20.500.12556/DKUM-11831 VPLIV NASTAVITVE DIFUZORJEV PRŠILNIKA Z RADIALNIM VENTILATORJEM NA NANOS ŠKROPIVA V TRAJNEM NASADU THE EFFECT OF DIFFUSER ADJUSTMENT ON THE SPRAY DEPOSITION OF THE RADIAL SPRAYER IN THE ORCHARD V diplomski nalogi smo proučevali vpliv nastavitve difuzorjev pršilnika z radialnim ventilatorjem na nanos škropiva v trajnem nasadu. Za nanos škropiva smo uporabili prirejen pršilnik z možnostjo nastavitve pršilne armature glede na obliko sadnega drevja. Izvedeni sta bili dve ponovitvi, in sicer: prva z vertikalno postavitvijo šob pršilnika (K) in druga s postavitvijo šob pršilnika glede na obliko dreves (M). Nanos škropiva smo ovrednotili z meritvami deleža prekrite površine na WSP lističih, ki so občutljivi na vodo. Lističe smo analizirali z napravo za optično analizo depozita škropilne brozge (Optomax Image Analyser). V obravnavanje smo zajeli deset dreves in pet praznih prostorov med drevesi. Na posameznem drevesu smo obravnavali šest območij (tri višine, dve razdalji pršilnika), v praznih prostorih med drevesi pa tri območja v višini šob pršilnika. Pri klasični postavitvi pršilnika je bilo s škropivom povprečno prekrito 22 % ciljne površine. Posamezne obravnavane dele krošenj dreves je zadelo povprečno 73 kapljic škropiva na cm2. Pri nastavljenem pršilniku glede na obliko drevesa je bilo doseženo povprečno 25 % prekrite ciljne površine s škropivom. Povprečno število kapljic, ki je zadelo posamezne obravnavane dele krošenj, je bilo 97 na cm2. Rezultati nakazujejo smiselnost nastavitve pršilnikov glede na obliko sadnega drevja, saj se s tem doseže večja učinkovitost fitofarmacevtskih sredstev in zmanjšanje negativnih vplivov na onesnaženje okolja. This graduation thesis was aimed at investigating the effect of adjusting the diffusers of a ducted air-assisted sprayer on spray deposit distribution in a permanent orchard. For the distribution we used a modified sprayer with a possibility of setting the sprayer arm according to the shape of the tree crown. Two treatments were included in the experiment: the first one was a conventional application with vertically positioned nozzles, and the second one with the position of nozzles adjusted to the shape of the tree crowns. The spray deposit was evaluated by using water-sensitive papers (WSP). The WSPs were analyzed by means of an Optomax Image Analyzer. Ten trees and five empty spaces between these trees were studied. In each tree we investigated six areas (at 3 tree heights, 2 distances from the sprayer), and in the empty spaces between the trees we analyzed 3 areas (at the same height as the spray nozzles). With conventional application an average 22 % coverage of the target area was achieved. Individual tree crown parts were, on average, hit by 73 droplets per cm². With the adjusted application there was, on average, 25 % spray coverage. The average number of droplets that hit the investigated parts of the tree crown were 97 on cm². Our experiment shows that the adjustment of spray diffusers to the shape of tree crowns increases the efficacy of plant protection products and reduces negative impacts on the environment. pršilnik fitofarmacevtska sredstva sadovnjak aerosol diffuser plant protection products orchard true true false Slovenski jezik Angleški jezik Diplomsko delo 2009-09-21 09:32:23 2009-10-16 13:07:39 2022-04-12 00:15:07 2022-04-18 03:29:22 2009 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 URN:SI:UM:DK:YLUSXX6S VS_Zeme_Tomaz_2009.pdf VS_Zeme_Tomaz_2009.pdf 1 DE0868FFD55C4037A141C220DB30E186 3b47fc1e1be65fe647612f5860ba74444973d1854277025c422d5c9fad9c118b 3cd8aed3-7c03-11eb-bb7a-00155d0001ca 20.500.12556/dkum/e7a7e6d5-64d9-47a9-8ecb-4f5704955012 https://dk.um.si/Dokument.php?lang=slv&id=10789 Fakulteta za kmetijstvo in biosistemske vede 0 0 0