University of Zimbabwe

About: University of Zimbabwe is a education organization based out in Harare, Harare, Zimbabwe. It is known for research contribution in the topics: Population & Acquired immunodeficiency syndrome (AIDS). The organization has 4378 authors who have published 6800 publications receiving 160720 citations. The organization is also known as: UZ & University College of Rhodesia and Nyasaland.

The use of wild foods during periods of food shortage in rural Zimbabwe

Abstract: Studies in various parts of Africa have shown marked increases in the use of the wild as a source of food in times of severe food shortage. This paper examines the utilization of wild foods by rural people in seven villages located in the low rainfall regions of Zimbabwe. These regions experienced repeated droughts and food shortages during the 1980s. It is shown that, unlike in other parts of the continent, there was no marked increase in the use of wild foods as a strategy to mitigate the shortages. Instead, wild foods are used mainly as a supplement to the diet even during periods of severe stress. This is attributed to a number of factors, particularly the availability of alternative sources of cash which can then be used to purchase food as well as recourse to government food transfer programmes.

The politics of IWRM in Southern Africa

Abstract: This article offers an approach to the study of the evolution, spread and uptake of integrated water resources management (IWRM). Specifically, it looks at the flow of IWRM as an idea in international and national fora, its translation and adoption into national contexts, and the on-the-ground practices of IWRM. Research carried out in South Africa, Zimbabwe and Mozambique provides empirical insights into the politics of IWRM implementation in southern Africa, the interface between international and national interests in shaping water policies in specific country contexts, and the on-the-ground challenges of addressing equity, redress and the reallocation of water.

Effect of design parameters of flat tillage tools on loosening of a clay soil

Abstract: Very little research has been done to investigate soil loosening as a function of the geometry of the tillage tool and of the original soil properties and moisture content. A field experiment was conducted to observe the effects of the geometric parameters of flat tillage tools on their draft, cutting efficiency and loosening of a moist clay soil. The test tool variables included rake angles to the horizontal of 30, 60 and 90°, widths of 75 and 150 mm and depths of operation of 100, 150 and 200 mm. Measurements were taken of draft, disturbed soil cross sectional profiles and the initial area of soil disturbed by the tools. The resulting draft requirement increased with width, depth and rake angle of the tool. The cross sectional area of soil disturbed did not change appreciably with rake angle, but the significant increase in draft with angle resulted in markedly diminished soil cutting efficiency (area divided by draft). The degree of soil loosening was generally smaller at a rake angle of 60° than at 30 or 90°, and tended to be higher at greater depths of operation. In addition, a larger depth to width ratio generally increased the degree of loosening. Results for the soil studied indicate that the best implement design for low draft, high cutting efficiency and superior soil loosening should have a rake angle of about 30° and should be fairly narrow with a depth to width ratio of 2 or more.