This type of machinery is used for loosening the top layer of soil when excessive humidity prevents the use of heavier and more powerful machinery. The harrow cuts the top layer of furrow slice (after winter ploughing) and crushes the crusted soil, thus preventing excessive soil evaporation. Dragging causes soil to dry and warm up quicker, resulting in earlier seeding. The dragging harrow is also used for levelling the soil before seeding during other agro-technical seasons. This type of machinery is usually made of one or several steel angular bars, connected with chains.