Article Type: Research Article Article Citation: Leticia J. Musese,
Samora A. Macrice, Deo D.
Shirima, Arne Witt, and Ramadhan Kilewa. (2020). PASTORALISTS’
PERCEPTIONS ON AN INVASIVE ALIEN PLANT PARTHENIUM HYSTEROPHORUS AND ITS MANAGEMENT
CONTROL IN SIMANJIRO DISTRICT, TANZANIA. International Journal of Research
-GRANTHAALAYAH, 8(8), 181-189. https://doi.org/10.29121/granthaalayah.v8.i8.2020.816 Received Date: 20 July 2020 Accepted Date: 28 August 2020 Keywords: Non-Native Plants Parthenium Weed Rangeland Unpalatable Species The Maasai pastoralist community resides in Simanjiro District, Manyara Region, Tanzania. As a pastoralist community they are largely dependent on rangelands as a source of forage for their livestock. However, plant invasions are threatening rangeland productivity, displacing valuable forage species, leading to a reduction in livestock populations. The noxious weed Parthenium hysterophorus has recently been established in Simanjiro District and may pose a significant threat to livelihoods if effective control strategies are not put in place. This study was therefore conducted to determine pastoralists’ understanding of P. hysterophorus in Simanjiro District, Tanzania. Semi-structured and open-ended questionnaires were used to collect information on, among others, the date of introduction, means of spread, area coverage, effects of P. hysterophorus on livestock health and management control for P. hysterophorus. Pastoralists were unaware of when P. hysterophorus was introduced although they mentioned vehicles, people and livestock to be the main vectors of introduction and spread. They confirmed that P. hysterophorus has little/some expanding its range since it was first noticed at the beginning of this decade. Furthermore, most pastoralists were not aware of the effects of Parthenium weed in livestock although few reported it causing distasteful and less milk and diarrhoea after consuming the weed. There were no major efforts in place to control Parthenium weed. Therefore, efforts need to be made to motivate pastoralists through community awareness campaigns to impart knowledge on how to control P. hysterophorus to promote rangeland productivity. Also, community awareness the impacts of the weed on their livestock and human health.
1. INTRODUCTIONParthenium hysterophorus L. (Asteraceae) is considered to be one of the
world’s worst invasive plant species (Binu et al., 2010). The weed originated from
the Gulf of Mexico (McConnachie et al., 2011) and accidentally introduced to Asia, Australia and
Africa where it has created a significant threat to biodiversity and livestock
health (Adkins and Navie, 2006). Its
ability to adopt and grow under wide
climatic condition, soil conditions, production of large number of seeds (about
10,000 to 25,000 seeds per plant) and allelopathic chemicals makes it a
successful invader (Kifle et al., 2011). Parthenium weed has been recorded as having a negative
effect on grazing land in Ethiopia (Dhileepan, 2009;
Brunel et al., 2004), Central
Queensland and New South Wales in Australia (Huy and Seghal 2004); South Africa, Swaziland, Mozambique Zimbabwe,
Madagascar, Kenya (McConnachie et al.,2011) and Uganda. Clark and Lotter (2011) reported its presence
in Tanzania but yet there is no information of its impact in rangelands. Parthenium weed
is toxic to animals causing dermatitis on various animals including horses and
cattle (Kaur et al., 2014). Moreover,
P. hysterophorus has
irritating odour, bad taste and hence not preferred by cattle although cattle
are habitually forced to feed on it during fodder scarcity (Kumar, 2014). Majority of people living in semi-arid areas of
Tanzania are pastoralists (Yanda and William, 2010). Simanjiro District is one of the semi-arid part of Tanzania
occupied by the Maasai pastoralist community (Steven and Rob, 2002).These
pastoralists community depends on the rangelands for their natural capital such as meat and milk, source
of financial (cash) and social capital (wealth, prestige, identity, respect,
friendship, and marriage dowry, festivity) (Yanda and
Williams, 2010). Not only Tanzanian pastoralists but also about 70% of
pastoralists in the world depend on rangelands for fodder for their livestock (Sangeda and Malole, 2014). Pastoral communities have elaborate knowledge of
grazing animals and changes in vegetation (Oba and Kaitira,
2006). This knowledge has significant influence on the management strategies of
a particular ecosystem for different stakeholders (Kgosikoma
et al., 2012). Therefore, it is
essential to understand how pastoralists perceive P. hysterophorus, and its effect on
livestock health and productivity. A better understanding of the environment
among both researchers and pastoralists is crucial for sustainable development
and environmental conservation (Kessler and Stroosnijder,
2010). The objectives
of this study were to determine through questionnaires the i)
date of introduction and means of spread of P.
