COCOYAM MARKETING IN SOUTH EAST NIGERIA


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COCOYAM MARKETING IN SOUTH EAST NIGERIA

ABSTRACT:          Cocoyam is highly perishable and considerable economic losses occur after it is harvested. This is as a result of rot, sprouting and other physiological changes. These losses could be reduced through efficient storage, processing and marketing. This study is about economic study of cocoyam marketing in south-east Nigeria. It specifically ranked market participants preference for cocoyam cultivars and the reasons for such preferences. It showed the main marketing channels and socio-economic and institutional factors affecting the choice of marketing channels. It showed the structure and conduct of cocoyam marketing and socio-economic and institutional factors affecting the volume of cocoyam marketed. It estimated the costs and benefits of cocoyam marketing as well as the net income of six storage methods. It assessed the effectiveness of six storage methods. The study was guided by null hypotheses that socio-economic and institutional factors did not determine the choice of marketing channels; that socio-economic and institutional factors did not determine volume of cocoyam marketed; that the mean income of farmers, wholesalers and retailers did not significantly differ and that the mean cocoyam rot of the six storage methods did not significantly differ. A total of 260 marketers comprising 100 producers, 60 wholesalers and 100 retailers were selected through stratified random sampling techniques. Data were collected from both primary sources. Primary data emanated from various questionnaires and weekly/monthly monitoring of the six storage methods.  Descriptive statistics such as tables, charts, percentages and mean and inferential statistics such net income analysis, four firm concentration ratios, Herfindahl-Hirschman Index and Gini-Coefficient, Multinomial logit regression model, correlation analysis, Ordinary least square regression model and Analysis of Variance were used to achieve the objectives. The results showed that producers, wholesalers and retailers preferences for cocoyam cultivars depended on culture and food pattern more than anything else. It also showed that four firm concentration ratios and Herfindahl-Hirschman Index did not indicate oligopolistic behavior although their Gini-coefficient showed unequal distribution of market sale. The average net income of producers, wholesalers and retailers per year were ₦204,246, ₦3,650,000 and ₦474,000  each respectively while the net income of the six storage methods were ₦56.92, ₦47.96, ₦47.80, ₦43.36, ₦15.25 and ₦3.00 per kg respectively. Approximately 33% of the variations in the volume of cocoyam marketed were explained by socio-economic and institutional variables. The multinomial logit regression analysis has R2 value of 0.56 and showed that age and storage cost were significant (P < 5%).The correlation results for objectives iii and vi showed that distance to market, family labour, size of land allocated to cocoyam income from other sources and purpose of marketing were significant at (p < 0.001) and thus contribute to improvement in marketing. The Analysis of Variance (ANOVA) showed statistically significant difference (P < 0.01) in the mean income of farmers, wholesalers and retailers as well as the mean disease severity of the six storage methods. So, the first, second, third and fourth hypotheses were rejected, while the alternatives were accepted.  The study therefore, recommended that government should build the capacity of market participants through seminars. Additionally financial/technical support should be provided especially to the commercial farmers. There is also need for agricultural-chain partnership between the farmers and processors.   TABLE OF CONTENTCover Page                                             Title Page                                             iCertification                                            iiDedication                                            iiiAcknowledgement                                         ivTable of contents                                         vList of Tables                                             ixList of figures                                             xiAbstract                                             xiiCHAPTER ONE: INTRODUCTION                            1 1.1     Background                                         11.2     Statement of Problems                                    31.3     Objectives of the study                                    51.4     Hypotheses                                        61.5     Justification                                        6 CHAPTER TWO: LITERATURE REVIEW                        82.1       Basic concepts of market analysis                            82.1.1:   Market                                            82.1.2:   Marketing                                         82.1.3:   Cocoyam marketing system                                 92.1.4:    Marketing chain                                     92.1.5:    Marketing channel                                    92.1.6:    Market intermediaries                                112.1.7:    Storage technologies in cocoyam                             132.1.7.1: Storage technologies assessment                             142.1.7.2:  Economies of storage                                152.2:      Theoretical framework                                162.2.1:   Theories of the firm                                     172.2.1.1: Theory of market structure                                 182.2.2:    Theory of industrial organization                            192.2.3:   Theory of Market Structure-Conduct-Performance                    202.2.4:   Commodity chain