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Spray classification for selected flat fan nozzles

100%

Czaczyk Z.

Journal of Plant Protection Research

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2012

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tom 52

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nr 1

The flat fan nozzles made by Mikołajczak Agro Technology Company (MMAT) (standard RS, and pre-orifice AZ), in the ISO sizes of: 02, 03, and 04 were evaluated. The spray quality parameters: DV10, DV50, DV90, and RS, in the working pressure range of: 150, 300 and 450 kPa, were determined. The coefficient of volume fraction droplets smaller than 100 μm was also calculated. The spray classification of MMAT nozzles was defined according to ASAE standards. This information should be useful for the sprayer operator when making a selection of a field sprayer's working parameters according to the pesticide use guide.

2

Automatically controlled sprayer to implement spray drift reducing application strategies in orchards

84%

Doruchowski G., Swiechowski W., Gogyn A., Holownicki R.

Journal of Fruit and Ornamental Plant Research

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2011

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tom 19

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nr 1

Within the EU project ISAFRUIT (www.isqfruit.org) a Crop Adapted Application System (CASA) was developed to ensure precise, efficient and safe spray application in orchards, according to actual needs of the crop and with respect to the environment. The CASA system consists of three sub-systems: (i) Crop Health Sensor (CHS) identifying heath status of fruit crops, (ii) Crop Identification System (CIS) identifying the tree canopy size and density, (iii) Environmentally Dependent Application System (EDAS) identifying environmental circumstances during spray applications. In order to protect sensitive areas within the orchards surroundings (e.g. surface water, melioration wells, public sites) the spray application parameters such as droplet size and air flow velocity need to be carefully adjusted taking into account wind direction and velocity as well as position of sprayer in relation to these areas. On EDAS sprayer wind velocity and direction is measured with an ultrasonic anemometer, and sprayer position is determined by GPS. Nozzles are altered automatically depending on wind situation to adjust droplet size according to drift risk level. A novel fan construction allows the supporting airflow to the left and right hand sections of the sprayer to be adjusted independently. This adjustment is done automatically depending on the wind situation and sprayer position.

3

The effect of spray quality produced by different nozzles on efficacy of weed control in spring barley

84%

Kierzek R.

Journal of Plant Protection Research

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2002

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tom 42

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nr 1

In four-year experiments the influence of droplet size and nozzle designs on the activity of a commercial herbicides triberenuron-methyl (Granstar 75 WG) and mixture of 2,4 D, dicamba, and mecoprop (Aminopielik Tercet 500 SL) applied to broadleaf weeds in spring barley was examined. The recommended and half doses were applied at 200 and 280 l ha⁻¹ and at 250-570 μm (VMD) diameter droplet sizes, using air inclusion (ID 12003), low drift (TT 11003) and conventional flat fan (11003 XR) nozzles. The results showed that smaller droplet size increased herbicide performance at constant spray volume, regardless of the droplet size range investigated. A significant interaction between the droplet size and herbicide type was observed. Generally, for triberenuron-methyl a performance was increased at smaller droplet size (250-270 μm), but significant increase of herbicide activity only at half dose was obtained. There were no significant interactions between droplet size and performance of mixture 2,4 D, dicamba, and mecoprop.

Ograniczanie wyników

2 Journal of Plant Protection Research

1 Journal of Fruit and Ornamental Plant Research

1 Czaczyk Z.

1 Doruchowski G.

1 Gogyn A.

1 Holownicki R.

1 Kierzek R.

1 Swiechowski W.

1 2012

1 2011

1 2002

Spray classification for selected flat fan nozzles

Automatically controlled sprayer to implement spray drift reducing application strategies in orchards

The effect of spray quality produced by different nozzles on efficacy of weed control in spring barley