hysterophorus, ii) distribution of P. hysterophorus on
the rangelands, iii) identify effects of P.
hysterophorus on livestock health and
productivity, and iv) determine control strategies for P. hysterophorus. 2. MATERIALS AND METHODS2.1. STUDY AREAThe study
was conducted in Simanjiro District, Manyara Region, northern Tanzania (Figure 1). Simanjiro District (30 53’ 9’’to 30
52’ 0.01’’S and 36036’32’’E to; 360 36’ 0 .00’’E) is a
semi-arid area adjacent to the Tarangire National
Park (TNP). The area is is characterized by bimodal
rainfall, with the main rains from January to March and short rains from
September to December (Nyaruhucha et al.,
2006). The area comprises predominantly Maasai communities
where livestock husbandry is their major activity to support their livelihood
with a human population of 178,693 according to the National Census of 2012. Figure 3.1: Map of the Simanjiro
District in Tanzania showing surveyed areas in relation to P. hysterophorus
established plots. 2.2. RESEARCH DESIGN AND SAMPLING PROCEDUREThe target
respondents for the study were pastoralists who graze their livestock in P. hysterophorus
infested areas. Respondents were selected through a multi-stage research
sampling procedure whereby the first stage involved the selection of the study
area, namely Simanjiro District in Manyara Region. The district was selected because of the
presence of P. hysterophorus
within the rangelands and about 90% of the residents are pastoralists who graze
their livestock in an infested rangeland. In stage two, three sites namely Terat, Loiborsiret and Emboreet (Figure 3.1) were purposefully selected on the
basis that, pastoralists graze their livestock in the rangeland where P. hysterophorus occurred
and plots for vegetation data were established (Figure 3.1). A sampling frame
for this study was obtained from village registers. A sampling frame is a list
that classifies a target respondents/population. A cross-sectional research design was
employed whereby data were collected once from selected respondents (Kothari,2004).
A total of 120 pastoralists, counting 40 per each site (Terat,
Loiborsiret and Emboreet)
were selected randomly from the village registers. Basing on literature
(Kayunze,1998) 30 respondents are recommended for social survey and in this
study a higher number (40 respondents per each site) was adopted. Structured
questionnaires were prepared to collect adequate information regarding the
perception of pastoralists on the effect of P.
hysterophorus (Appendix 2). The respondents were household head and
first household member who formed part of the sampling units. This was to
ensure that different gender perspectives were considered. However, in cases
where only one member was found in a household, a single respondent was
interviewed. Table 3.1:
Number of respondents in surveyed villages
3. DATA COLLECTIONIn this study both primary and secondary data were used. The data have both quantitative and qualitative nature. 4. PRIMARY DATAPrimary
data were collected using structured questionnaires that included both open and
closed-ended questions. In order to achieve effective communication from the
selected pastoralists, prepared questionnaires were pretested. Feedback and comments
from the survey were instrumental in improving the efficiency of the data
collection tools (questionnaire). In order to collect reliable data, the questions were
translated into Swahili language and for those who were not able to understand
the Swahili language, questions were translated into Maasai language for easy
understanding by the respondents.The questionnaires inquired about pastoralist’s perceptions on the
invasive weed knowledge, effect of P. hysterophorus on livestock and management options for
it. Specifically, the questionnaire included questions about; the general
issues affecting their livestock, problematic weeds in their grazing land
(rangeland), introduction of P. hysterophorus, means of spread of P. hysterophorus, area covered by P. hysterophorus
in their grazing land, feeding preferences of the livestock on P. hysterophorus
and its effect in milk production as well as control of P. hysterophorus. 5. SECONDARY DATASecondary data
were obtained through reviewing available information collected from different literature sources
such as online journals, articles, published documents and Sokoine National
Agriculture Library (SNAL). 6. Data Analysis
The objective
of data analysis is to summarize collected data and make them useful for informed
decision making. A quantitative analysis method was used in this study. 7.