theory                                212.2.5:    Transaction costs theory                                222.2.6:    Discrete choice theory                                 222.2.7:    Theory of cocoyam storage                                232.2.7:     Household farm model                                 232.3:       Analytical Framework                                242.3.1     Concentration ratios                                     242.3.1.1: Four Firm Concentration Ratios                            252.3.1.2: Herfindahl Hirschman Index                                252.3.1.3: Gini Coefficient (GC)                                 262.3.2: Marketing Performance                                262.3.2.1: Calculation of marketing margins for cocoyam                    272.3.2.2: Net margins                                        272.3.2.3: Distribution of Consumer’s Naira                            272.3.2.4: Marketing costs                                    282.3.2.5: Rate of return per naira investment ratio                        282.3.3      Multinomial Logit Model                                282.3.4       Multiple Regression Model                                 292.3.5:   Analysis of Variance (ANOVA)                            30CHAPTER THREE: METHODOLOGY                            323.1         Study Area                                        323.2         Sampling Procedure                                    323.3         Data collection                                    333.4         Data Analysis                                    353.5         Model Specification                                     363.5.1:    Specification of multinomial logit models                                                                363.5.2:     Calculation of concentration ratio                            413.5.3:     Herfindahl Hirschman Index                             413.5.4:     Gini Coefficient                                    423.5.5:     Calculation of the marketing costs                            423.5.5:     Breakdown of consumer’s naira or price spread                         423.5.6:      Calculation of the net margins                             433.5.7:      Calculation of the net margins of selected storage                    433.5.9: Rate of return per naira investment ratio                        443.5.12: Calculation of the percentage loss in fresh weight, rot and sprout            443.5.13: Specification of regression model                            453.6:      Test of hypothesis                                    473.6.1: Specification of ANOVA                                47      CHAPTER FOUR: RESULTS                                484.1:        Socio-economic characteristics of Heads of Household and their relationships with marketing behavior    484.1.1:  Socio-economic characteristics of respondents                    484.1.2: Socio-economic characteristics and institutional factors influencing the behavior of  operators 514.2:1:  Traders preference for cocoyam cultivars                        574.2.2:  Reasons for preferences                                 574.3: Description of cocoyam marketing channels                        584.3.1: The roles and linkages of the chain actors involved in various marketing functions    584.3.2: Alternative marketing channels for cocoyam                        614.3.3: Problems of marketing channels                            634.4: Socio-economic and institutional factors influencing choice of marketing channels    634.4.1: Correlations between choice of marketing channel and socio-economic Institutional variables    654.4.2: Variable definitions                                    664.4.3: Model empirical results                                664.4.4: Significant variables in the multinomial logit                        67 4.4.5: Test for hypothesis                                     694.5: Structure and conduct of cocoyam marketing systems                    694.5.1:  Analysis of marketing structure                            704.5.1.1: Degree of concentration                                70 4.5.1.2: Herfindahl Hirschman index                                724.5.1.3: Gini coefficient and Lorenz curve                            764.5.1.4: Condition of entry and exit from cocoyam markets                    794.5.1.5: Licensing procedure                                    794.5.1.6:  skills                                            794.5.1.7: Packaging                                        794.5.1.8: Standard and grades                                    794.5.2: Market conduct                                        804.5.2.1: Selling                                         804.5.2.2: Buying                                         804.5.2.3: Transportation                                    804.5.2.4: Storage                                         804.5.2.5: Market information                                    814.5.2.6: Capital                                         814.5.2.7: Risk bearing                                         814.5.2.8: Price information and setting                                814.5.2.1: Formal and informal group                                824.6: Marketing performance                                    824.6.1: Market margins                                        824.6.1.1: Price spread                                         834 .6.1.2: Share in consumer’s naira                                 834.6.1.3:  Marketing costs                                     844.6.1.4: Net profit margin                                     864.6.1.5: Percentage profit margin                                 864.6.1.6: Return on Investment                                 874.6.1.7: Marketing efficiency                                    884.6.1.8: Net income                                        