otal hydraulic resistance on an upland agricultural site may be influenced by several factors including standing vegetation. In this laboratory study, Darcy-Weisbach roughness coeflcients were measured for corn, cotton, sorghum, soybeans, sunflower, and wheat vegetation. Experimental variables used in this investigation in addition to crop type included plant population, row spacing, row orient...

in order to investigation the effect of row spacing and seeding rate on alfalfa (medicago sativa l. cv. mesasirsa), an experiment was carried out at the research farm of khouzestan agricultural research center from 2000 to 2004. this research was conducted in the form of  a split plot design in a randomized complete block, with four replications. main plot was three row spacings (50, 60 and 70 ...

The engineering wake models by Jensen [1] and Frandsen et al. [2] are assessed for different scenarios simulated using Large Eddy Simulation and the Actuator Line method implemented in the Navier-Stokes equations. The scenarios include the far wake behind a single wind turbine, a long row of turbines in an atmospheric boundary layer, idealised cases of an infinitely long row of wind turbines an...

Punched rows of coaxial, circular prismatic dislocation loops can be produced in a crystal by several mechanisms: growth of a second phase in a ductile matrix (1), growth of gas bubbles in irradiated metals (2), mechanical indentation (3), elastic constant mismatch strains induced by isostatic pressurization (4) or by shear (5) and strain mismatch due to a difference of coefficient of thermal e...

Cultural weed control practices such as narrow row spacing can be a key component of successful management. Experiments were conducted in the Kansas River Valley to evaluate interactions herbicide programs and corn spacings on grain yield. There no differences at site with low density. However, high Palmer amaranth density, Resicore applied 15- 30-inch rows Bicep + Acuron 15-inch resulted great...