DESCRIPTIVE
STATISTICAL ANALYSIS FOR QUANTITATIVE AND QUALITATIVE DATA RESPECTIVELY
The primary
data from questionnaire were coded and entered in a Statistical Package for Social
Sciences (SPSS) computer program version 16.0. The output tables were exported
to excel spread sheet from where descriptive statistics (frequencies,
percentages, and measures of central tendencies) were derived. Results were
then presented in form of frequency tables for easy interpretation. The qualitative information obtained from the
interviews and direct observations were however transcribed through content
analysis. 8. RESULTS8.1. SOCIOECONOMIC CHARACTERISTIC OF RESPONDENTSThe study involved both male (52%) and female (48%) with an average age
between 29 and 39. During survey it was also observed that 75% of the
pastoralists had no formal education while 25% had only primary education
level. Main source of pastoralists income depended on direct selling of
livestock (64%), selling of meat and milk (21%) and small businesses (15%). 8.2. GENERAL ISSUES AFFECTING LIVESTOCK AND PROBLEMATIC WEEDS IN RANGELANDAmong the
issues reported by the pastoralists affecting their livestock were insufficient
grazing land, weeds and poisonous plants (such as Parthenium hysterophorus, Ipomoea hildebrandtii) and somehow stock theft (Table 3.2).
Furthermore, pastoralists reported problematic weed affecting livestock in
grazing land to be Ipomoea hildebrandtii, Parthenium hysterophorus
and Lantana camara (Table 3.2). Table
3.2: Pastoralists’ response on Issues and
problematic weed affecting their livestock
8.3. INTRODUCTION, MEANS OF SPREAD AND AREA COVERAGE BY P. HYSTEROPHORUS IN RANGELANDPastoralists mentioned not to be aware on the
exact introduction of the weed in their grazing land although some mentioned to
be the year ranging from 2007 to 2107 (Table 3.3). Moreover, interviewed
pastoralists ranked vehicles as the major way of spreading the weed followed by
people and livestock (Table 3.3). They explained that, during road construction
and maintenance Parthenium seeds were
accidentally being transported with construction material. People facilitated
the spread of P. hysterophorus
by unwittingly using it in mattresses as well as growing the plant in their
home gardens. Livestock also spread Parthenium weed as they feed on it and
then defecate in uninvaded areas, spreading the seeds. According to respondents
the area coverage by P.
hysterophorus has increased in the area over the
last five years and is now present on some of their grazing land (Table 3.3). Table 3.3: Response of Pastoralists on the
Introduction, means of spread and area coverage by P. hysterophorus
8.4. FEEDING PREFERENCES OF THE LIVESTOCK ON P. HYSTEROPHORUS, EFFECT ON LIVESTOCK AND CONTROL METHODS OF PARTHENIUM WEEDAccording
to the interviewed pastoralists, feeding preference of cattle on Parthenium hysterophorus
to be the leave part of the weed while goats and sheep feeding preferences was
on both leaves and flowers (Table 3.4). Although some pastoralists noted the
feeding preferences of their livestock on Parthenium
weed but some didn’t know the preferences (Table 3.4). Moreover, pastoralists
reported not to be aware on the changes occurring to their livestock as a
result of feeding on Parthenium weed
although some reported changes on their livestock when they feed on Parthenium weed (Table 3.4). The changes
included production of less and distasteful milk and diarrhoea (Table 3.4). Pastoralists
reported that, nothing has been done in order to control further spread of Parthenium weed in their grazing land
but they normally plough the weed when it occurs in their croplands and around
their houses (Table 3.4). Table
3.4: Livestock’s feeding preferences, effect
and control methods on P. hysterophorus
9. DISCUSSIONAbout 81%
of the interviewed pastoralists didn’t know introduction time of P. hysterophorus in their land in contrast with Clark
and Lotter (2011) who reported the introduction of P. hysterophorus to
be 2010s years. However, about 19% of the interviewed pastoralists reported the
introduction of P. hysterophorus to be around 2007 to 2017 years which
supports the report by Clark and Lotter (2011).
