Influence of different colours of anti-hail nets on the yield and quality of hops (humulus lupulus l.)

Občasna neurja z močnim vetrom in točo lahko povzročijo veliko gospodarsko škodo v proizvodnih nasadih hmelja. S protitočnimi mrežami lahko v primeru neurja s točo obvarujemo nasad pred izgubo pridelka in izpolnimo dogovorjene pogodbene količine. Na kmetiji Jelen v Dobriši vasi v Savinjski dolini smo v letu 2019 izvajali poljski poskus, kjer smo preučevali vpliv protitočnih mrež na količino in kakovost pridelka hmelja (vsebnost alfa kislin). Poskus je bil zasnovan v standardnem nasadu Aurore (2,4 m medvrstne razdalje, 1 m razmak v vrsti), za oporo je bila postavljena lesena žičnica višine 7,2 m. Poskus je imel štiri obravnavanja: 1. črna mreža, 2. bela mreža, 3. modra mreža in 4. kontrola brez mreže. Zastavili smo ga v obliki naključnega bloka v šestih ponovitvah. Mreže, ki so bile nameščene nad rastlinami hmelja, niso ovirale izvedbe agrotehničnih ukrepov v nasadu. Na podlagi rezultatov sklepamo, da protitočne mreže statistično značilno ne vplivajo na količino pridelka hmelja. Pri črnih mrežah se je nakazala višja vsebnost alfa kislin v primerjavi z ostalimi barvami mrež in kontrolo.Occasional storms with strong winds and hail can cause big economical losses in hop garden plantations. With anti-hail nets, hop gardens can be protected from crop loss and meet the agreed contractual quantities. A field trials were conducted in 2019 at the Jelen farm in Dobriša vas in the Savinjska valley, where the impact of anti-hail nets on the quantity and quality of hops (alpha acid content) was studied. The experiment was carried out at a standard Aurora plantation (2.4 m between rows, 1 m in a row), and a 7.2 m high wooden pole and wire system was set up for supporting the plants. The experiment had four treatments: 1. black nets, 2. white nets, 3. blue nets, and 4. no nets or control. We set it up in the form of a random block in six repetitions. The nets placed above the hop plants did not hinder the implementation of agrotechnical measures at the plantation. Based on the results, it can be concluded, that anti-hail nets do not significantly affect the amount of hop yield. Black nets showed a trend of increasing alpha acid content compared to other net colours and the control set up