Investment Opportunities in Sisal for Tanzania

Total Page:16

File Type:pdf, Size:1020Kb

Investment Opportunities in Sisal for Tanzania Investment Opportunities in Sisal for Tanzania OCTOBER 2019 Sisal is a highly versatile product, with its use determined by the form of processing Input Semi-processed products Outputs Carpets High quality fiber Yarn Low quality fiber Artisanal goods Non-fiber products Fiber Ropes and twines Cordage Baler & binder twines Gunny bags 2% of plant Paper goods, e.g. boxes, paper, Pulp tea bags and filters Juice Construction composites Roving Automotive parts Sisal plant Alcohol c.25% of plant Sugars/Syrup Waste Biogas/Biomass 70% of plant Fertilizer Source: Dalberg stakeholder interviews; World of Sisal, “Sisal products,” 2018; Key Color, “The Many Uses of Sisal,” 2017; FAO, “Future 2 Fibers,” 2019 High-quality sisal fiber products have a larger market value than low-quality products Global market size of sisal products (2017) Details High-quality fiber Low-quality fiber M USD Fiber 3L: white c. 100 cm SSUG: brown 80-100 1,754 grades fiber, with 8% - 10% of cm long fiber, with 30% 34 16 fiber production share share 138 UG: white 80-100 cm 3DB: Brazilian double long fiber, with 50% brushed sisal 466 share Tow 1: short white fibers Tow 2: short colored fibers Price: 1,728 to 1,929 400 to 1,563 264 (USD/ton) 1,100 34 1 Processing Water-based large- Manual raspadora 80 format scale processing processing 149 Market use Carpets, construction Twines, ropes and yarns, materials, baler and artisanal goods, High-quality Low-quality binder twines agricultural sacks Countries Tanzania, Kenya, Tanzania, Brazil Pulp goods Artisanal goods Madagascar Wire rope Gunny bags Substitutes Natural fibers: wool, Natural fibers: jute, Carpets Baler and binder twine cotton cotton Polishing cloth Ropes, yarns and twines Synthetics: nylon Synthetics: nylon, *Construction products polypropylene *Modeled after gypsum board given it was the most mentioned construction product Source: TSB; FAO Committee on Commodity Problems, “Review of the Sisal market Industry,” 2017; OEC-MIT, “Sisal,” Retrieved 3 September 2019; Dalberg stakeholder interviews The demand for sisal fiber is fragmented, and declining due to competitiveness with cheaper substitutes Sisal usage across different products (2000 – 2015) Competitiveness of nylon to sisal MT/year 127,500 129,500 Today sisal ropes are four 124,500 124,000 122,000 4X 6% 5% 118,000 times more expensive than 6% 8% 3% 10% 3% 4% nylon ropes, while bags are 11% 10% 5% 12% 8% 2X twice more expensive 11% 10% 12% 11% 11% 12% 12% 15% 15% 18% 18% Demand for sisal 16% 18% Given the fragmented nature of the sisal 23% industry there is inconsistent data on the 26% 22% 20% 23% 24% demand for sisal. • Stakeholder interviews consistently mention high demand for sisal, with 32% 32% 34% 27% 27% 27% suppliers not able to meet the requests of buyers 2010 2011 2012 2013 2014 2015 • Tanzanian Sisal Board cites a global demand of 500,000 MT per year Dartboard Sisal carpets Construction materials • Sisal can be stored for up to a year in Artisanal goods Polishing cloth Rope, yarns and twines bales, meaning there can be some lag Wire rope Pulp Baler and binder twines in production Source: Committee on Commodity Problems, Intergovernmental Group on Hard fibers, FAO report, 2017; Biodegradable Plastics Market, 4 MarketsandMarkets, 2018; Dalberg stakeholder interviews The sisal market today is in transition as production and usage trends shift • Brazil’s production is declining steeply due to smallholder farmers moving out of the sisal business, following numerous years of drought and low returns Producers • East African production has been volatile due to irregular rains • Tanzanian production is moving away from estate farming, changing a long- established industry norm of buying from large estates • Historically there have been 2-3 main buyers in East Africa who trade sisal with a diverse range of industries, this has limited the ability of producers to create direct linkages with the markets they are serving • Chinese traders, and to a smaller degree Saudi and Nigerian traders, have increased Buyers their direct presence in Tanzania, shifting market dynamics from a consolidated buyer model to a more competitive model • However, this has led to price fluctuations. Farmers that lack contracts with traditional buyers sell to local producers at lower prices. This leads to lower prices in the markets, particularly in periods with high production from small producers • Most sisal industries, already niche markets, have been declining over the past 20 years, with synthetic materials or other natural materials proving themselves to be more cost competitive with similar structural qualities Consumers • As the global move away from plastic becomes more pronounced there is potential