20.500.12556/RUL-149607 Uporabnost različnih šob z dvojnim simetričnim curkom v ozimni pšenici (Triticum aestivum) Usefulness of different nozzles with double synetric jet in winter wheat (Triticum aestivum) V letu 2022 smo na Laboratorijskem polju BF izvedli poljski poskus, v katerem smo uporabili 4 različne šobe Avi Twin z dvojnim simetričnim curkom (01, 02, 03 in 04) v ozimni pšenici. Tlak škropljenja (3,0 bar) in vozna hitrost (6,0 km/h) sta bila konstantna. V poskusu smo primerjali kakovost in količino nanosa na sprednji in zadnji strani klasa ter na listu zastavičarja (1. list) in nižje ležečemu listu (2. list). Za ugotavljanje kakovosti nanosa smo uporabili na vodo občutljive lističe, medtem ko za količino nanosa barvilo Helios 500 SC (tracer). Odtise kapljic smo izmerili s kamero in programom Wise Node, medtem ko smo količino tracerja analizirali s tekočinsko kromatografijo visoke ločljivosti (HPLC). Ugotovili smo, da s šobami 03 in 04 dosežemo večjo pokritost in večjo količino tracerja na klasih in listih ozimne pšenice kot pri šobah 01 in 02. S tem smo potrdili obe postavljeni hipotezi. Manjša pokritost je bila pri vseh uporabljenih šobah na zadnji strani klasa. In 2022 field trial was conducted on the laboratory field of BF, in which we used 4 different Avi Twin nozzles with double symmetric jet (01, 02, 03 in 04) in winter wheat. Spraying pressure of 3.0 bar and speed of 6.0 km/h were constant. In the trial we compared deposit quality and deposit quantity on the front and the back side of wheat head, on the flag leaf (1st leaf) and lower lying leaf (2nd leaf). For the determination of deposit quality water sensitive papers were used, while for the deposit quantity dye Helios 500 SC (tracer). Deposit impressions were measured with camera and program Wise Node, while tracer quantity was analyzed with high-performance liquid chromatography (HPLC). We established that with the 03 and 04 nozzles higher coverage and higher tracer quantity were achieved on the wheat heads and leaves than with the 01 and 02 nozzles. With this, we confirmed both hypotheses. By all used nozzles lower coverage was on the back side of wheat head. šobe dvojni simetrični curek pokritost ozimna pšenica nozzles double symmetric jet coverage winter wheat true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2023-09-08 07:15:28 2023-09-08 07:15:32 2023-10-05 13:02:08 0000-00-00 00:00:00 2023 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 228570 163867139 34395.pdf 34395.pdf 1 FA01C767C17467C8837DC9422608C485 214e1a503b83d91d18f2cbd62a04bc2de85033c6b3d11ffcfa19014b854c8419 bbe7c5d3-4e06-11ee-9323-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=174091 Biotehniška fakulteta 0 0 0