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Browsing Articles, Conference and Workshop Papers Collection by Issue Date

Browsing Articles, Conference and Workshop Papers Collection by Issue Date

Now showing items 1-20 of 91

Assesssment of the Perfomance of sun drying of maize grains on perforated surfaces

Silayo, V.C.K.; Kajuna, S.T.A.R.; Omari, B. (1998)

Sun drying of maize grains on different mesh sizes ofperjorated trays using different heights from the ground was investigated. The mesh sizes used were 1.5 mm and 3 mm at the elevations of 30, 60 and 90 cm. The results ...
Relationship between the Angle of Repose and Angle of Internal Friction for Agricultural Granular Materials

Kajuna, S.T.A.R.; Rugenga, E. (1998)

The angles of repose and internal friction are important parameters which determine the flow characteristics of agricultural granular materials, such as flour, maize, beans, wheat, sorghum and rice. The angles have a big ...
Performance of maize under micro-catchment rainwater. harvesting in western Pare lowlands and Morogoro, Tanzania

Hatibu, N.; Gowing, l.W.; Mzirai, O.B.; Mahoo, H.P. (1999)

Micro-catchment Rainwater Harv.esting. (RWH) has been defined as a method of collecting run-off from a Catchment Area (CA) over short distances not exceeding 100 m and supplying it to an adjacent Cultivated Basin (CB). ...
Review of rainwater harvesting techniques and evidence for their use in semi-arid Tanzania

Gowing, J.W.; Mahoo, H.F.; Mzirai, O.B.; Hatibu, N. (1999)

Raillwater h.{pvesting (RWH) ,shuuld"be 'regarded as a continuum of techniques thill' link in-situ soil-wate!: conservation at on~'exi;-'ellle to co'nventiona!irrigation {it the ·other. bHitu KWH, comprises i~ group of ...
Technical Note on Performance of Macro-Catchment Rainwater Harvesting for Maize Production: Preliminary Results

Kajiru, G.J.; Hatibu, N.; Bakari, A.M.; Kishebuka, S. R.; Young, M. D. B. (1999)

Macro-catchment raiilwater harvesting (RWH) describes those techniques witll much larger Catchment Areas (CAs) (generally > > Iha) which generally do not fall witllin a farmer's land. The CAs and Cropped basins (CBs) ...
Soil nitrogen dynamics and relationships with maize yields in a gliricidia–maize intercrop in Malawi

Ikerra, Susan T.; Maghembe, Jumanne A.; Smithson, Paul C.; Buresh, Roland J. (Kluwer Academic Publishers, 1999-04)

Many soils of southern Africa are severely N deficient, but inorganic fertilizers are unaffordable for most sub- sistence farmers. Rotations and intercrops of legumes with crops may alleviate N deficiency through biological ...
Validation of crop weather models for crop assessment arid yield prediction under Tanzania conditions

Kihupi, N.; Dihenga, B.O.; Ntella, P. M. (2000)

Information gatheringfor early warning and crop assessment in Tanzania is based on physical inspection of standing crop in sample jields. This process is subject to human error, inadequate and is also time consuming. Recent ...
Effects on direct sun drying of maize grains on perforated and unperforated surface

Silayo, V.C.K.; Woods, J. L. (2000)

Sun drying ofmqize grains on unperforated and perforatedsurfaceswas conducted under simulated solar radiation intensity of afJout 800 Wlm: and in the field, where solar radiation intensity was variable. ,The drying depths ...
Investigation of laser and ultrasonic ranging sensors for measurements of citrus canopy volume

Tumbo, S. D.; Salyani, M.; Whitney, J. D.; Wheaton, T. A.; Miller, W. M. (American Society of Agricultural Engineers, 2002)

This study compared ultrasonic and laser measurements of citrus canopy volume with manual measurement methods. Fifteen trees with different canopy heights and volumes were used. Manual and ultrasonic measurements ...
Water productivity indicators in great Ruaha river basin: analysis and implications for decision-making and allocating water

Mdemu, M.; Lankford, B.; Kadigi, R.M.J.; Cour, J.; Kashaigili, J. J. (SUA, 2003)

The assessment of benefits from water by applying the concepts of water productivity is gaining momentum for managing water resources in river basins. A number of institutions have been in the forefront of spearheading ...
Modelling the Mtera-Kidatu reservoir system to improve integrated water resources management