for sisal to play a role in new industries, however these have very limited funding, and are highly fragmented Source: Dalberg analysis 5 Sisal production has been in decline over the past 20 years, primarily driven by the Brazilian market Production of Brazil and the Rest of the World (1990 – 2017) Tonnage Brazil Rest of the world 450,000 418,232 444,240 409,771 410,363 405,810 400,000 388,908 365,831 352,208 350,000 320,066 316,419 312,858 300,340 300,000 269,285 250,000 244,077 214,879 200,000 150,000 100,000 50,000 0 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 2017 Global production has seen an overall decrease in the last 20 years with the rise of cheaper substitutes. This is most pronounced with Brazilian low-quality sisal, which can readily be substituted compared to high-quality fiber from most producers Source: FAOSTAT, “Sisal,” Retrieved October 2019 6 The price of fiber has increased faster than the decline in supply - suggesting the development of a niche market Production of Brazil and the Rest of the World, with price based on fiber quality* (2004 – 2017) Tonnage, USD/T 450,000 2,200 2,050 2,000 400,000 1,850 1,700 1,800 350,000 1,580 1,600 1,450 300,000 1,320 1,320 1,290 1,325 1,400 1,200 1,200 250,000 1,100 1,200 200,000 900 900 870 880 1,000 800 800 840 700 700 720 800 150,000 670 630 650 580 620 600 100,000 420 400 50,000 200 0 0 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 High-quality fiber Low-quality fiber Brazil’s production Rest of the world *Adopted prices for UG and Bahia fiber types for high-quality and low-quality fibers respectively Source: FAOSTAT, “Sisal,” Retrieved October 2019; Committee on Commodity Problems, Intergovernmental Group on Hard fibers, FAO 7 report, 2017 Tanzania is the global leader of high-quality sisal, due to historically organized producers, despite limited innovation Global sisal production with top 5 producers (2013 – 2017) Strengths of Tanzanian sisal Tons Sisal is a legacy crop in Tanzania with over 349,376 350,000 341,821 30 well established estates and businesses 304,970 Sisal is designated as a strategic crop in 293,608 22% 21% 300,000 Tanzania, promising more support for its 20% 22% 4% 4% 249,382 development in the coming years 250,000 5% 5% 5% 6% 6% 5% 7% Sisal grows well in arid areas, and needs 34% 200,000 8% 6% 11% 10% limited inputs to get a sufficient quantity of 8% harvest for profitability 11% 150,000 13% 5% 7% East African sisal is recognized as a superior 9% quality fiber than Brazilian sisal due to its 100,000 53% 53% 13% central processing 49% 47% 50,000 32% Sisal is a labor-intensive crop to plant, harvest, and process, and labor in Tanzania is 0 readily available 2013 2014 2015 2016 2017 The ports of Tanga and Dar es Salaam can Brazil Kenya China easily export sisal around the world Tanzania Madagascar Others Source: FAOSTAT, “Sisal,” Retrieved September 2019; Committee on Commodity Problems, “IGGHF,” 2015; Dalberg stakeholder 8 interviews Sisal in Tanzania has in the past been grown on large estates, many of which have their own spinning mills PRIMARY SECONDARY INPUTS PRODUCTION MARKETS PROCESSING PROCESSING Sisal is drought-resistant; Estates have historically Most processors only process to Most processors operate at 80% of fiber is exported to however, it benefits from dominated production since fibers given higher operational c.30% capacity due to low global markets which inputs for increased the colonial era, as sisal costs in semi-processing and demand for finished products demand high quality from the yields and better fiber requires huge tracts of land ease of market access given price competitive estates quality to realize health margins substitutes Pesticides & herbicides Most estates do not Global use if they clear land before harvest Fertilizer Increasing use of sisal Large estate Fiber processing Spinning mill Regional waste 72% of market center Labor 50 people/ha for land preparation and Sisal leaves are passed through a harvesting decorticator that peels the flesh of the leaves apart, leaving fiber. This uses large Domestic Land amounts of water. The obtained wet fiber Average size of is dried in the sun for 1 – 2 days, after 5,000ha which it is brushed to make it softer and baled into 250kg stocks Source: Dalberg stakeholder interviews 9 Smaller commercial farmers and smallholder farmers have entered the industry, producing high- and low-quality sisal PRIMARY SECONDARY INPUTS PRODUCTION MARKETS PROCESSING PROCESSING Farmers currently do not There is an increasing Availability of mobile sisal Most processors operate Market for smallholder sisal use inputs due to a lack of number of SHF in sisal processing machines in under capacity is the domestic and regional financing and extension production which is inline Tanzania has increased with market for final products, workers.
