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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.
Communities in SUAIRE
Select a community to browse its collections.
- 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.
Recent Submissions
The entrepreneurship potential of rural areas: soap production as a side business for Tanzanian rice farmers
(Arca Academic Publisher, 2022) Tsuchiya, Y.; Swai, T.A.; Takahashi, K.; Wakamatsu, T.; Watari, R.; Nsenga, J.V.
Purpose: This study examines soap production’s entrepreneurship potential and profitability
as a supplementary business for rural rice farmers in Tanzania to promote their economic
independence.
Design/ Methodology/ Approach: We randomly sampled and interviewed about ten small-
scale soap manufacturers in urban Tanzania gathered from 2019-2021 to develop a soap
production business strategy for rural farmers at a similar scale. Considering the Voronoi theory,
we calculated the distance from the rural areas to urban centres to determine the transportation
costs, which particularly burden rural farmers. Soap production costs and profitability were
determined based on transportation costs and raw material prices.
Findings: Rural farmers would incur high transportation costs, given the high average distance
to the nearest urban centre (sometimes > 100 km). Nevertheless, producing their rice bran oil,
valuable raw material for soap production, would give them a competitive advantage over
urban producers.
Research Limitation: The study’s proposed strategy can be applied to similar contexts to
reduce the urban-rural entrepreneurship divide.
Practical Implication: Soaps made using rice bran oil help farmers reuse agricultural waste.
Their active ingredients also increase their marketability as high-end cosmetic products,
providing farmers with additional income.
Social Implication: Commercializing agricultural residues such as rice bran increases farmers’
revenues and reduces CO2 emissions by preventing the residues’ incineration; this creates a
virtuous cycle in society.
Originality/ Value: This study presents a more realistic business strategy for rural Tanzanian
farmers, as, unlike previous studies, it considers not only direct costs but also transportation
costs.
Studies on functional properties and X- ray crystallographic analysis of soybean proglycinins modified by protein engineering
(Sookoine University of Agracuture, 1994) Amis, Andrew Barde Gid
The
present
world
situation
food
imbalance between food
proportion of population
the
and
shortage
characterized
is
surplus.
develop
health
the developing countries are
in
eat excessively
related
problems
large
While
in the
than not
either starving or are suffering from malnutrition, many
developed countries
by an
and
often
more
over-eating (1, 2).
to
This
situation demands adequate and stable food production as well
balance distribution
as
world population for the maintenance
among
and promotion of human health.
While the importance of adequate supply
foods
main
food
be over emphasised, protein shortage has been
cannot
malnutrition
cause of
apart
proteins,
affordable and
from
sensory qualities as well as
based foods are generally
expensive
religious and cultural reasons. Moreover,
or are not consumed for
excessive
of animal based foods has been related to some
On
the
contrary,
and cheap, although
should be safe,
being nutritional,
Animal protein
delicious, but are scarce and
abudant
the
world wide. The proteins we consume
acceptable
possess
functional properties.
(2, 3).
in
derived from both animal and plant sources. Ideally,
mainly
are
nutrients
of all
plant
protein
consumption
dietary disorders
based
are usually inferior
foods
are
to those from
animal sources in terms of nutritional value (4) and organoleptic
However, consumption
qualities.
proteins
may
of adequate and balance
plant
help alleviate most of the health problems related
to dietary intake.
Of
the
plant protein
sources, soybeans are perhaps the most
12widely
70%
in
used
the
of
human foods.
Investigation of irrigation system design and operational related factors contributing to low sugarcane production at Kilombero Sugar Estates
(Sokoine Uninversity of Agriculture, 1997) Rajabu, Kossa Ruzebelle Mnyimvua
A study was
investigate
conducted
irrigation
at
Kilombero
Sugar
design
system
and
Company
to
operational
related factors contributing to low sugarcane production
at Msolwa estate.
Climatic,
plant
calculation
and
soil
seasonal
of
factors
and
were
monthly
for the
water and
used
crop
irrigation requirements for different categories of cane
planted in different dates and months and results compared
the
with the actual performance of
irrigation
system.
Further evaluations of system performance were carried out
using
catch-can
test
data;
number
irrigation and drainage structures
of
operational
and equipments;
and
drainage activities.
Sugarcane yield/water use relationship was investigated by
comparison of climatic potential yields calculated using
Thompson's
obtained
(1976)
from
production function and actual yields
different
fields.
Irrigation
Scheduling
Information System (IRSIS) computer program was then used
to evaluate irrigation actions of the past period using
daily rainfall and decade ETo data. The results showed that the average seasonal irrigation
requirement is 28% of the crop water requirement. However
the irrigation system is only capable of supplying 27% of
the irrigation requirement due to poor maintenance of the
non-replacement of worn out parts,
system,
old age of
irrigation equipments and irrigating during day time only.
