CONSUMER PREFERENCES AS DRIVERS OF THE COMMON BEAN TRADE IN TANZANIA: A MARKETING PERSPECTIVE

The objective of this study was to determine the impact of bean grain quality characteristics on market price. The data was collected from retail markets in Tanzania. Hedonic pricing provides a statistical estimate of premiums and discounts. Implications for development of bean markets include: i) extension agents should identify cost-effective ways to educate producers on targeting urban market niches based on consumer preferences for varieties, ii) breeding for bruchid resistant beans and use of appropriate storage technologies would alleviate the problems of storage damage, and iii) requiring a portfolio of grain quality characteristics to fit consumer preferences in local markets.Beans, markets, consumer preferences, hedonic, storage, Tanzania

CONSUMER PREFERENCES FOR QUALITY CHARACTERISTICS ALONG THE COWPEA VALUE CHAIN IN NIGERIA, GHANA AND MALI

The production and trade of cowpea (Vigna Uniculata), called “blackeyed peas” in the US, are a growing business for farmers and merchants serving the rapidly expanding urban areas of West and Central Africa. Cowpea fits the needs of the urban poor. It is an inexpensive source of protein that does not require refrigeration. A better understanding of consumer preferences for cowpea is essential to market development. The main objective of the study was to determine the cowpea grain quality characteristics that command a price premium or provoke a discount in Ghanaian, Malian and Nigerian markets. Specifically, the study looked at the impact of the grain size, texture, color, eye color, and bruchid-damaged grains on cowpea market prices. The data for the study were collected from six markets in Ghana; four markets were in the capital city of Accra and two markets in Kumasi. In Mali, two markets were surveyed, Marché de Sabalibougou and Marché Medine. In Nigeria three markets were surveyed, Iddo in Lagos; Monday, in Maiduguri; and Dawanau in Kano. Hedonic pricing methods provide a statistical estimate of premiums and discounts. The results of the study indicated that cowpea consumers in Ghana, Mali and Nigeria are willing to pay a premium for large cowpea grains. Cowpea consumers discount grains with storage damage from the very first bruchid hole. The impact of price on other cowpea quality characteristics such as skin color and texture, and eye color varies locally. Implications for development of the cowpea value chain include: 1) breeders and cowpea production researchers should identify cost-effective ways to increase cowpea grain size because larger grain size is almost universally preferred, and 2) entomologists and storage experts should develop and transfer improved storage technologies to reduce damage discounts, and 3) serving local markets requires a portfolio of grain skin color, eye color and skin texture combinations.Cowpeas market chains, consumer preference, hedonic price analysis

Farmer perception and valuation of seed quality: Evidence from bean and cowpea seed auctions in Tanzania and Ghana

Double blind field experiments and experimental auctions were conducted with bean and cowpea farmers in Tanzania and Ghana to gauge the relative demand for three types of seed products that differ in price and quality: certified, quality declared, and recycled. Whether the cost differential makes these seeds qualitatively different products as reflected in their perceived performance, and whether that translates into farmers’ willingness to pay price premiums, are the research questions addressed by this study. Results indicate that, all else equal, there were significant differences in the perceived quality of the seed products evaluated. Farmers were willing to pay significantly more for their higher rated seed relative to their lower rated seeds. However, for a majority of farmers the magnitude of the premium they are willing to pay for a higher quality seed is less than the current price differential between certified seed and grain. Research and policy implications of these results for legume seed system are discussed

Comparative performance of five hermetic bag brands during on-farm smallholder cowpea (Vigna unguiculata L.Walp) storage

Cowpea (Vigna unguiculata L. Walp) grain is an important source of protein for smallholder farmers in developing countries. However, cowpea grains are highly susceptible to bruchid attack, resulting in high quantitative and qualitative postharvest losses (PHLs). We evaluated the performance of five different hermetic bag brands for cowpea grain storage in two contrasting agro-ecological zones of Zimbabwe (Guruve and Mbire districts) for an 8-month storage period during the 2017/18 and 2018/19 storage seasons. The hermetic bag treatments evaluated included: GrainPro Super Grain bags (SGB) IVR™; PICS bags; AgroZ® Ordinary bags; AgroZ® Plus bags; ZeroFly® hermetic bags. These were compared to untreated grain in a polypropylene bag (negative control) and Actellic Gold Dust® (positive chemical control). All treatments were housed in farmers’ stores and were subjected to natural insect infestation. Hermetic bag treatments were significantly superior (p< 0.001) to non-hermetic storage in limiting grain damage, weight loss and insect population development during storage. However, rodent control is recommended, as rodent attack rendered some hermetic bags less effective. Actellic Gold Dust® was as effective as the hermetic bags. Callosobruchus rhodesianus (Pic.) populations increased within eight weeks of storage commencement, causing high damage and losses in both quality and quantity, with highest losses recorded in the untreated control. Cowpea grain stored in Mbire district sustained significantly higher insect population and damage than Guruve district which is ascribed to differences in environmental conditions. The parasitic wasp, Dinarmus basalis (Rondani) was suppressed by Actellic Gold Dust® and all hermetic treatments. All the hermetic bag brands tested are recommended for smallholder farmer use in reducing PHLs while enhancing environmental and worker safety, and food and nutrition security

Grain legumes trade and markets: Spatial and temporal analysis for common beans trade in Tanzania and its neighbors

Cross border trade of agricultural commodities between Tanzania and its neighbors remains active resulting in substantial volume of bean flow across the borders. If the trade in beans from Tanzania would result into net outflow then bean prices would rise in Tanzania limiting access to this source of cheap protein among the majority of Tanzanians. An Eastern and Southern Africa Bean Spatial and Temporal Equilibrium model was formed with Mixed Complementary Programming and was used to examine potential impacts of changes in (i) real interest rate, (ii) levels of non-tariff barriers, and (iii) levels of demand and supply on prices, volume and direction of common bean (Phaseolus vulgaris L.) trade between Tanzania and its neighbors Uganda, Zambia, Kenya, Rwanda, Burundi, DR Congo, Malawi and Mozambique. Three regional blocs were used in modeling the policy scenarios - namely the COMESA, SADC and EAC. Bean production and market data for years between 1995 and 2003 were used for analysis. It was found that adopting a real interest rate of 10% did not increase the volume of bean trade between Tanzania and its neighbors as was hypothesized. Elimination of non-tariff barriers was found to have a positive impact to the welfare of bean producers and traders but did not have a significant impact on boosting beans supply in the region. However elimination of all non-tariff barriers in all of the countries increased bean trade between Tanzania and its neighbors by over 30%. Increasing bean supply in the region by 10% resulted in a decrease in consumer demand price in Zambia of about 27% which was more than twice what was hypothesized. Lowering transportation cost by 10% did not create a significant change in the volume of beans traded in the region. From the findings, it is evident that any policy formulation aimed at promoting bean trade and markets between Tanzania and its neighbor should target elimination of non-tariff barriers to trade either among COMESA member countries, SADC member countries and/or the EAC member countries. Elimination of non-tariff barriers in all countries would promote beans trade most

Consumer preferences as drivers of the common bean trade in Tanzania: A marketing perspective

The objective of this study was to determine the impact of bean grain quality characteristics on market price. The data was collected from retail markets in Tanzania. Hedonic pricing provides a statistical estimate of premiums and discounts. Implications for development of bean markets include : i) extension agents should identify cost-effective ways to educate producers on targeting urban market niches based on consumer preferences for varieties, ii) breeding for bruchid resistant beans and use of appropriate storage technologies would alleviate the problems of storage damage, and iii) requiring a portfolio of grain quality characteristics to fit consumer preferences in local markets