Recommended publications
  • Investigation of Mechanical Behaviour of Sisal Bamboo and Epoxy Reinforced Natural Composite
    International Journal of Engineering Applied Sciences and Technology, 2021 Vol. 5, Issue 12, ISSN No. 2455-2143, Pages 307-310 Published Online April 2021 in IJEAST (http://www.ijeast.com) INVESTIGATION OF MECHANICAL BEHAVIOUR OF SISAL BAMBOO AND EPOXY REINFORCED NATURAL COMPOSITE Gobi K Kaleeswaran M Department of Mechanical Engineering Department of Mechanical Engineering P.A. College of Engineering and Technology, P.A. College of Engineering and Technology, Pollachi, Coimbatore, India. Pollachi, Coimbatore, India. Amaresh D Dhanush R Department of Mechanical Engineering Department of Mechanical Engineering P.A. College of Engineering and Technology, P.A. College of Engineering and Technology, Pollachi, Coimbatore, India. Pollachi, Coimbatore, India. Abstract - Now-a-days, The natural sisal/bamboos from serve the desirable properties. Further, though composite types renewable natural resources offer the potential to act as a are often distinguishable from one another, no clear reinforcing material for polymer composites alternative to determination can be really made. The demands on matrices are the use of glass, carbon and wood. Among various natural many. They may need to temperature variations, be conductors fibers, sisal or bamboo is most widely used natural fiber due or resistors of electricity, have moisture sensitivity etc. This to its advantages like easy availability, low density, low may offer weight advantages, ease of handling and other merits production cost and satisfactory mechanical properties. For which may also become applicable depending on the purpose a composite material, its mechanical behavior depends on for which matrices are chosen. Solids that accommodate stress many factors such as fiber content, orientation, types, to incorporate other constituents provide strong bonds for the length etc.
    [Show full text]
  • Mechanical Behaviour of Hybrid Composites Prepared Using Sisal-Pineapple-Kenaf Fibre
    International Journal of Recent Technology and Engineering (IJRTE) ISSN: 2277-3878, Volume-8 Issue-5, January 2020 Mechanical Behaviour of Hybrid Composites Prepared using Sisal-Pineapple-Kenaf Fibre D Tamilvendan, G Mari Prabu, S Sivaraman, A. R. Ravikumar durability, tensile strength, impact strength, rupture strengths, Abstract: Variety of application use fibre reinforced composites stiffness and fatigue characteristics. Due to these numerous because of their intrinsic properties in mechanical strength, superior properties, they are extensively used in the machine renewability and low production cost compared to conventional parts like drive shafts, tanks, pressure vessels , automotive, materials. Natural fibres are environmentally friendly their use will not break the budget when used as an alternative to the combustion engines, thermal management, railway coaches regular materials. Reinforcement used in polymer is either and aircraft structures and power plant structures. man-made or natural. Man-made synthetic, metallic, Composites are made up of chemically distinct multiphase semi-synthetic, polymer fibres have superior specific strength but materials separated by distinct interface that exhibit better their high cost of production limits its application and feasibility to combination of properties compared to the constituent make composites. Recently there is a rise in use of natural fibres materials. Composite material is a combination of robust from various natural resources which are available abundantly. Composites based on natural fibres have their advantages of cost load-carrying material (known as reinforcement) imbedded in making the fibres from different vegetables, wood, animals and with weaker materials (known as matrix) differing in minerals. In this work a thorough and systematic inquiry composition on a macro scale.
