Effects of crop densities and nitrogen fertilising on the maize grain yield

Abstract

The four-replicate tow-year study set up according to the completely randomised block design on the chernozem type of soil was carried out in the region of Srem, on the very slopes of Mt Fruška Gora, during 2004 and 2005. The Colombo hybrid for special industrial purposes was used as a material in the study. Four nitrogen rates (90-240 kg per ha-1) and four crop densities (49.300-75.200 plants per ha) were included into the study. The grain yield slightly increased with increased nitrogen rates and significantly increased with the increased crop density.

U Sremu na obroncima Fruške Gore, tokom 2004. i 2005. godine na zemljištu tipa černozem izvedena su dvogodišnja istraživanja sa hibridom specifične industrijske namene, kolomba. Ogledi su izvedeni po blok sistemu sa potpuno slučajnim rasporedom varijanti u četiri ponavljanja. Istraživanjima su obuhvaćena četiri nivoa azota (90-240 kg/ha) i četiri gustine useva (49.300-75.200 biljaka po hektaru). Prinosi zrna neznatno rastu sa povećanjem količine azota, a izrazito sa povećanjem gustine useva.