Pastoralists
(45%) claimed that vehicles were mainly responsible for the spread of P. hysterophorus,
especially during road construction and maintenance. They further explained
that, during road construction and maintenance P. hysterophorus seeds
was probably unintentionally carried together with sand from areas where it has
infested to new areas. Lakshmi and Srinivas (2007) found P. hysterophorus along
roadsides in India, this supports the pastoralists’ view that P. hysterophorus
seeds can be moved together with sand during road construction or maintenance.
Furthermore, Hundessa and Belachew (2016) reported that vehicles are important vectors for the movement of P. hysterophorus. Also, some of the pastoralists (15%)
mentioned livestock as one of the dispersal agencies for P. hysterophorus. Seeds of many weed species are
consumed by livestock and spread when deposited in non- infested areas.
Therefore, livestock support the spread of P. hysterophorus when
seeds pass out of the gastro tract though dungs. Additionally, livestock can
spread P. hysterophorus unintentionally when seeds attach on
their coats and hooves. Navie et al. (2004) reported unintentionally spread of P. hysterophorus when the seed get attached on animals’
coats and hooves. Moreover, pastoralists (18%) mentioned people as the means of
spread of P. hysterophorus as some people unknowingly has been
using P. hysterophorus
as flower for their home garden. It was also
stated by the pastoralists (46%) that the area coverage by P. hysterophorus has
little/some increased to the detriment of other plant species. Also, about 18%
of the interviewed pastoralists reported a moderate increase while 33% reported
that area coverage by P. hysterophorus has not increased. All these might be due
to time factor since its introduction or environmental factors has not yet
favoured the weed. Although the weed might increase its coverage as time goes
due to factors like; ability of the weed to adapt a wide range of climatic
condition, ability to produce toxic chemicals which inhibit the growth and
germination of other species (Mulatu et al., 2009: Kapoor, 2014). Together
with these factors P. hysterophorus
has also an ability to produce
large quantities of light seeds that are easily dispersed by wind, vehicles, livestock,
flooding, food grain and fodder (Araya et
al., 2015). Furthermore, P. hysterophorus
has short life cycle (Fatimah and Ahmad, 2009; Knox et al., 2010). Therefore, it is expected with time, P. hysterophorus will have been
established itself in a large area. Interviewed
pastoralists (58%) had not seen any changes in their livestock as a result of P. hysterophorus;
this might be due to the fact that the weed has not yet established itself in a
large area or pastoralists are not aware of it. Nevertheless, other
pastoralists (21%, 13% and 8%) has observed production of distasteful milk,
less milk and diarrhoea respectively. This observation is supported by Beyene and Taye (2015); Hundessa
and Belachew (2016), that consumption of P. hysterophorus results in the
production of less and distasteful milk. There is no major control of P. hysterophorus (87%) in
rangelands rather than ploughing (10%) when it has occurred near around homes
and cropland. Although those who did ploughing around homes and in croplands
claimed that it is ineffective and time consuming and can’t be used in large
area. This agrees with
Patel (2011) who reported that physical methods such as ploughing have proved
ineffective, expensive and time consuming. Also, Khan et al. (2013) reported that manual and
mechanical control methods give temporary solutions in the control of P. hysterophorus. Roy and Shaik (2013) suggested that
physical, chemical and biological control should be integrated in controlling P. hysterophorus as
it is a fast spreading plant. EPPO (2014) mentioned biological control as a
cost-effective control of P. hysterophorus
whereas Mekonnen (2017) reported a leaf
feeding beetle Zygograma bicolorata as
being a successful bio-control. 10. CONCLUSIONSGenerally, pastoralists had less information about P. hysterophorus regarding its introduction, means of spread, area coverage, effect on livestock as well as its control methods. Therefore, there is a need of conducting an awareness campaign about the weed as pastoralists depends directly on rangeland for livestock production which is the main source of their income. This awareness campaign should also go hand in hand with measures on preventing further spread and effect of the weed in rangeland and country at large. Furthermore, coordination among communities, scientists, governments and non-government organizations should be improved to facilitate the development and implementation of an integrated and sustainable management strategy for the control of P. hysterophorus. SOURCES OF FUNDINGThis research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors. CONFLICT OF INTERESTThe author have declared that no competing interests exist. ACKNOWLEDGMENTThe authors gratefully
acknowledge the support that was provided by the Unites State Agency for
International Development (USAID) through the Centre for Agriculture and
Bioscience International (CABI), Nairobi Kenya. We appreciate Tropical
pesticides Research Institute (TPRI), Arusha-Tanzania for rendering the
materials and human resources that were required to undertake this research. REFERENCES
[1]
Adkins,
S. W. and Navie, S. C. (2006). Parthenium weed: a
potential major weed for agro-ecosystems in Pakistan.