    [Show full text]
  • Raffia Palm Fibre, Composite, Ortho Unsaturated Polyester, Alkali Treatment
    American Journal of Polymer Science 2014, 4(4): 117-121 DOI: 10.5923/j.ajps.20140404.03 The Effect of Alkali Treatment on the Tensile Behaviour and Hardness of Raffia Palm Fibre Reinforced Composites D. C. Anike1,*, T. U. Onuegbu1, I. M. Ogbu2, I. O. Alaekwe1 1Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University Awka, Anambra State, Nigeria 2Department of Chemistry Federal University Ndufu-Alike, Ikwo Ebonyi State, Nigeria Abstract The effects of alkali treatment and fibre loads on the properties of raffia palm fibre polyester composite were studied. Some clean raffia palm fibres were treated with 10% NaOH, and ground. The ground treated and untreated fibres were incorporated into the ortho unsaturated polyester resin. The treated and the untreated fibre composites samples were subjected to tensile tests according to ASTM D638 using instron model 3369. The microhardness test was done by forcing a diamond cone indenter into the surface of the hard specimen, to create an indentation. The significant findings of the results showed that alkali treatment improved the microhardness and extension at break at all fibre loads, better than the untreated fibre composites, with the highest values at 20% (14.40 and 3.47mm for microhardness and extension at break respectively). Tensile strength, tensile strain and modulus of elasticity also improved for alkali treated fibre composites, except in 5% and 20% for tensile strength, 15% for tensile strain, and 15% and 20% for modulus of elasticity, compared to the corresponding fibre loads of untreated fibre composites. Keywords Raffia palm fibre, Composite, Ortho unsaturated polyester, Alkali treatment The main drawbacks of such composites are their water 1.
    [Show full text]
  • Installation Guidelines for Livos Wallcovering
    Cu& sisalcarperrant.com INSTALLATION GUIDELINES FOR LIVOS WALLCOVERING RECOMMENDED ADHESIVE Use Sisal #1-422 Adhesive (available in 3.5 gallon pail and covers 23 sq/yds). • Sisal is a natural fiber that reacts to excess moisture in other types of wallcovering and multi-purpose adhesive by shrinking before the adhesive dries and sets, which is normally during the first 24 hours after the wallcovering has been applied to the wall. • Sisal #1-422 Adhesive contains fire retardant for passage of the NFPA test method, which is used by national commercial fire codes such as the Uniform Building Code. HUMIDITY LEVELS EFFECT THE DRYING TIME OF THE ADHESIVE Airborne moisture causes the adhesive to dry slowly and may cause the sisal wallcovering to shrink at the seams and edges. Avoid this condition by installing sisal wallcovering in climate control buildings or use mechanical fans at the point of installation to provide air movement. Keeping all doorways to the outside of the building closed is also recommended. ADHESIVE APPLICATION 1. For ease of troweling the low water content #1-422 Sisal Adhesive, apply adhesive to primed new walls or previously painted walls. On walls that have been stripped of old wallcovering, priming the old adhesive is not necessary. 2. Use a 3/16th x 5/32nd V-notched trowel. Check previously used trowels since the notch depth can be scraped flat with use. 3. Spread adhesive over the entire surface. Seal the edges with a clear latex seam sealer. Spots left uncovered with adhesive cause air pockets. 4. A good bond with the wallcovering can only occur when the wallcovering is pressed into the adhesive.
