Abstract
A field experiment was carried out during the agricultural season (2012-2013) in Moderate Rainfall Area-MRA /Nineveh governorate. Italian Gaspardo Sc250 Seeder modified to ZT farming system used in the cultivation of bread wheat. The experiment included three factors: the first factor was Press wheels with two levels, gang press wheel and mutual press wheel, the second factor was the Opener types with two levels, Hoe (Tine) Opener and inverted (T) Opener, the third one was the seeding depths with two levels (3-4 cm) and (4.1-5 cm). This experiment was implemented with split split plot under randomized complete block design with three replicates where the press wheels represented the main plot while the Openers within subplot and seeding depths were under sub sub plot. The mechanization Traits studied were: (slippage percentage, fuel consumption, field efficiency, power requirements).The results showed a significant effect of gang press wheel in enhanced these mechanization traits: (slippage percentage, fuel consumption, field efficiency, power requirements) compared with mutual press wheel. The results also indicated the less significant value of the Hoe opener. The results again showed the significant effect of (3-4 cm) seeding depth in improving the fallowing traits: (slippage percentage, fuel consumption, field efficiency, power requirements) compared with the depth (4.1-5 cm). The interaction between the two types of press wheels and opener types had a significant effect in mechanization traits. The interaction between gang press wheel with seeding depth (3-4 & 4.1-5 cm) had a significant effect in enhancing mechanical characteristics (Slippage percentage, Fuel consumption, Field efficiency, Power requirement). The dual interaction between the Hoe tine with seeding depth (3-4 cm) recorded the best results for the following traits (Slippage percentage, Fuel consumption, Power requirements) and high field efficiency compared with other treatments. Triple interaction between gang press wheel with Hoe tine and seeding depth (3-4 cm) had best values for the studied traits (Slippage percentage, Fuel consumption, Field efficiency, Power requirements) compared with other treatments.
