Original scientific paper

https://doi.org/10.33128/ag.82.3.1

IMPACT OF DIFFERENT TECHNICAL SYSTEMS AND EXPLOITATION PARAMETERS ON WORKING QUALITY OF AIR ASSISTED SPRAYERS IN PERMANENT CROPS

Davor Petrović orcid.org/0000-0003-3791-8870 ; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Đuro Banaj ; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Anamarija Banaj ; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Dario Knežević ; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Zvonko Zeko ; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska
Vjekoslav Tadić orcid.org/0000-0002-2307-9255 ; Fakultet agrobiotehničkih znanosti Sveučilište Josipa Jurja Strossmayera u Osijeku, Osijek, Hrvatska

Abstract

The research compared two types of air assisted sprayers (Agromehanika and Tifone), with the aim of determining the optimal spraying system (sensory and conventional system). The influence of technical spraying factors was investigated (norm of spraying, nozzle type, air flow rate), and the use of an ultrasonic sensor system for selective application on liquid deposit into the canopy, as well as air and ground drift. The research was set according to the ISO 22866 standard in a four-year old cherry orchard, owned by Karolina d.o.o. Osijek. With the exploitation of the Agromehanika sprayer, the largest deviation of soil drift between the conventional and sensor system was 57.77%, and was determined with the A1B2C2 treatment. The difference with Tifone sprayers was 52.54% (A1B1C1 treatment). The realized liquid deposit in the canopy did not differ significantly between the two spraying systems, and the largest realized deviation of 1.31% was determined with the Agromehanika sprayer as well as 2.17% with the Tifone sprayer. The A2B2C1 and A2B2C2 treatments achieved a 100% reduction in air drift (at a distance of 5 m from the treated row) with the Agromehanika sprayer, while the Tifone sprayer achieved the same deviation in the A1B2C1 and A2B2C1. treatments. Also, 100% deviation between conventional and selective application (sensor system) on air drift (at 10 m distance from the treated row) was achieved with treatments A2B1C1 and A1B1C1 for both sprayers. The results accomplished in this study indicate a successful reduction of the spray rate by 20% without a statistically significant difference on liquid deposit in the canopy. According to the achieved results, the Agromehanika sprayer achieved a statistically significantly higher liquid deposit in the canopy (LSD0.05 = 13.46), so it can be concluded that the mentioned sprayer is of more optimal technical construction for the cherry orchard in which the research was performed.

Keywords

air assisted sprayer; sensor system; deposit; drift; selective application

Hrčak ID:

259701

URI

https://hrcak.srce.hr/259701

Publication date:

30.6.2021.

Article data in other languages: croatian

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