SEED AND DRY STEM YIELD OF HEMP DEPENDING ON CULTIVAR AND PLANT DENSITY

Istraživanje je provedeno kroz poljske pokuse na pokušalištu Visokoga gospodarskog učilišta u Križevcima i na OPG-u Trglačnik u Vidovcu u 2015. godini. U pokusu je istraživano 6 sorata industrijske konoplje (Fedora 17, Futura 75, Felina 32, Ferimon, Santhica 27 i USO 31) i dvije gustoće sklopa. Planirane gustoće sklopa bile su 100 i 200 biljaka/m2 u žetvi (20 i 40 kg/ha sjemena). Pokus je postavljen prema shemi slučajnog bloknog rasporeda u četiri ponavljanja. Na pokusnim površinama provedena je uobičajena agrotehnika za konoplju. Ostvareni broj biljaka u žetvi iznosio je 91 - 102 biljke/m2 kod sjetve 20 kg/ha sjemena, odnosno 157 - 197 biljaka/m2 kod sjetve 40 kg/ha sjemena. Sorta Futura 75 sijana u većoj gustoći sklopa (200 biljaka/m2) ostvarila je najveći prinos sjemena na oba lokaliteta (1904,0 kg/ha na lokalitetu Križevci; 1319,2 kg/ha na lokalitetu Vidovec). Statistički značajno najveći prinos suhe stabljike na oba lokaliteta ostvarila je također sorta Futura 75 sijana u većoj gustoći sklopa (20,9 t/ha na lokalitetu Križevci; 16,3 t/ha na lokalitetu Vidovec).The investigations were carried out by means of field experiments at the College of Agriculture in Križevci and at the family farm Trglačnik in Vidovec in 2015. The investigations included six cultivars of industrial hemp (Fedora 17, Futura 75, Felina 32, Ferimon, Santhica 27 and USO 31) that were sown in two plant densities. Planned densities were 100 and 200 plants/m2 (20 and 40 kg seeds/ha). The experiment was set up according to the randomized complete block design with four replications. On the experimental fields usual common agricultural preparations for hemp were made number of plants at harvest was 91 - 102 from 20 kg seeds/ha, or 167 to 197 plants/m2 from 40 kg/ha of seeds. The cultivar Futura 75 sown in higher plant density (200 plants/m2) achieved a highest average seed yield at both sites (1904.0 kg/ha at the site Križevci; 1319.2 kg/ha at the site Vidovec). Statistically significantly highest average dry stem yield at both sites (20.9 t/ha at the site Križevci, 16.3 t/ha at the site Vidovec) achived a cultivar Futura 75 sown in higher plant density