List of Articles Open Access Article Abstract Page Full-Text 1 - Evaluation of MF399 tractor steering hydraulic pump defects using frequency analysis of vibration signals Open Access Article Abstract Page Full-Text 2 - Sensitivity analysis of effective factors in the lack of development of agricultural mechanization of fragmented lands using a hierarchical analytical process Open Access Article Abstract Page Full-Text 3 - Investigation of engine power and emission variables in compression ignition engines using a combination of compressed natural gas and diesel fuel Open Access Article Abstract Page Full-Text 4 - Investigating, Design and Implementation Possibility of Biogas Plant from Livestock Waste in Miandoab Township, Iran Open Access Article Abstract Page Full-Text 5 - Determining the amount of nitrogen in greenhouse cucumber leaves in order to manage fertilizer consumption by image processing Open Access Article Abstract Page Full-Text 6 - Investigating the effect of training on productivity of agricultural mechanization staff and organizational performance in Qazvin Agricultural Jihad Organization