20.500.12556/DKUM-59205 KVALITETA NANOSA FFS V NASADU JABLAN V ODVISNOSTI OD HITROSTI VOŽNJE PRŠILNIKA THE EFFECT OF SPRAYER DRIVING SPEED ON THE PESTICIDE DEPOSITION QUALITY IN APPLE ORCHARD Namen raziskave je bil ugotoviti, ali in kako hitrost vožnje pri pršenju vpliva na količino depozita škropilne brozge na jablanah? Testiranje smo opravili v dveh različnih nasadih jablan pri dveh različnih hitrostih vožnje (6 in 9 km/h), dveh strojih in pri uporabi dveh različnih šob (Albuz ATR in Albuz TVI). Prvi stroj je imel standardni aksialni ventilator z enovitim zračnim tokom, drugi stroj pa je imel dva ventilatorja, ki sta imela združen tok zraka. Povečanje hitrosti vožnje iz 6 na 9 km/h povzroči povečanje izenačenosti pokrovnosti in normaliziranih depozitov znotraj različnih točk dreves in tudi med obodom krošnje in notranjim delom. Pri obeh strojih s povečevanjem hitrosti dobimo izboljšanje kakovosti nanosa na zunanjem delu krošnje. Pri prvem stroju se to zgodi predvsem na račun podaljšanja poti zraka skozi krošnjo (manjše odnašanje depozita iz robne cone), pri drugem stroju pa na podoben način in delno na račun zmanjšanja depozicije v notranjosti krošnje (večji povratni upor zračnega toka proti obodu). Uporaba šobe TVI je v primerjavi s šobo ATR pri obeh gojitvenih oblikah nekoliko izboljšala kakovost nanosa v zgornjem delu krošnje in na obodu krošnje, a nekoliko zmanjšala v spodnjem delu krošnje in na spodnji strani listov. The purpose of the study was to determine whether and how the working speed of spraying affects the depositon of PPP on the apple trees? Testing was carried out in two different apple orchards at two different working speeds (6 and 9 km/h), with two different sprayers and with use of two different nozzles (Albuz ATR and Albuz TVI). The first machine has a standard axial flow fan with central air stream, the second machine has two fans, which form a combined airstream. Increasing the working speed from 6 to 9 km/h results in increased uniformity of coverage and normalized deposits in different points of trees and also between the periphery of the crown and its inner part. In both cases (both machines) increasing of working speed results in better quality of spray deposit on the outside of the tree crown. In the case of the first machine this happens mainly due to the extension of the air flow path through the tree crown (less drift from the peripheral zones). In case of second machine, however, in a similar manner, and partly at the expense of reducing the spray deposit on the interior of the tree crown (increase in the return resistance of the air flow towards the crown periphery). Using the TVI nozzle compared with the application with the ATR nozzle in both tree training systems slightly improved the quality of coverage on the upper part of the tree crown and on the periphery of the tree crown, but fell slightly in the lower part of the treetop and on the underside of leaves. pršilnik nanos depozit hitrost sprayer application spray deposit speed true true false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2016-05-09 13:25:57 2016-05-30 08:33:07 2022-06-20 03:05:53 2019-07-11 11:06:14 2016 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:W8IQWS5M MAG_Zupan_Spela_2016.pdf MAG_Zupan_Spela_2016.pdf 1 C72B0365E18BC89C755069AA174BF720 e55d1cfb3ee1a438b9df34df19ede6237dfa5356377f12cfc82bbb2c5ecec07f 7232a069-7c0c-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=91429 Fakulteta za kmetijstvo in biosistemske vede 0 0 0