Weed Science Research 1: 19-36.
[2]
Araya,
H. Haile, M., Asmelash, A., Edwards, S. and Egziabher, T.B.G. (2015). Overcoming the Challenge of
Parthenium hysterophorus through Composting. Journal
of Agricultural Science and Food Technology 1 (6): 72-77.
[3]
Beyene, H. and
Taye, T. (2015). Distribution, Abundance and Socio-Economic Impacts of
Parthenium (Parthenium hysterophorus) in Southern
Zone of Tigray, Ethiopia. Journal of Poverty, Investment and Development 19:
22-29.
[4]
Binu, T., Bharat,
B., Maan, B. and Zuzana, M. (2010). Impact of
Parthenium hysterophorus L. invasion on plant species
composition and soil properties of grassland communities in Nepal 233-240.
[5]
Brunel,
S., Panetta, D., Fried, G., Kriticos, D., Prasad, R.
and Lansink, A.O. (2014). Preventing a new invasive
alien plant from entering and spreading in the Euro-Mediterranean region: the
case study of Parthenium hysterophorus. European and
Mediterranean Plant Protection Organization journal 44(3): 1–11.
[6]
Clark, K
and Lotter, W. (2011). International Parthenium news. 1-11pp.
[7]
Dhileepan, K.
(2009). Managing Parthenium weed across diverse landscapes: prospects and
limitations. Management of Invasive weeds 5: 227-259.
[8]
European
and Mediterranean Plant Protection Organization. (2014). Parthenium hysterophorus L. Asteraceae – Parthenium weed.44 (3):
474–478.
[9]
Fatimah,
H. and Ahmad, T. (2009). Phenology of Parthenium hysterophorus–
a key factor for the success of its invasion. Advances in Environmental Biology
3(2): 150–156.
[10] Hundessa, N. and Belachew,
K. (2016). Socio-economic impacts of Parthenium hysterophorus
l. in East Shewa and West Arsi zones of Ethiopia.
International Journal of Agricultural Research Innovation and Technology 6 (2):
5-11.
[11] Huy, L.Q. and Seghal,
R.N. (2004). Invasion of Parthenium hysterophorus in Chire-Pine Forests and Its allelopathic effects. Abstracts
of an Introduction Workshop on protocols and Methodologies in Allelopathy,
April 2-4, 2004 in Palampur (HP) India. CSK HP Agriculture University Palampur
(HP) India: p. 52.
[12] Kapoor, R.T. (2012). Awareness related survey
of an invasive alien weed, Parthenium hysterophorus
L. in Gautam Budh Nagar district, Uttar Pradesh,
India. Journal of Agricultural Technology 8(3): 1129-1140.
[13] Kaur, M., Kumar, N., Vikas, K. and Dhiman, R.
(2014). Effects and Management of Parthenium hysterophorus:
A Weed of Global Significance. International Scholarly Research Notices 12pp.
[14] Kayunze, K.A. (1998). Comparative contribution of
non- farm and farm enterprises to rural poverty alleviation in Mbeya Region,
Tanzania: A case study of Ileje and Rungwe Districts. Unpublished M.A Dissertation, Sokoine
University of Agriculture, Morogoro, Tanzania, pp. 10 - 145.
