Selection of plant species, their varieties or hybrids and the formation productivity is an urgent need today due to shortage biofuel production at world level. The purpose research was reveal influence technological measures (row spacing density standing) on elements crop structure castor varieties. Research conducted during 2020-2021in field conditions study stand row width Khortytska 3 Olesi...

It is possible to build free-standing, load-bearing structures using only rocks and loops of elastic material. We investigate how these emerge, find that the necessary maximum loop spacing (the critical spacing) a function frictional properties grains elasticity confining derive model understand both relationships, which depends on simplification behavior at edge structure. higher friction lead...

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...