884.6.1.9: Test for hypothesis                                     894.7: Factors determining volume of cocoyam marketed                    904.7.1: Correlation between volumes of cocoyam marketed and socio-economic and institutional variables   914.7.2: Variable definition                                    924.7.3: Explanatory model for volume of cocoyam marketed                    924.7.4: Test for hypothesis                                     944.8: Effect of various storage methods on the fresh weight, sprout and rots            954.8.1: Determination of percentage fresh weight loss                        954.8.2: Determination of percentage sprouting                            954.8.3: Determination of percentage rot incidence                        964.8.4: Test for hypothesis                                                                                                       964.9: Costs and returns of the six storage methods                         97CHAPTER FIVE: SUMMARY, CONCLUSION AND RECOMMENDATION           99 5.1: Summary                                              995.2: Conclusion                                        1035.3: Recommendation                                        1045.4: Further studies                                        106REFERENCES                                        107APPENDIX                                            118LIST OF TABLESTable 1.1: World production of edible aroids (cocoyam)                    1Table 4.1: Distribution of respondents according to their socio-economic characteristics    48Table 4.2: Distribution of respondents according to socio-economic and institutional Conditions                             51Table 4.3: Distribution of cocoyam according to types of cocoyam cultivars        56Table 4.4: Ranking of cocoyam cultivars                            57Table 4.5: Distribution of producers according to their marketing outlets            58Table 4.6: Distribution of respondents according to ranking of major constraints        63Table 4.7: Association between socio-economic variables and choice of marketing Channels                     65Table 4.8: Definition of variables of multinomial logit model                66Table 4.9: Results of multinomial logit model                        67Table 4.10: Proportion of farmers, wholesalers and retailers in the sampled market        70Table 4.11: Concentration ratios of farmers                            71Table4.12: Concentration ratios of wholesalers                        71Table 4.13: Concentration ratios of retailers                            72Table 4.14: Herfindahl Hirschman index (HHI) for farmers                    73Table 4.15: Herfindahl Hirschman index for wholesalers                    74Table 4.16: Herfindahl Hirschman index for retailers                    75Table 4.17: Distribution of farmers by yearly sale                        76Table 4.18: Distribution of wholesalers by yearly sale                    77Table 4.19: Distribution of retailers by yearly sale                        77Table 4.20: Sale price of cocoyam at different market intermediaries            83Table 4.21: Price spread from producers to wholesalers and retailers            83Table 4.22: Price spread from Producers to wholesalers and retailers in percent        84Table 4.23: Average operating costs of producers per 100kg bag in Naira            84Table 4.24: Average operating costs of wholesalers per 100 kg in Naira             85Table 2.25: Average operating costs of retailers per 100kg in Naira                86Table 4.26: Summary marketing costs of farmers, wholesalers and retailers        86Table 4.27: Net profit margins of cocoyam producers and other market intermediaries    86Table 4.28: Percentage profit margin of cocoyam producers and other market Intermediaries                  87Table 4.29: Returns to investment in percentage                         87Table 4.30: Marketing efficiency in cocoyam                        88Table 4.31: Net income of average farmers, wholesalers and retailers            89Table 4.32: Duncan test for mean income of farmers, wholesalers and retailers         90Table 4.33: Correlation between the volume of cocoyam marketed and other Independent variables              91Table 4.34:   Definition of variables specified in the regression model            92Table 4.35:   OLS estimates of volume of cocoyam marketed functions corrected to Selectivity bias               92Table 4.36: Fresh weight loss in grams for cocoyam in indicated storage methods and their percentages during the storage periods of four months   95Table 4.37:  Number  of cocoyam under storage in each of the storage method and theirPercentage sprouting after four months   96Table 4.38   Number of cocoyams under storage in each storage method and their percentage rot incidence after four months of storage      96Table  4.39: Duncan multiple range test for the mean disease severity of six storage methods of cocoyam        96Table 4.40: Net income of six cocoyam storage methods in (₦)                98CHAPTER ONEINTRODUCTION 1.1    BACKGROUND INFORMATION Cocoyam (Colocasia spp and Xanthosoma sagittifolium) originated from Southeast Asia.  It was introduced into Nigeria and other West Africa countries in 16th and 17th centuries Bown, (2000).  It is third largest root and tubers in south-east Nigeria after cassava and yam in terms of production and acreage Nwagbo, Okorji, and Ugwu (1987). Cocoyam is grown for its edible starchy corm and leaves.      