Comparison between No-Tillaga and Conventional Farming Systems and their Impact on Some Performance Indicators and Wheat Yield

A field study was conducted in loamy agricultural soil of Baghdad Governorate, Tarmiyah District, during the 2021-2022 growing season. The research aimed to evaluate the feasibility and impacts of no-tillage wheat planting systems on plant growth and yield. The experiment examined three factors: tractor operational speed, seed rate, and seeder configurations. Three speed levels 4.23, 6.54, and 8.37 km/h, two seed rates 100 and 140 kg/ha, and three seeder setups were tested. The indicators evaluated included operational productivity, draft force, soil bulk density, and 1000 grain weight. The Randomized Complete Block Design (RCBD), with a nested arrangement and three replicates, was employed. The mean comparisons carried out used the Least Significant Difference (LSD) at the 0.05 significance level. The highest operational productivity of 1.87 ha/h and 1000-grain weight of 48.7 g were achieved with the 8.37 km/h speed, 140 kg/ha rate, and the Z seeder. Conversely, the 4.23 km/h speed, 100 kg/ha rate, and Z seeder resulted in the lowest draft force of 125.76 kgf and soil bulk density of 1.030 mg/m³.