Welcome to SUAIRE
Sokoine University of Agriculture Institutional Repository (SUA IR). This repository was built and is maintained by the university library (Sokoine National Agricultural Library-SNAL) , in order to collect, preserve and disseminate scholarly output generated by University research community (staff and students) members.
This repository hosts a variety of openly accessible materials including: scholarly articles and books, theses and dissertations, conference proceedings and technical reports. For assistance about depositing your research output in the repository click here. SUA IR Policy click here or any queries contact us at snal@sua.ac.tz.

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- The Agroforesty Community is a collaborative network dedicated to advancing sustainable land-use practices that integrate trees, crops, and livestock. It serves as a platform for knowledge exchange, research dissemination, and practical innovations in Agroforestry. By fostering connections among researchers, practitioners, policymakers, and local communities, the Agroforestry Community promotes environmental conservation, enhanced agricultural productivity, and resilient livelihoods.
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Recent Submissions
Assessment of HIV/AIDS risk behaviours among primary school teachers in Kinondoni district, Dar es salaam, Tanzania
(Sokoine University of Agriculture, 2008) Philip, Shoma
The cross sectional study on assessment of the HIV/AIDS risk behaviours among
primary school teachers in Kinondoni district. Dar es Salaam was conducted in 2007.
The data were collected from 150 teachers from 30 primary schools using
questionnaires, supplemented by focus group discussions (FGDs) and interviews
with Key informants. It was found that over 70% of respondents engaged in sexual
activities at the age of 15 to 25 years old therefore were in high HIV/AIDS risk;
female teachers started sexual practices much earlier. It was also found that there is
no association (p>0.05) between sex of respondents and having more than one
partner; 45.5% of 79 married respondents had more than one sexual partners
claiming to get sexual satisfaction, and financial support. 71.3% of respondents did
not use condom the last time they had sex. The logit regression showed that the
variables slightly fitted to the model (R2=39.6%, p-value = 0.000), with age.
education and income factors found to be significant predictor of respondents'
HIV/AIDS sexual risk behaviours (p<0.05, p<0.01). Indeed, respondents were
knowledgeable of HIV/AIDS from the mass media. Difficult financial position and
less commitment to religions contributed significantly (p<0.05) to HIV infection. It was concluded that respondents started sexual intercourse at early ages, have multiple sexual partners and inconsistently use condoms. However, household socio-
economic and socio-cultural aspects influence teachers’ sexual behaviour. It was
recommended that in order to minimise the HIV/AIDS risks to primary school
teachers, there should be a continuing education on the disease and improved income. However, more studies on the subject in Iringa and Mbeya are recommended since the regions are also more vulnerable to HIV/AIDS.
An assessment of the transfer and utilization of selected agricultural innovations in Musoma district
(Sokoine University of Agriculture, 1988) Wambura, Raphael Munanka
The agricultural extension system in Tanzania has
come under criticism as being ineffective, in stimulating
increased agricultural production.
Such criticism has
partly focused on the performance of extension workers
in rural areas.
This study, therefore, sought to
determine the availability of suitable Innovations to the
farmer and to assess the extent of transfer and utilization of. such innovations in villages.
The specific objectives of the study were to: take
inventory of agricultural extension innovations available
to the extension service; investigate the extent of
transfer and utilization of agricultural innovations;
identify factors contributing to success or failure in
the transfer and utilization of agricultural innovations;
and recommend guidelines which will facilitate effective
transfer and utilization of agricultural innovations.
Data were mainly collected from 23 field extension
workers and 160 farmers by use of questionnaires.
Other
data were obtained through directed discussions of the
researcher with 15 selected extension officers and village
leaders.
Notes in diary form from researcher’s observations were also used.
Data from each source were examined.
Numerical data were summarized in tables by using descriptive statistics of percentages. The study found out and concluded that agricultural
innovations are generally available in forms that vary
in terms of the degree to which they can be helpful to
the field extension worker and the farmer.
those that appeared
There were
in simplified packages that could
be easily utilized by extension workers and farmers, on
one hand, and those that were complex and therefore
not easily understood.
The extent of transfer and
utilization of agricultural innovations was found to
vary from crop to crop.
Some of the constraints to the
transfer of such innovations are of extension nature
while others are clearly beyond the scope of responsibilities of the extension service.
Finally, the study recommended that: efforts be made
to refine agricultural innovations; every extension worker
should attend, on regular basis, refresher courses and
other professional programmes; and there is need to
implement the national agricultural policy (1983) on
transport for extension workers.
Business start-up intentions among technical graduates in Tanzania: The moderating effect of entrepreneurship education.
(East Africa Journal of Social and Applied Sciences (EAJ-SAS), 2022-12-30) Nzilano K,L.; Ndyetabula D, W.; Tundui H, P.
