OF EFFICIENCY GREEN COVER IN INTERROWS UNDER INTEGRATED HOP PRODUCTION

Na poskusnem polju Inštituta za hmeljarstvo in pivovarstvo Slovenije smo leta 2005, po zadnjem osipavanju hmelja, v medvrstni prostor sejali različne dosevke: oljno redkev (Raphanus sativus), belo gorjušico (Sinapis alba), črno deteljo (Trifolium pratense) in mešanico: ajdo (Fagopyrum esculentum), grašico (Vicia sp.) in facelijo (Phacelia tanatacetifolia). Sočasno smo izvedli kontrolno obravnavo (brez dosevka). Poskus je bil zasnovan kot enofaktorski, s petimi obravnavanji v treh ponovitvah. S poskusom smo želeli preveriti prednosti in slabosti dosejavanja medvrstnega prostora v hmeljišču ter spremljati prirast dosevkov. Ugotoviti smo želeli tudi to, v kolikšnem obsegu lahko nadomestimo organsko snov v tleh. Sklepamo lahko, da je za ozelenitev najprimernejša oljna redkev, ki je poleg najvišjih prirastov in intenzitete rasti tudi dokaj neobčutljiva na gaženje s stroji. Sprejemljive rezultate je od začetka kazala tudi mešanica: ajde, facelije in grašice, vendar je ajda, ki se je polomila, dala proti koncu rastne dobe slabše rezultate. Za črno deteljo je bilo neugodno zasenčevanje, vendar pa je bujno rastla po spravilu hmelja, ko je bilo več svetlobe. Bela gorjušica se je v poskusu pokazala kot najmanj primerna zaradi najmanjšega deleža prirasta organske mase.At the experimental field of Slovenian Institute for Hop Research and Brewing the treatments with cover crops: fodder radish (Raphanus sativus), white mustard (Sinapis alba), red clover (Trifolium pratense) and mixturebuckwheat (Fagopyrum esculentum), vetch (Vicia sp.) and phacelia (Phacelia tanatacetifolia) plus control treatment (without crop) were established after the last shed of hop in 2005. The experiment was designed as a randomized block, with five treatments in three repetitions. The aim of the research was to identify advantages and weaknesses of seeding cover crops in hop field and to find the extent to which the organic matter in the ground can be substituted. Based on the results of the experiment, we can conclude that the most appropriate is fodder radish due to a rapid volume increases, growth intensity and insensitiveness for trampling with heavy machinery. At first, we achieved acceptable results with the mixture (buckwheat, phacelia and vetch), however buckwheat, which had broken up, gave the worst results at the end of the growing period. Red clover had been annoyed by screening from light interception, such as white mustard, which gave the least organic matter for increasing humus in the soil