Table 1.1: World Production of Edible Aroids (cocoyam)      2008    2007    2006    2005    2004    2003World Production (Mt)    11,773,733    11,348,596    11,674,399    11,224,032    10,916,616    10,700,770 Nigeria production (Mt)    5,387,000    4,996,000    5,473,000    5,068,000    5,010,000    4,980,000Source: FAOSTAT, 2010FAOSTAT, (2010) estimated the production of cocoyam in Nigeria in 2008 as 5,387,000 metric tons out of a total of 11.77 million metric tons of world output of cocoyam. Coastal West Africa accounts for 90% of the global output with Nigeria accounting for 50% of this (FAOSTAT, 2010). World cocoyam production increased slowly from 10.7 to 11.77 million metric tons between 2003 and 2008 (Table 1) (FAOSTAT, 2010). The table also shows production of cocoyam in Nigeria between 2003 and 2008. Production of cocoyam was approximately 46% from 2003 to 2006 in Nigeria and then decline to 45% 2007 and rose up again to approximately 46% of world output in 2008.Cocoyam is a popular root and tuber grown and marketed in the study area where it is relatively consumed in large quantities. It thrives well in warm, humid forest areas where high annual rainfall and long wet season are conducive for its optimum yield. Considering that this climate makes up about 80 percent of land mass in South-east Nigeria, an efficient and effective cocoyam marketing system that will increase production cannot be overlooked. During the past decades, products of cocoyam were mainly consumed at home in South-east Nigeria. Their nutrient content carbohydrates, protein, fats, crude fiber, ash, carotene, thiamine, riboflavin, Niacin and vitamin C are more digestible when compared to other root crops (Chukwu, Nwosu, Madu, Chinaka and Okoye, 2008). However, recently, there has been an increase in output and commercialization of cocoyam. Also as the processes of urbanization progresses in Nigeria, an increasing share of national food consumption takes place at locations other than where food is produced. The marketing system must develop well to satisfy the local demand and to provide necessary services as producers sell in markets distant from where consumers buy food items (Enete, 2003 and FAO, 2009).  Cocoyam marketing, like any other agricultural marketing, encompasses everything that happens between the farm gate and the consumer, including processing, storage, assembly, wholesaling, and retailing of cocoyam (Kohl and Uhl, 1985; Takele, 2010). Cocoyam industry consists of primary production by producers as well as creation of form, space and time utilities by other market participants. Economic study of cocoyam marketing is viewed as obtaining scientific evidence on the situation of cocoyam marketing and identification of potential intervention as a way of assisting the industry in contributing to socio-economic development of the nation. However, going by the estimated figure of postharvest losses in cocoyam, Chukwu, et al, (2008), reported about 50% economic losses after two months and about 95 % after five months as a result of rots, sprouting and other physiological changes. This is pointing to poor access to agricultural chain partnership, rural infrastructure, storage, processing and market for cocoyam. Storage participants used six main storage methods for cocoyam among which are storage in the basket in storage house, on the floor in storage house, storage in the shelf in storage house, storage in raised platform in the barn, heap in barn, bury in the barn. However, reliable information is not available on the relative effectiveness of these methods in reducing losses in fresh weight, rots and other changes.     Cocoyam is produced beyond the needs of the households and they desire to use the surplus in satisfying their other needs. Producers have three main options for marketing their produce. At the beginning of the marketing channel producers either sell directly to consumer or to other participants (retailer or wholesaler) depending on various factors. Other participants in the market channels such as retailers or wholesalers not only create possession utility by transferring cocoyam from surplus to deficit region but also enhance the value of cocoyam in terms of form, place and time for consumers.        However, transaction costs and other institutional and socio-economic factors could limit the volume of supply of cocoyam as well as the preferences for marketing channel. Scientific information on social and other institutional characteristics that affect marketing are needed urgently for improving the volume of cocoyam marketed as well as the decision to participate in cocoyam distribution. Imperfect  market information for buying and selling; lack of cash, and credit availability to finance short-run inventories; insufficient facilities for storage and transportation, no uniform system of grade and standard to facilitate trading at a distance, have been recognized in various studies (Mainville, 2004; Hernandez, 2009; Jari, 2009; Take, 2009; Takele, 2010). Thus attention is required in these areas for improvement of volume of supply as well as choice of marketing channels.  To unleash the potential contribution that this industry could make to improve income and food security of rural poor, assessment of costs and benefits are needed as they are the critical determinant of returns to farmers, traders and other participants in the commodity chain as determined by retail food prices they face. The major components of the analysis of marketing margin consist of gross marketing margin, net marketing margin and farmers’ share of consumers’ price. The net marketing margin accrues to the middlemen as profit (Mainville, 2004; Hernandez, 2009; Jari, 2009; Taka, 2009; Takele, 2010). Marketing of cocoyam requires special attention also because of the diversified nature of demand of the final consumers. Cocoyam may be needed by consumers for the treatment and prevention of blood sugar disorder due to its low glycemic index (slow sustained release of energy to the body) (Daniells, Hughes, Traynor, Vawdrey and Astridge, 2009). A clear understanding of supply determinants as well as factors affecting the decision to participate in different market channels can contribute to the action and efforts of those actors that aim to implement market-led development strategies. Analysis of cocoyam marketing system will also ensure information on economic values of cocoyam and factors hampering the industrial development such as poor access to local markets infrastructure and transport facilities necessary for cocoyam sub-sector development. The outcome of market led development is to assist in sustainable development of the industry by increasing the available information on more market opportunities necessary for generating employment, increasing income, reducing poverty and increase supplies for healthier consumer nutrient. 