Effect of Moldboard types, Two depths of Tillage and Two speeds of Tractor in some Physical Properties and Pulverization of Soil

Factorial experiment under randomized complete block design with three replication was conducted in field collage of Agricultural Engineering Science – University Baghdad 2022, for study effect two types moldboard slatted and general purpose some physical properties depths tillage 15 25 cm speeds tractor 4.146 7.224 km/hr. Slatted recorded least (best) number clods > 10 4.58 clod/m2, soil bulk density 1.259 g/cm3, higher porosity 52.48 % volume disturbed 804.14 m3/h. Depth got 967.21 lower 4.91 1.209 g/cm3 54.35 %. Speed km/h 983.79 m3/ h 7.50 clod/m2. best No significant interaction speed porosity. The rest all interactions were significant.