Tema ovoga rada bila je opisati princip rada i sjetve sa pneumatskom sijaĉicom koja radi uz pod tlak odnosno usisavanje zraka. U radu je opisana razlika izmeĊu mehaniĉkih i pneumatskih sijaĉica gdje je velika paţnja pridodana opisivanju rada pneumatske sijaĉice. Iz svega se moţe zakljuĉiti da se pod tlaĉnim sustavom uvelike poboljšala kvaliteta sjetve ne samo jedne vrste nego više kultura što ovoj sijaĉici daje status univerzalne. Sve više ima pneumatskih sijaĉica tvornice OLT na podruĉju Republike Hrvatske što zasigurno doprinosi i samom opstanku tvornice i poljoprivrede. Pneumatska sijaĉica je sigurna i jednostavna za korištenje.

The topic of this study was to describe the principle of working and seeding with pneumatic seed drill. The working mechanism is based on negative pressure (air intake). The study describes a difference in between mechanical and pneumatic seed drill and the emphasis was put on pneumatic seed drill mechanism. To sum up, pneumatic mechanism provides higher quality of sowing of not just only one than a lots of crops (cultivated plants). That is why this pneumatic seed drill becomes universal. Nowadays in Croatia, there are more and more pneumatic seed drill made by OLT company and for sure that results with supporting and growth of OLT company also with upgrading of the Croatian agriculture. Pneumatic seed drill is the safe and simple to use.