1.2: STATEMENT OF THE PROBLEMIn South East Nigeria, information on preference for cocoyam cultivars and their reasons for such preferences are needed for identifying the cultivars with highest demand and thus high potentials for improving the income of players. Marketing of cocoyam is also constrained by socio-economic and institutional factors required for maintaining standards and improving competitiveness. It is constrained by technical factors such as lack of post-harvest handling knowledge, storage and limited market (Babatunde and Oyatoye, 2009; Okoye, Dimelu, Okoye and Agwu, 2009; FAO, 2009; Enibe, Chidebelu, Onwubuya, Agbo and Mba, 2008; Jones, 1994; Hay and McCoy, 1977). The consequences have been seasonal glut, increased spoilage of cocoyam tubers, poor market access and severity of food shortages which in turn affect investment in cocoyam production. Economic study of cocoyam based on analyzing the factors influencing the choice of marketing channels as well as volume of supply reveals how weak the performance of output markets are affecting the cocoyam industry in South-east Nigeria.The Federal Government of Nigeria is a member and signatory to World Trade Organization (WTO) since 2001 and has thus liberalized and fully integrated into global economic system (Oji et al., 2005). This implies that producers are facing increasing market competition, both in international and local markets (Jari, 2009). In liberalization markets are organized structures that link co-operatives and producers and thus can bring opportunities to farmers but at the same time great challenges (Blandon, 2006). However, in Nigeria liberalization was translated to mean removal of credit and fertilizer subsidies, increase in import duties of rice, animal and soybean. Thus economic study of cocoyam based on examining structure and conducts of the cocoyam marketing system shows the level of competition, efficiency of cocoyam market structure and where to draw attention for the overall performance. Inequality of income between the rural and urban areas draw people away from agricultural production and this affects farm investment decision. Thus measurement of market performance based on assessment of costs and benefits are needed as they are the critical determinant of income for farmers, wholesalers and retailers. Technical development, supportive institution as well as operational and marketing efficiency motivate market players to continue in production and marketing. It is operating efficiently when the consumer price is equal to the producer price plus marketing costs. The operational efficiency of marketing system is enhanced when the marketing costs are reduced at the same level of output (Babatunde and Oyatoye, 2009; Oguntade and Mafimisebi, 2010).  However, unless the middlemen earn profit in excess of what they require to pay for the interest on borrowed capital and cater for the risk they take their interest in arbitraging across time, space and form will not be sustainable.        Insufficient facilities for storage affect arbitrage across time, space and form. Proper post harvest handling, storage and market access contribute to ensuring quality maintenance for perishable agricultural products. In order words, cocoyam has to be harvested at a specific point in time, but is consumed year-round, thus necessitating proper storage facilities.  Therefore if cocoyams are to be available throughout the year, proper storage facilities have to be implemented by all in the marketing chain: producers, wholesalers, retailers and consumers. Thus evaluation of market performance based on accessing relative effectiveness as well as efficiencies of various methods of storage in reducing loss in fresh weight and other physiological damage are required for identifying the strategies that will reduce these economic losses and increase the income of market participants.Further, there is need for more research with respect to cocoyam marketing in South-east Nigeria. The scope of early studies on cocoyam was limited to production and gender (Okoye, Dimelu, Okoye and Agwu, 2009). Furthermore, the available research base in agricultural marketing has focused on major crops such as cassava, yam and cereals, while the cocoyam sub-sector remained under addressed.  Taking into account the problems of cocoyam markets in South-east Nigeria, three issues are important in the activities of market participants. These are arbitrage in time (storage), in space (transfer) and form (opportunity for agricultural value chain). In line with the foregoing, the following objectives would guide the research.1.3: OBJECTIVES OF THE STUDY   The broad objective of the research is to conduct an economic study of cocoyam marketing in South-east Nigeria.Specifically, the study seeks to:i.    rank market participants preference for cocoyam cultivars and their reasons for such preferences;ii.    describe marketing channels and their problems in south east Nigeria; iii.    analyze socio-economic and institutional factors influencing selection of marketing channel by market participants;iv.    determine the structure and conduct of the cocoyam marketing system; v.    estimate the costs and benefits of cocoyam marketing;  vi.    analyze factors that determine the volume of cocoyam marketed in south east Nigeria;vii.    assess the effectiveness of six methods of storing cocoyam in relation to loss in fresh weight, sprout and rot in south east Nigeria;viii.    estimate the costs and returns of the six storage techniques of cocoyam in south east Nigeria; ix.    make recommendations to the appropriate authorities for intervention policies 1.4: HYPOTHESES OF THE STUDY Based on the above specific objectives, this study was guided by the following null hypotheses:i.    