    [Show full text]
  • An Analysis of the Abaca Natural Fiber in Reinforcing Concrete Composites As a Construction Material in Developing Countries
    University of Northern Iowa UNI ScholarWorks Dissertations and Theses @ UNI Student Work 1988 An analysis of the abaca natural fiber in einforr cing concrete composites as a construction material in developing countries Rolando V. Magdamo University of Northern Iowa Let us know how access to this document benefits ouy Copyright ©1988 Rolando V. Magdamo Follow this and additional works at: https://scholarworks.uni.edu/etd Part of the Construction Engineering and Management Commons, and the Materials Science and Engineering Commons Recommended Citation Magdamo, Rolando V., "An analysis of the abaca natural fiber in einforr cing concrete composites as a construction material in developing countries" (1988). Dissertations and Theses @ UNI. 865. https://scholarworks.uni.edu/etd/865 This Open Access Dissertation is brought to you for free and open access by the Student Work at UNI ScholarWorks. It has been accepted for inclusion in Dissertations and Theses @ UNI by an authorized administrator of UNI ScholarWorks. For more information, please contact [email protected]. INFORMATION TO USERS The most advanced technology has been used to photo­ graph and reproduce this manuscript from the microfilm master. UMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer. The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction. In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted.
    [Show full text]
  • Effect of Alkaline Treatment on Tensile Properties of Raffia Palm Fibre
    Vol.5 (4), pp. 28-31, November 2018 ISSN 2354-4155 DOI: https://doi.org/10.26765/DRJEIT.2018.2598 Article Number: DRJA5731602598 Copyright © 2018 Author(s) retain the copyright of this article Direct Research Journal of Engineering and Information Technology http://directresearchpublisher.org/journal/drjeit/ Research Paper Effect of Alkaline Treatment on Tensile Properties of Raffia Palm Fibre *1Uguru Hilary and 2Umurhurhu Benjamin 1Department of Agricultural and Bio-environmental Engineering Technology, Delta State Polytechnic, Ozoro, Nigeria. 2Department of Mechanical Engineering Technology, Delta State Polytechnic, Ozoro, Nigeria. *Corresponding Author E-mail: [email protected] Received 4 October 2018; Accepted 5 November, 2018 The mechanical properties of raffia palm fibres treated with tensile properties of treated raffia fibre were better than raw sodium hydroxide (NaOH) solution have been investigated in this raffia fibre. Based on the results, the tensile strength and Young study. Tensile properties (Tensile strength, Young modulus, modulus increased from 67.73 to 107.07 MPa and 1.261 to 1.406 elongation at break, tensile energy, tensile strain and yield GPa after the alkali treatment. The fibre elongation at break and strength) of the raffia palm fibres were tested under direct tension tensile energy decreased from 6.38 to 5.25 mm and 0.103 to 0.033 in a Universal Testing Machine at the crosshead speed of 5.00 Nm respectively. The results of this study are expected to be mm/min. The raffia fibres were treated with 5 percent NaOH useful in the production of composite boards and textile solution under ambient temperature for one hour.
    [Show full text]
  • FIBRE YIELDING PLANTS of INDIA Genetic Resources, Perspective for Collection and Utilisation
    Article FIBRE YIELDING PLANTS OF INDIA Genetic resources, perspective for collection and utilisation Anjula Pandey and Rita Gupta National Bureau of Plant Genetic Resources, New Delhi-110012, India (excluding wood fibres) are grouped into Abstract soft fibres/ bast fibres, hard fibres or structural fibres and surface fibres. Bast The paper provides a brief overview of the major fibre yielding plants and fibres are exogenous in origin and are their uses in India. This account includes data mainly based on field experience, generally more durable, resistant to market surveys, ethnobotanical information and other relevant literature retting, bleaching and other processing available on this account. The enumeration of the species listed under various treatments. They are associated with plant families provides ready reference for use and commercial names of vascular tissues, such as phloem, pericycle important fibre types. The analysis provides the untapped wealth under this and cortex. Examples of bast fibres are category for widening the base of fibre genetic resources, future collections jute, hemp, flax, roselle, ramie, etc. and utilisation. The promising species thus indicated may provide scope for Structural fibres primarily associated with domestication and future cultivation. monocotyledonous plants are shorter, lignified cells surrounding vascular tissue. Introduction Gradual depletion of forest They are endogenous in nature, coarse, resources of plant based material resulted weaker, hard and brittle and thus less Among the plant species in loss of important diversity. The plant durable than the bast fibres. The common commonly used by man the fibre yielding fibres have specific qualities such as examples include Manila hemp, Sisal and plants hold the second position after the thermal insulation, resistance to water and Kittul fibres.
