Smallholder maize and wheat production systems are characterized by high drudgery. On-farm trials were run for three seasons in Ethiopia. The study assessed the effect of 2 WT direct seeding and growing season on (1) soil quality, and (2) maize and wheat productivity, energy and protein gains, and gross margins, on smallholder farms in Ethiopia. Fo...
Published in Classical and Quantum Gravity
We discuss three different (conformally) Carrollian geometries and their relation to null infinity from the unifying perspective of Cartan geometry. Null infinity per se comes with numerous redundancies in its intrinsic geometry and the two other Carrollian geometries can be recovered by making successive choices of gauge. This clarifies the extent...
Mechanization, digitalization, and rural youth engagement are central to African agricultural transformation. Each of these topics is associated with debates on opportunities, risks, and appropriate policy actions, which become visible in international research discourses and policy fora. In contrast, little is known about the viewpoints of nationa...
The fundamental objectives of this research were to know the technical state of the park of tractors and agricultural machines, as well as to analyze the technical-economic indices of this park inthesix municipalities of the State of Mexico. It was hypothesized that some mechanization indices were similar to or higher than those shown by FAO. To ca...
Povečano notranje puščanje hidravličnega sistema je eden izmed znakov okvare oziroma poškodbe hidravličnega sistema traktorja. Obrabi in staranju elementov v hidravličnem sistemu se ne moremo izogniti, lahko pa z ustreznim vzdrževanjem in pravilnim rokovanjem, bistveno vplivamo na dolžino uporabne dobe sistema. Namen zaključne naloge je predstaviti...
Tato diplomová práce posuzuje spolehlivost a náklady na údržbu třech generací traktorů Case Puma CVX. V teoretické části jsou popsány používané metody pro výpočet spolehlivosti. V praktické části je ukázka výpočtů a porovnání spolehlivosti jednotlivých konstrukčních skupin i celých traktorů. Následně jsou porovnány náklady na údržbu jednotlivých tr...
