The paper refers to those mechanical soil- manipulating actions that nurture crops. Some researches are made on different types of plows: mouldboard plows, disk plows, middle-breakers. The experiments refer to the effect of hard surfing on wear and draft of 35 cm flat expendable shares in dry sandy loan-soil. There also are considerations made on disk plow adjustments and sub-surface tooling adjustments. The material used is mainly the plow in different types and the method consists in direct measurements of certain parameters in order to make diagrams and to achieve different adjustments. The originality of the paper consists in the experiments made by author on different tillage machines.

tillage machines; plows

Presentation: oral