System performance
evaluation
results
showed
that
the
sprinkler nozzle operating pressure was very low ranging
from
1.8
compared
bar to
the
to
3.2
bar with a mean of
designed
pressure
of
2.57
3.5
bar
as
This
bar.
resulted into low values of CU, DU, and PELQ of 72, 59.7
and
55.5%
significantly from
significance . Water
season are
These
respectively.
designed
figures
values
logging problems
indicative of
at
1%
during
differed
level
the
of
rainy
a high degree of neglect
of
drainage activities over a large area of the estate.
The actual average seasonal sugarcane yield of 82 tonnes
cane
per
hectare
differed
significantly
from
the
calculated average climatic potential yield of the area of
116.1 tonnes cane per hectare. Regression analysis of the
actual
yield
data
with
ETcrop
gave
a
correlation
coefficient of 0.4 showing that there is almost no linear correlation between
the
actual
Msolwa
yields
the
and
amount of water transpired. The reason for this could be
the
failure
of
the
irrigation
system
to
fully
meet
moisture requirements of sugarcane.
Evaluation of 1993/94 irrigation schedules showed that the
average
depths
irrigation
were
less
than
the
average
irrigation requirements resulting in low ETa values which,
at 5% level of significance differed significantly from
ETcrop. This was due to under-irrigation of the evaluated
fields.
From the study it can be concluded that the current level
of sugarcane production at Msolwa estate is very low and
does not match with the climatic potential of the area.
This could have been caused by,
among other factors,
an
ineffective irrigation system which failed to supply the
required
amount
maintenance
and
recommendations.
water due
failure to
of
to
poor
follow
operation
system
and
desig,
Position of women in fruits and vegetables value chain: a case study of Chalinze and Kiwangwa wards in Coast Region of Tanzania
(Sokoine University of Agriculture, 2012) Swamila,Martha
Using the baseline survey data, this study was set out to establish the baseline position of
women in fruits and vegetables value chain at Chalinze and Kiwangwa wards in the coast
region of Tanzania. By intergrating gender (taking men into an account), the study
specifically aimed at identifying activities done by women and men in fruits and vegetables
value chain, determining the profit margin accrued by women and men in fruits and
vegetables value chain and identifying socio economic factors influencing women and men
position in fruits and vegetables value chain. The study results are expected to expand the
knowledge of policy makers and development practitioners on the position of women in
fruits and vegetables value chain in the specified research areas which consequently will
lead them to make the informed decisions regarding women empowerment in FVV.
Purposive sampling was used to select wards and villages basing on the concentration of
women economic groups involved in fruits and vegetables value chain and simple random
sampling was used to select households and 239 respondents for the interview. SPSS and
STATA softwares were used to analyse data. The study found that, land preparation,
planting/sowing, weeding, fertilizer application and harvesting were done by both women
and men. However women were less participating in transporting fruits and vegetables
produce to the market places for trading. Value adding activities were not highly practiced
in the study areas. With the exception of amaranthus, the gross margins accrued by female
respondents in pineapples, banana and mangoes were relatively lower than those accrued
by male respondents. Education level and membership in farmers’ associations were found
to influence both women and men position in FVV while position in the household was
found to influence women position and access to market information was found to
influence men position in FVV. The study recommends the provision of education, training
on agricultural and business skills, strengthening of farmers’ associations and promotion of women members in farmers’ associations in order to improve their positions in fruits and
vegetables value chain.
Studies on influence of sowing time of beans (phaseolus vulgaris) on level of infestation and parasitism of the bean stem maggot
(Sokoine University of Agriculture, 2003) John Eias Sariah
The influence of time of sowing of beans, Phaseolus vulgaris, on level of
infestation and parasitism of the bean stem maggot (BSM) (Ophiomyia spp) was
studied during off-season cropping of beans at Madira farm, Tengeru. Two bean
varieties, Lyamungu 90 and ZPV 292, which are susceptible and tolerant to
BSM, respectively, were sown in the field. Three sowing dates were adopted;
early, normal calendar and late sowing in a split-plot design. The abundance of
BSM pupae in bean stems and the number of cracked stems due to infestation
were established. Ophiomyia spencerella were the dominant bean fly maggots
infesting the crop. Sowing dates had significant (p
0.001) influence on BSM
infestation. Early sown beans experienced low BSM infestation. The bean
variety ZPV 292, was relatively less infested. Braconids were the dominant
parasitoids and the relationship to the host population was density dependent.
Parasitism reduced emergence of BSM by about 68%. Variety and sowing time
(factor) interaction had no significant (p > 0.05) influence on BSM infestation
and natural enemies parasitism. The study shows that timely sowing of beans
enable the crop to escape peak population of BSM at the most vulnerable plant
growth stage. The study further shows that natural parasitism by Braconids play
an important role in maintaining a low population of BSM.