Studies on different herbicide application methods in second-crop maize fields

Üremiş, İlhan; Bayat, Ali; Uludağ, Ahmet; Bozdoğan, Nigar Yarpuz; Aksoy, Eda; Soysal, Alper; Gönen, O.

doi:10.1016/j.cropro.2004.05.004

Cited by 12 publications

(9 citation statements)

References 20 publications

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“…Similar to the current study, other studies have also reported that using a spinning disc with a low disc speed provided slightly better weed control than the flat fan nozzles, in different crops (Inman and Kapusta 1983;Walker 1986). Different results though, have been reported by other studies for maize and onion plants (Pearson and Bode 1985;Zandstra 1985;Uremis et al 2004). Knoche (1994) reported that decreasing droplet size generally caused an increase in the performance of foliage to which herbicides had been applied, whereas decreasing carrier volume mainly caused a decrease in the performance.…”

Section: Resultsmentioning

confidence: 47%

“…The results for weed control with spinning disc nozzles varied from poor to acceptable control, when used in combination with herbicides or other agents compared with conventional nozzles (Mohan and Nelson 1982;Scoresby and Nalewaja 1982;Walker 1986). Uremis et al (2004) stated that spinning disc nozzles with a reduced spray volume did not improve weed control and gave inadequate weed control with reduced dosage of herbicide. Different bandwidths with even flat fan nozzles showed similar grain yield, in weed control in maize.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Droplet Size on Weed Control in Wheat

Esehaghbeygi¹,

Tadayyon²,

Besharati³

2011

Journal of Plant Protection Research

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Abstract:The efficacy of different water volume and nozzle systems, comprising spinning-discs with two disc speeds (low volume, LV), a spinning-cage rotary atomizer (median volume, MV), a flat fan nozzle Teejet-11004 (high volume, HV), and no weed control, were assessed for the application of 2,4-D to control weeds in irrigated wheat. The herbicide was applied at the tillering stage of cultivated wheat, Ghods variety. Sprayer nozzle performance was evaluated in terms of wheat grain yield, weed shoot biomass, and wheat residual (straw), at the research farm of Shahrekord University in 2007 and 2008. ANOVA analysis indicated that nozzle type, and the year had significant effects on grain yield and dry biomass of weeds at 5% confidence. There was a significant difference between the two years of the experiment for all variants. The results indicated that the median diameter volume using the spinning disc (low disc speed) for herbicide application, gave better weed control than others. The spinning disc nozzle decreased water use and so it was cheaper to operate. It did not, however, significantly improve herbicide efficacy, especially in dense canopies compared with the conventional flat fan nozzles. The spinning-disc had more droplet uniformity at high disc speeds compared with the cage rotary atomizer, but was more effective for weed control at low disc speeds.

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Section: Resultsmentioning

confidence: 47%

Section: Introductionmentioning

confidence: 99%

Effect of Droplet Size on Weed Control in Wheat

Esehaghbeygi¹,

Tadayyon²,

Besharati³

2011

Journal of Plant Protection Research

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“…Uremis et al (2004) determined that banding was as effective as broadcast application. In their study, different bandwidths gave similar levels of weed control and corn yield, and noted that banding decreased herbicide use by up to 78 %.…”

Section: Herbicide Use Reduction In Agronomic Cropsmentioning

confidence: 99%

Strategies for Reduced Herbicide Use in Integrated Pest Management

Chandran

2014

Integrated Pest Management

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“…The chemical applicator distribution tests Fig. 2 and 3 were conducted as recommended by ASAE Standard S341.4 Procedure for Measuring Distribution Uniformity and Calibrating Granular Broadcaster Spreaders in which array of collection trays were used for performing the tests (Uremis et al, 2004). This is because outdoor testing is the most representative of what performance is achievable in the field.…”

Section: Methodsmentioning

confidence: 99%

“…Pearson found that spinning disc sprayers gave effective spray droplets with 250 µm VMD than lower values of VMDs. Uremis et al (2004) reported that 250-500 µm drop diameters for herbicide applications which is easier to deliver to the target surfaces. The high volume application methods used by some farmers to apply chemicals could result in higher costs compared to using low volume method, hence the development of dual purpose equipment for granular fertilizer and pesticides application in the paddy field to address the problems of cost in paddy production and environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a Dual-Purpose Chemical Applicator for Paddy Fields

Abubakar¹,

Ahmad²,

Jamarei³

et al. 2011

American Journal of Applied Sciences

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Problem statement: One of the major problems of rice production is the shortage of labor resulting from migration from rural to urban areas, making it very difficult to meet peak demands for paddy production. In most developing countries of Southeast Asia, agricultural mechanization of paddy field operation is mostly carried out using conventional machines. For example in rice production powerintensive operations such as water pumping, land preparations, transplanting seedlings, harvestings and threshing are being mechanized but other operations like fertilizer and chemical (pesticides) applications are not yet fully mechanized, rather they are performed manually with motorized backpack knapsack sprayers which have many disadvantages. The main objective of this study was to develop and evaluate a new concept dual-purpose chemical applicator for paddy fields farmers in order to complement the labor shortage during the peak period. Approach: A dual-purpose chemical applicator for flooded paddy field was evaluated using the S341.4 Standard in respect to the distribution patterns/droplet sizes and uniformity of spreading/spraying for the chemical application to boost agricultural mechanization in rice production and also to overcome the safety concern of hazardous spray drift during chemical application by the paddy farmers. The dual purpose applicator was mounted on a high clearance prime mover. The machine performances for both granular and liquid chemical application were reported. Results: Results for urea granular chemical indicate that at low (40 kg ha ) rates and 550 rpm disc speed distribution pattern skewed to the left whereas the distribution pattern shape at medium (80 kg ha ) and 1000 rpm disc speed, mean distribution pattern became poor (M-shape) and also at low and medium application rates the distribution pattern shapes lopsided to the left. For NASA glyphosate liquid chemical herbicide, the average values of (VDM) and (NMD) were 108 and 79 µm at 80 lt/ha application rate and 5000 rpm rotary disc speed and 185 and 119 µm at 80 lt/ha application rate 3000 rpm rotary disc speed. Conclusion: The experimental results from the experimental tests suggest that the average effective field capacity for the equipment with a prime mover was found to be 0.89 ha h −1 or 7.12 ha/man-day for an 8 h working day.

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Studies on different herbicide application methods in second-crop maize fields

Cited by 12 publications

References 20 publications

Effect of Droplet Size on Weed Control in Wheat

Effect of Droplet Size on Weed Control in Wheat

Strategies for Reduced Herbicide Use in Integrated Pest Management

Evaluation of a Dual-Purpose Chemical Applicator for Paddy Fields

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