Socio-economic and institutional factors do not affect producer’s marketing channels choices. ii.    Socio-economic factors do not determine the volume of cocoyam marketed.iii.    The mean net income of producers, wholesalers and retailers do not significantly differ.iv.    The mean cocoyam rots of the six storage methods do not significantly differ.1.5: JUSTIFICATION OF THE STUDY   Marketing systems development is critical to present and future economic growth and improvement in the welfare and livelihood systems of Nigeria and other African countries in general (Roy-Macaule, 2002). It is important to recognize the role of marketing systems in linking urban and rural food systems and providing food security especially in the face of changing food policies that affect the systems (GECAFS, 2006; FAO, 2009). Therefore development of strategies related to market structure and conduct are necessary for reducing perishability and thus increasing the productivity and viability in the industry. Improved performance of agricultural markets will therefore encourage productivity and thus enhance food availability, accessibility and utilization.Production has to be accompanied by application of improved post harvest technologies, rural infrastructure and trade related capacity for market access. Such progress may be important for a movement towards commercial production and economic benefit to all the commodity marketing chain. Scientific information on socio-economic characteristics, marketing and other post harvest characteristics and their effects on supply of cocoyam are important in addressing the challenge of cocoyam industry in south east Nigeria.  Several researchers (Omoregie and Thomson, 2001; Gabre-Madhin, 2001; Soderbom and Teal, 2003; Raj, 2007), have indicated that access to market are limited by lack of capacity building, transportation problems, storage losses and information on grade and standard. However there is need to obtain local scientific evidence on the effect of these factors on marketing channels as well as on volume of cocoyam marketed in South east Nigeria.   Huge loss of cocoyam after harvest could be one of the courses of food insecurity of Nigerian citizens. For any meaningful development of cocoyam in Nigeria, production of cocoyam should be accompanied by improvement in marketing. This requires knowledge of the socio-economic and institutional situation as well as structure-conducts-performance of participants. This will highlight areas where intervention can have an impact in addressing the challenges of those who are interested in taking risks involved in arbitrage across time, space and form. In various studies of microeconomic behavior of households in marketing in South East Nigeria, it has been argued that marketing margins have remained high due to inadequate infrastructure, inefficient flow of information, imperfect competition and incomplete credit and insurance. Further, agricultural marketing are also said to be inefficient resulting in high rate of food spoilage, poverty and unaffordable food prices by consumers (Mainville, 2004; Hernandez, 2009; Jari, 2009; Take, 2009; Takele, 2010). However, not many studies have empirically evaluated the validity of these claims to obtain local scientific evidence with respect to performance of cocoyam marketing in Southeast Nigeria. There is urgent need for empirical evidence on how well marketing of cocoyam have performed in terms of costs and margins associated with it for policy options.  The knowledge of institutional, technical and socio-economic factors that determine the supply of cocoyam as well as producers’ choice of marketing channels is essential for highlighting the leaking pipes. Similarly, examination of the effectiveness of various methods of storing cocoyam will show post harvest characteristics and losses across time. These are necessary for viability of cocoyam industry and for more commercialization of cocoyam enterprises in south east Nigeria. This will be the prime concern in any strategy for bridging the gaps in supply and demand for food and poverty alleviation for farmers, middlemen as well as consumers (Onu and Iliyasu, 2008).  1.6: LIMITATION OF THE STUDYThe study was carried out in South East Nigeria and specifically the markets with observed preponderance of cocoyam marketing.  Information collected includes input used and factors that determine the output as well as access to major markets. It was limited by data accuracy and poor records of their activities. Most of the values used or given were estimated on averages based on respondents. Sampling of states and major markets was based on consultation with chairman of various market associations. There were problems of inadequate or lack of incentives to respondents who needed immediate reward for giving information and taking their time. There was also problem of funding for this research work as this is not a funded research.  

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COCOYAM MARKETING IN SOUTH EAST NIGERIA


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