This investigation was carried out to study the effect of the primary tillage implement on soil pulverization and specific energy. The studied variables are the tillage implement and the plowing speed. While specific energy, soil mean weight diameter (SMWD), soil pulverization ratio (Ф ≤ 22 mm), fuel consumption and specific energy efficiency (SEE) were measured and determined as a performance indicators. The tillage implement and the plowing speed affected on the energy required for plowing a unit area (SEA) and the energy required for plowing a unit volume (SEV). By increasing the plowing speed from 0.

An electronic feed device system has an accelerometer (ADXL345), Arduino Uno microcontroller, pulltype solenoid, and a 12-V battery. The system used to design and create a new method to measure and adjust the distance between seeds into hills. The seed metering devices connected with the seeding unit was calibrated laboratory and experimentally studied at the "Test and Research Station of Tractors and Farm Machinery, Alexandria Governorate" to evaluate an electronic feeding device performance for seeding paddy and sorghum seeds. The experiment variables included four operating speeds of 0.5, 0.8, 1.2 and 1.5 k.m.h -1 with a distance between hills of 10, 15 and 20 cm, respectively. The results showed that the maximum qualities of feed index for sorghum seeds were 98.09, 96.96, and 96.11% at operating speed of 0.5 k.m.h -1 at distances between hills of 10, 15 and 20 cm, respectively. The maximum values of seeds longitudinal deviation (C.V.) for sorghum seeds were 9.25, 14.51, and 15.7% at operating speed 1.5 k.m.h -1 at distances between hills of 10, 15 and 20 cm, respectively. An electronic feed device showed a high accuracy for adjusting the distance between hills with no high effect of seeds germination.