摘要：In Croatia, the economic effects of different grassland sowing methods are still insufficiently explored. In order to detect the difference between grassland sowing methods a three-year field trials were performed to determine the production and economic value of grasslands sown by: direct seeding into corn stubble field with row distance of 18 cm (DSK18) or ii) 9 cm (DSK9), iii) conventional seeding (KS), iv) sod-seeding in existing grassland (RPTDS) and v) natural grassland as control (KPT). In the whole research period the highest average green mass productivity was achieved by conventional seeding (38.84 t/ha), while the lowest green mass yield had natural grassland and sod-seeded natural grassland (10.92 and 11.63 t/ha of green mass). Observed per unit of area, difference in production values ranged from 3276 kn, which was achieved with natural grass to 17.478 kn/ha, which was achieved by conventional seeding. Looking at the production efficiency, direct seeding into corn stubble field with row distance of 9 cm (3.17) has the largest coefficient, while natural grassland is on the economy border with coefficient 1.00. Relations between invested and obtained, which was measured with value of Gross Margin, is in range from 6 kn/ha (natural grassland) to 11.420 kn/ha, which was achieved by conventional seeding. Looking at the production of hay, conventional seeding with 7.11 t/ha of hay had the maximum productivity, while the natural grassland and sod-seeded natural grassland had the lowest production (2.87 and 2.86 t/ha).
关键词：grassland seeding; productivity; cost price; Gross Margin; production efficiency