    [Show full text]
  • Experimental Study on Flax and Sisal Hybrid Composites Reinforced with Epoxy Resin
    International Journal For Technological Research In Engineering Volume 3, Issue 10, June-2016 ISSN (Online): 2347 - 4718 EXPERIMENTAL STUDY ON FLAX AND SISAL HYBRID COMPOSITES REINFORCED WITH EPOXY RESIN Santosh Madeva Naik1, Prof. Gururaja Sharma T2, Prof. Ganesh Kalagi3 1PG Student, 2Assistant Professor, School of Mechanical Engineering, REVA University, Bangalore. 3Assistant Professor, Department of Mechanical Engineering, SMVITM, Bantkal, Udupi. Abstract: Natural fibers have been used to reinforce II. METHDOLOGY materials for more than 200 years. The aim of this study is The methodology depicted in Figure.2 has been adopted as to evaluate mechanical properties, such as tensile, shown, fabrication and testing of composite material for compression and bending properties of hybrid sisal and flax mechanical properties in manufacturing has been selected as reinforced with epoxy resin composites. Natural fibers like a broad field of research. The composite specimen is as hemp, jute, flax, sisal and banana have the advantages fabricated according to ASTM standard. The rule of mixture that they are renewable resources and these agricultural will be calculated for each test. The various compositions are wastes can be utilized to organize fiber composites, which taken as 20% sisal fiber 5% flax fiber, 75% epoxy resin. The has many advantages over conventional glass fiber and other composition 20% sisal fiber10% flax fiber, 70% epoxy inorganic materials. Strength of the material which is resin and in another composition 20% sisal fiber,15% flax prepared using epoxy resin with natural sisal and flax fiber, 65% epoxy resin as taken. fibers is mainly depend on the composition based on which matrix and reinforcement being added.
    [Show full text]
  • Preparation and Characterization of Flax, Hemp and Sisal Fiber-Derived
    Research Article Adsorption Science & Technology Preparation and 2018, Vol. 36(1–2) 441–457 ! The Author(s) 2017 DOI: 10.1177/0263617417700635 characterization of flax, journals.sagepub.com/home/adt hemp and sisal fiber-derived mesoporous activated carbon adsorbents Melike Dizbay-Onat Center for Community Outreach Development (CORD), College of Arts and Sciences, University of Alabama at Birmingham, Birmingham, AL, USA Uday K Vaidya Department of Mechanical, Aerospace and Biomedical Engineering, Department of Materials Science & Engineering, University of Tennessee, Knoxville, TN, USA Jo Anne G Balanay Environmental Health Sciences Program, Department of Health Education and Promotion, East Carolina University, Greenville, NC, USA Claudiu T Lungu Department of Environmental Health Sciences, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA Abstract The first aim of this study was to investigate mesoporous activated carbon adsorbents from sisal, hemp, and flax fibers by cost-effective methods. Fibers were impregnated with low concentration (20 wt.%) phosphoric acid. Carbonization temperatures were defined by thermal analysis. Bast fibers (hemp, flax) decompose at lower temperatures (419.36C, 434.96C) than leaf fibers (sisal, 512.92C). The second aim was to compare bast and leaf fibers-derived activated carbon adsorbents by determining physical adsorption properties, chemical compositions, scanning electron microscope, and Fourier transform infrared spectroscopy. Results showed that natural fibers have good candidates to prepare mesoporous activated carbon adsorbents with high surface area (1186–1359 m2/g), high mesopore percentage (60–72%), and high C content (80–86%). Even though leaf-derived activated carbon developed more mesoporous structure 2 (72%), bast-derived activated carbons provided higher surface areas (Shemp ¼ 1359 m /g; 2 Sflax ¼ 1257 m /g) and C content.