[15] Kessler, A. and Stroosnijder,
S. (2010). Debating land degradation: strategy development for Bolivian
mountain valleys. Journal of Land degradation and development 21:480-483.
[16] Kgosikoma, O., Mojaremane,
W. and Harvie, B.A. (2012). Pastoralists’ perception and ecological knowledge
on savannah ecosystem dynamics in semi-arid Botswana. Journal of Ecology and
Society 17 (4):27.
[17] Khan, H., Marwat,
B. K., Hassan, G. and Muhammad, A.K. (2013). Socio-economic impacts of
Parthenium (Parthenium hysterophorus L.) in Peshawar
valley, Pakistan. Pakistan Journal of Weed Science Research 19 (3): 275-293.
[18] Kifle, B., Taye, T. and Erine,
W. (2011). Competitiveness of Parthenium hysterophorus
with other plant species. Ethiopian Journal of Weed Management 4(1): 15-24.
[19] Knox, J., Jaggi, D.
and Paul, M.S. (2010). Allelopathic effect of selected weeds on biochemical
activity of Parthenium hysterophorus. Journal of
Biological Sciences 2(4): 238 - 240.
[20] Kothari, C. R. (2004). Research Methodology:
Methods and Techniques. (2nd Ed.), New Age International Publisher Limited, New
Delhi, India. 401pp.
[21] Kumar, A. (2014). Parthenium hysterophorus L. and its impact on living world. Indian
Journal of Science Research 4 (1): 08-14.
[22] Lakshmi, C. and Srinivas, C.R. (2007).
Parthenium: a wide-angle view. Indian Journal of Dermatology, Venerology and
Leprology 73: 296-306.
[23] McConnachie, A.J., Strathie,
L.W., Mersie, W., Gebrehiwot,
L., Zewdie, K. and Abdurehim, A. (2011). Current and
potential geographical distribution of the invasive plant Parthenium hysterophorus (Asteraceae) in eastern and southern Africa.
Weed Research Journal 51 (1): 71-84.
[24] Mulatu, W., Gezahegn, B.,
Solomon, T. (2009). Allelopathic effects of an invasive alien weed Parthenium hysterophorus L. compost on lettuce germination and growth.
African Journal of Agricultural Research 4(11): 1325 - 1330.
[25] Navie, S.C., Puntta.
F.D., McFadyen, R.E. and Adkins, S.W. (2004). Germinable
soil seed banks of Central Queensland rangelands invaded by the exotic weed
Parthenium hysterophorus. Seed Biology and Management,
4: 154-167.
[26] Nyaruhucha, C.N.M., Musya,
J.M., Mamiro, P.S. and Kerengi,
A.J. (2006). Nutritional status and feeding practices of under five children in
Simanjiro District, Tanzania. Tanzania Health
Research Bulletin 8, 162-167.
[27] Oba, G. and Kaitira,
L.M. (2006). Herder knowledge of landscape assessments in arid rangelands in
northern Tanzania. Journal of Arid Environments 66: 168-186.
[28] Patel, S. (2011). Harmful and beneficial
aspects of Parthenium hysterophorus. Journal of
Biotechnology 3(1): 1-9.
[29] Roy, C. D. and Shaik, M. M. (2013). Toxiology, Phytochemistry, Bioactive compounds and
Pharmacology of Parthenium hysterophorus. Journal of
Medicinal Plant Studies 1 (3): 126-141.
[30] Sangeda, A. Z. and Malole
J. L. (2014) Tanzanian rangelands in a changing climate: Impacts, adaptations
and mitigation. Journal of Agricultural Science 2(1): 1-10.
[31] Steven, N. and Rob, A. (2002). A
participatory approach to assessing the impact of a community-based animal
health project with Maasai communities in Tanzania. 4: 17-45.
[32] Yanda, P.Z. and William, C. (2010) Livelihoods
diversifications and implications on food security and poverty levels in the
Maasai plains: The case of Simanjiro district,
Northern Tanzania. African Journal of Environmental Science and Technology4(3):
154-166.
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