Yawsona, D.K.; Kashaigili, J.J.; Kachroo, R.K.; Mtalo, F.W. (Hydro Africa, 2003)

Failure of the Mtera-Kidatu Reservoir System within the Rufiji River Basin in Tanzania in the early 1990s is investigated by considering four possible causes (i.e. sudden decrease in inflows, sudden increase in losses, sudden ...
Failure of the Mtera-Kidatu reservoir system in the Early 1990s

Yawson, D.K.; Kachroo, R.K.; Kashaigili, J.J. (SUA, 2003)

Four possible causes for the failure of the Mtera-Kidatu Reservoir System within the Rufiji River Basin in Tanzania in the early 1990s were investigated. These were sudden decrease in inflows, sudden increase in losses, ...
Rice production economics at the local and national levels: the case of Usangu plains in Tanzania

Kadigi, Reuben M. J. (International Water Management Institute (IWMI), 2003)

This report explores the production economics of paddy at the basin (Usangu), district (Mbarali), regional (Mbeya) and national (Tanzania) levels. The important features of the report are summarized in the document.
Mapping uses and competition for shared water resources: conflicts and values in Mkoji sub-catchment, Tanzania

Hermans, Leon M.; Kadigi, Reuben M. J.; Mahoo, Henry F.; Halsema, Gerardo E. van (Loskopdam, South Africa, 2004)

Conflicts over water are a common feature in closing basins and the difficulties in resolving them provide a serious barrier for the formulation of an effective IWRM strategy. Understanding the specifics of a conflict, ...
Determinants of farm-level adoption of water systems innovations in dryland areas: The case of Makanya watershed in Pangani river basin, Tanzania

Masuki, K.F. G.; Mutabazi, K. D; Tumbo, S. D.; Rwehumbiza, F. B.; Mattee, A. Z.; Hatibu, N. (2005)

Water system innovations such as rainwater harvesting involve abstraction of water in the upper catchments. Increasing adoption of rainwater harvesting in the riparian catchments could have hydrological impacts on ...
Using the PT model to determine appropriate water management for maize production: A case study of Fulwe village in Morogoro district

Pangapanga, C. P.; Marijani, B. J.; Tumbo, S. D.; Mpulila, T.; Rwehumbiza, F. B. (2005)

Fulwe village is located in Mikese ward, some 30 kilometres east of the Morogoro Municipality, along the Morogoro - Dar es Salaam highway. It is located at longitude 37º53’60’’ East, and the latitude is 6º46’ south. The ...
Crop water productivity of an irrigated maize crop in Mkoji sub-catchment of the Great Ruaha River Basin, Tanzania

Igbadun, Henry E; Mahoo, Henry F; Salim, Baanda A; Tarimo, Andrew K. P. R. (Elsevier, 2006-09-16)

Crop water productivity (CWP) is a quantitative term used to define the relationship between crop produced and the amount of water involved in crop production. It is a useful indicator for quantifying the impact of irrigation ...
GIS-based decision support system for identifying potential sites for rainwater harvesting

Mbilinyi, B. P.; Tumbo, S. D.; Mahoo, H. F.; Mkiramwinyi, F. O. (Physics and Chemistry of the Earth, 2007)

Identification of potential sites for rainwater harvesting (RWH) is an important step towards maximizing water availability and land productivity in the semi-arid areas. However, selection of appropriate sites for different ...
Evaluation of a variable rate controller for aldicarb application around buffer zones in citrus groves

Tumbo, S. D.; Miller, W. M.; Salyani, M.; Sweeb, R.; Buchanon, S. (2007-01-25)

Advances in precision farming technologies have facilitated controlled application of agrochemicals and documentation procedures to follow environmental regulations. This paper details evaluation of a commercial variable ...
Hydrological modelling to assist water management in the Usangu wetlands, Tanzania

McCartney, M.P.; Kashaigili, J.J.; Lankford, B.A.; Mahoo, H. F. (JRBM, 2008)

The Usangu wetlands, containing the Ihefu swamp, are one of the most valuable inland wetlands in Tanzania. Over the last decade, outflow from the swamp has ceased for extended periods in the dry season. This has had severe ...

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