This paper examines the influence of entrepreneurship education on technical graduates’
business start-up intentions. Specifically, it assesses the antecedents of business start-up
intentions and how entrepreneurship education moderates the effect of attitudes towards
business start-ups, societal-subjective norms, and perceived behavioural control on business
start-up intentions. Data for this study were collected from 391 technical graduates who
graduated between 2012 and 2017 from technical colleges and universities who lived in Dar
es Salaam during data collection. The collected data were analysed using descriptive
statistics and Partial Least Squares Path Modelling (PLS-PM). The findings indicate that
perceived behavioural control (52.1%) was the strongest predictor of business start-up
intentions, followed by attitude towards business start-up (28.9%), and societal-subjective
norms (11.5%). Moreover, entrepreneurship education moderated the effect of attitudes
towards business start-ups and perceived behaviour on business start-up intentions but not
subjective norms. Only 30.2% of technical graduates’ intentions translated into actual
business start-ups. Limited start-up funds, perceived high taxes, unfriendly regulatory
frameworks, and little awareness of business support services constrained the potential of
graduates’ intentions to translate into actual business start-ups. Alongside government
efforts to improve the business start-up ecosystem, technical colleges and universities should
align entrepreneurship courses with experiential pedagogies to enhance the attitudes of
students towards business start-ups and perceived behavioural control as critical
antecedents for business start-ups upon graduation.
Screening of groundnut (Arachis hypogea L.) genotypes for yield performance in three agro-ecological zones of Tanzania
(East African Journal of Science, Technology and Innovation, 2026-01-15) BUJIKU, A. M.; CHILAGANE, L. A.; MAKURU, H. D.; THOMAS, P. S.; 1 TRYPHONE, G. M.
Groundnut is one of the most important oilseed crops and the most important food crop in the world. It is
one of the four economically important oilseeds grown in Tanzania. Groundnut is normally produced by
small-scale farmers, particularly women, as leverage crop for both food and cash crops in all Tanzanian
agricultural and ecological zones. However, its production is constrained by several biotic and abiotic
factors. The presence of environmental effects on the genotype performance (G*E) is one of the major
constraints of production. This study sought to evaluate and identify widely adapted and high-yielding
genotypes in three agro-ecological zones of Tanzania. A total of sixteen selected groundnut genotypes
were evaluated under RCBD with three replications. Data on morphological traits, yield and yield
components were collected and analysed. Results revealed the differential performance of the tested
genotypes (p < 0.001). Three genotypes ICGIL 17113, NALX-22-18 and ICGV-SM 16528 have shown
consistence performance across test environments that guaranteed the existence of potential to revert and
combat both nutritional and better yield. The highest average yield was observed in genotype ICGV-SM
16528 having 1582 kg/ha while the lowest average yield was observed in genotype ICGV- SM 05534
having 733.05 kg/ha. Among the three genotypes, genotype ICGV-SM 16528 has shown consistent good
performance across environments. As an oilseed crop, the nation may utilize those opportunities to solve
the problem of the cooking oil insufficiency and nutritional issues of our communities since groundnut
has important nutrients required for normal human health. Evaluated genotypes along with existing ones
should be integrated in groundnut farming systems to enhance the production efficiency and the
livelihoods of farming community. The breeders will use these findings to explore more genetic base of
groundnuts for further improvement.
Agribusiness development and the role of value chain business associations
(AJEMS, 2014-11-16) Ndyetabula, Daniel Wilson.; Sørensen, Olav Jull.; Temu, Anna A.
Purpose – The purpose of this paper is to explore the rationale for value chain business associations
and construct a conceptual framework for establishing and managing a value chain association, using
the value chain for dried fruits and vegetables in Tanzania as the empirical basis.
Design/methodology/approach – To achieve the objectives of the paper, a conventional approach
involving literature review, framework development, and data collection and analysis was used to
conceptualise the organisation of a value chain association in a developing country context.
Findings – The study finds rationale for a value chain-based business association based on the
literature review, observations and discussions from the stakeholder workshop.
Research limitations/implications – It has been suggested that upgrading the currently fragmented
dried fruit and vegetable value chain to encompass all value chain actors might have implications towards
“creativity”, “innovation” and “entrepreneurial abilities” along the value chain, i.e. resources and
competences that could enhance the value of the market offer and thus the competitiveness of the whole
value chain. A value chain-based business association might be one of the stepping-stones to enhance
innovative and entrepreneurial abilities for strong and competitive value chain activities.
Originality/value – If the literature has been relatively silent on business associations understood
primarily as industry associations, it has been completely silent on value chain associations.
This paper therefore makes explicit contribution on the conceptualization of value chain association
with a particular focus on the developing country setting.