    [Show full text]
  • Trial of Herbicide Control Methods for Sisal Agave Sisalana in the Arid Island Environment of Aldabra Atoll, Seychelles
    M. van Dinther, N. Bunbury & C.N. Kaiser-Bunbury / Conservation Evidence (2015) 12, 14-18 Trial of herbicide control methods for sisal Agave sisalana in the arid island environment of Aldabra Atoll, Seychelles Martijn van Dinther1, Nancy Bunbury1,* and Christopher N. Kaiser-Bunbury2 1Seychelles Islands Foundation, P.O Box 853, Victoria, Mahé, Seychelles 2Ecological Networks, Department of Biology, TU Darmstadt, Schnittspahnstr. 3, 64287 Darmstadt, Germany SUMMARY Sisal Agave sisalana is an invasive alien plant species of concern at the UNESCO World Heritage Site of Aldabra Atoll in the Seychelles. Physical control efforts since the 1970s to remove sisal from Aldabra have only been partially successful because the roots cannot be completely removed, resulting in continuous control efforts. We conducted a seven month herbicide trial, using different herbicide concentrations with two application methods, to determine the most effective and feasible control method for sisal. We also checked effects on surrounding native plants. The highest treatment mortality was from 50% herbicide concentration applied directly to the cut growth tip, which resulted in 80% sisal mortality after four months. Fewer treated plants died at lower herbicide concentrations and more small plants died than large plants. No sisal plant died that was foliar sprayed, only cut, or in the control group. There were no visible negative effects of any treatment on the surrounding native flora. The results indicate that chemical control of sisal is effective at high herbicide concentration applied directly to the cut growth tip. A full-scale eradication of sisal from Aldabra has been started based on the trial results. BACKGROUND Aldabra has been strictly protected since 1976, was inscribed on the UNESCO World Heritage list in 1982 and has been Invasive alien species are one of the top four drivers of managed since 1979 by the Seychelles Islands Foundation.
    [Show full text]
  • CARIBBEAN REGION - NWPL 2014 FINAL RATINGS User Notes: 1) Plant Species Not Listed Are Considered UPL for Wetland Delineation Purposes
    CARIBBEAN REGION - NWPL 2014 FINAL RATINGS User Notes: 1) Plant species not listed are considered UPL for wetland delineation purposes. 2) A few UPL species are listed because they are rated FACU or wetter in at least one Corps region.
    [Show full text]
  • World Wide Market and Price Development of Natural Fibres
    World wide market and price development of natural fibres Dipl.-Economist Sven Ortmann nova-Institut, Germany 4th EIHA Conference, November 2006 www.nova-institut.de/nr www.nova-institut.de/nr World map Natural fibre producing countries (except cotton) Countries marked yellow grow and harvest more than one thousand hectares of abaca, coir, flax, hemp, henequen, jute, kenaf or sisal fibres per year. Source: FAO www.nova-institut.de/nr Natural fibres in this study - main data Natural Fibre Plants Area harvesting (ha) Production (Mt) (world) (world) Jute 1.343.620 2.859.105 Jute-like 296.241 382.581 (Kenaf et al.) Sisal 375.687 315.573 Coir (only by-product) 398.000 Flax 504.995 770.467 Hemp 52.307 67.818 Source: FAOSTAT 2006, FAO Commodities & Trade Division (Coir) www.nova-institut.de/nr Jute (& Kenaf) www.nova-institut.de/nr Price history of jute fibres Jute fibres as second most important natural fibres - first is cotton - have shown some periods of good price stability. Seasonal price changes are not recognizable. Also visible in this diagram are two past price peaks and the steady price increase since 2004. The price increased due to strong demand despite India’s reduction of stocks since 2004. Source: FAO www.nova-institut.de/nr Jute fibre production (& Kenaf) Averages of jute production in 2002-2003 India Bangladesh Myanmar Nepal Area harvested [1000 ha] 991,5 468,0 59,0 12,0 Production of fibres [1000 t] 2019,0 878,0 42,0 17,5 Fibre Yield [t/ha] 2,0 1,9 0,7 1,5 Averages of jute, kenaf & allied fibre production in 2002-2004 India Bangladesh China Myanmar Thailand Nepal Vietnam Other Area harvested [1000 ha] 1005 485 55 57 30 12 Production of fibres [1000 t] 1830,0 893,7 152,0 44,9 47,7 17,0 15,9 56,7 Fibre Yield [t/ha] 1,8 1,8 2,7 0,8 1,6 1,5 India and Bangladesh are the primary producers of jute fibres.
    [Show full text]