (27 kg/ha) compared to cross and parallel flaming (40 and 50 kg/ha). For all tested parameters, parallel and cross flaming had better impact on soybeans than back flaming, but for weed control in crop rows, cross flaming is recommended.

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Section: Importance Of Flame Temperature Measurementsmentioning

confidence: 99%

Influence of Burner Position on Temperature Distribution in Soybean Flaming

et al. 2020

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“…Flame weeding has been applied on a large scale since the 1940s in the United States and is still the focus of research (Raffaelli et al, 2010;Ulloa et al, 2010;Raffaelli et al, 2011;Ulloa et al, 2011 Datta andKnezevic et al, 2013). The use of an efficient purpose-built burner is essential for good weed control, so the need to develop suitable flamers and efficient burners remains (Carter et al, 1960;Laguë et al, 1997;Ascard, 1998;Kang, 2001;Raffaelli et al, 2013).…”

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confidence: 99%

LPG Burners for Weed Control

2015

Appl. Eng. Agric.

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This article reports on the results of a study carried out on three prototypes of open flame burners for thermal weed control. Their performance is reported in terms of flame temperature and length, in order to ascertain the best ratio between primary and secondary air, and liquefied petroleum gas (LPG) consumption. To find the best ratio between primary and secondary air, the length and temperature of the flame were recorded for each of the three burners, examined by varying the inlet sections of the primary air and secondary air. The data on temperature and the flame length of each burner were processed using multiple regression analysis. The LPG consumption was determined with one of the burners using 10 different pressures in combination with three nozzles. The data obtained were subjected to non-linear regression using two gaseous outflow models. The various combinations of primary and secondary air inlet sections affected the values of the flame length and temperature. In general, the best combinations of primary and secondary air inlet for flame temperature did not correspond to those for flame length. However, this experiment showed that the inlet of secondary air is critical for the performance of this type of burner, in terms of flame temperature. The fuel consumption trial showed that the model proposed for the gaseous outflow is suitable for describing the values of LPG consumption collected during the trial.

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