Measured and modeled maize and soybean growth and water use on pipeline disturbed land

Agricultural traffic management systems and soil health

“…Kim et al (2010), Czyz (2004), and Berisso et al (2012) found that soil compaction reduces the number of larger pores and thus affects total porosity. Shaheb ( 2019) reported almost two-fold higher macro porosity in untrafficked soil in comparison to trafficked soil, which agrees with observations made by Antille et al (2016b) and Ebrahimi et al (2022) based on model-derived data. Millington et al (2016) found that reduced pore size from soil compaction results in anaerobic conditions, reducing plant establishment and root dry mass of winter barley in compacted areas.…”

Trends, Opportunities, and Challenges of the Ethiopian Soybean Export Market in the Past Two Decades (2004–2022)

“…Similar studies identified production/productivity, foreign price level, real exchange rate, and infrastructure hinder the performance of the sector [12], and results supported that real exchange rate challenges the sector [33,34]. Similar findings were revealed by Ebrahimi et al [35] except for some factors including domestic price, term of trade, and fertilizer input. Another study on determinants of Ethiopian agricultural exports using two-step GMM by Eshetu and Mehare [2], revealed that the road network, the corruption index of the country, gross domestic product, and lagged export values as causes for low performance of the sector, consistency findings were revealed that the corruption index of the country [33] and impurity or adulteration supply of products for instance 90% of the soybean has been rejected as a result of poor quality in terms of size and color as major challenge on the sector [13].…”

Systematic measurement of 3D tire-soil contact on an artificial soil

“…Pneumatic tire and track mobility systems are the main tractive devices for transferring vehicle power to overcome motion resistance and provide drawbar pull during tillage, planting, chemical application, and crop harvesting operations for off-road soil conditions. The performance of tires and tracks on soil has been the subject of much research to support the design of tractive systems, traction performance analysis of tractive systems on rigid surfaces and deformable soils, soil compaction, crop yield, and the environment (Way et al, 1997;Zoz and Grisso, 2003;Ebrahimi et al, 2022;Tekeste et al, 2023). Wulfsohn et al (1988) used a single-wheel traction tester to measure the tractive efficiency of two agricultural standard radial ply tires (18.4R38, 14.9R28) and two bias ply tires (18.4-38, 14.9-28) on a tilled Yolo loam soil, and reported that the large radial tires resulted in a 6.8% greater tractive efficiency than the large bias tires.…”

“…Comparing the PDE data reported in Zoz and Grisso (2003) and averaged among the vehicle configurations, the PDE on loose soil condition was only 91% of the PDE on firm soil conditions. Trafficking with heavier machine loads and operating at high tire inflation pressures can result in excessive soil compaction, resulting in greater soil penetration resistance that limits root growth for accessing nutrients and soil moisture, a decrease in soil hydraulic conductivity, and increased soil erosion (Ani et al, 2018;Gunimarães Júnnyor et al, 2019;, Tekeste et al, 2021, Ebrahimi et al, 2022. Studies of tire-soil interaction have gained importance over the last decade with the introduction of Increased Flexion (IF) and Very High Flexion (VF) increased deflection radial tires with load-carrying capacities 20% and 40% higher than the standard radial agricultural tires at the same tire inflation pressure, respectively .…”