Size selection of agricultural machinery must necessarily base on anticipated performance and anticipated cost. In field machinery selection, the most pertinent variable is size or capacity of the machine. A computer program was developed in C ++ programming language, to predicted implement performance parameters are total field time, theoretical field capacity, effective field capacity and field efficiency for 1.0, 1.5 and 2 m width implement at operation speed of 4, 4.5, 5, 5.5 and 6 km/hr. Program was built, compiled and was then debugged. It was found that as speed and implement width increased, the total field time decreased while theoretical field capacity and effective field capacity increased and field efficiency decreased. The highest field efficiency was 85.5% and it was recorded by implement width of 2 m at 4.5 km/hr speed while the lowest field efficiency was 80.7% and it was recorded by implement width of 1 m 6 km/hr. It was concluded that width of plow found to has higher effect than plow operating speed on increasing the effective field capacity, consequently, the field efficiency.
Gum Arabic (GA) subsector in Sudan is largely structured by performance of its marketing systems and prevailing policy intervention. The marketing systems of GA commodity are indicated by the rural traditional, the urban and the auction markets. The commodity has been exposed to different scenarios of policy innervations ranging from monopoly, concession, liberalization and oligopoly measures. The current paper is intended to describe and assess the competence of gum Arabic marketing system at Elobeid Crops Market (ECsM) under the prevailing policy measures. Investigations, in such respect, entail to identify of the active GA stakeholders, market infrastructures, administrative setups, marketing channels, forces of supply and demand, pricing mechanisms and quality control measures. The paper applied a composite of research methodologies including descriptive statistics and policy analysis matrix. The findings revealed that GA producers, as major stakeholders, do not often exist physically at ECsM. The gum Arabic companies do not show up directly at the auction market. Results emphasized varying comparative advantages and competiveness pertaining GA trade at the auction market. Additionally, the oligopoly nature of the market is still predominating despite the adopted liberalization measures. Having understood the nature and complexity of GA local marketing systems in the North Kordofan State, the current paper proposed some arguments for improving competence GA stakeholders in the market.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.