Variation of Loranthaceae impact on<i>Vitellaria paradoxa</i>C. F. Gaertn. fruit yield in contrasting habitats and implications for its conservation

Houéhanou, Thierry D.; Kindomihou, Valentin; Stévart, Tariq; Tenté, Brice; Houinato, Marcel; Sinsin, Brice

doi:10.1051/fruits/2013057

Cited by 11 publications

(7 citation statements)

References 25 publications

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“…Research efforts have addressed issues of reproduction and management through tree nurseries [ 17 ], but the dissemination of such techniques is still lacking. In view of the improvements to the productivity and quality of shea tree resources, grafting trials were performed and showed potential to enhance the proliferation of desirable genotypes and reduce the length of the juvenile life stage[ 11 , 18 ], juvenile life stage that varies between 15 and 20 years under natural conditions. Fruit production typically commences at 20 years of age, but production is not maximized until 40 to 50 years of age[ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Shea (Vitellaria paradoxa Gaertn C. F.) fruit yield assessment and management by farm households in the Atacora district of Benin

et al. 2018

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Vitellaria paradoxa (Gaertn C. F.), or shea tree, remains one of the most valuable trees for farmers in the Atacora district of northern Benin, where rural communities depend on shea products for both food and income. To optimize productivity and management of shea agroforestry systems, or "parklands," accurate and up-to-date data are needed. For this purpose, we monitored120 fruiting shea trees for two years under three land-use scenarios and different soil groups in Atacora, coupled with a farm household survey to elicit information on decision making and management practices. To examine the local pattern of shea tree productivity and relationships between morphological factors and yields, we used a randomized branch sampling method and applied a regression analysis to build a shea yield model based on dendrometric, soil and land-use variables. We also compared potential shea yields based on farm household socio-economic characteristics and management practices derived from the survey data. Soil and land-use variables were the most important determinants of shea fruit yield. In terms of land use, shea trees growing on farmland plots exhibited the highest yields (i.e., fruit quantity and mass) while trees growing on Lixisols performed better than those of the other soil group. Contrary to our expectations, dendrometric parameters had weak relationships with fruit yield regardless of land-use and soil group. There is an inter-annual variability in fruit yield in both soil groups and land-use type. In addition to observed inter-annual yield variability, there was a high degree of variability in production among individual shea trees. Furthermore, household socioeconomic characteristics such as road accessibility, landholding size, and gross annual income influence shea fruit yield. The use of fallow areas is an important land management practice in the study area that influences both conservation and shea yield.

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Section: Introductionmentioning

confidence: 99%

Shea (Vitellaria paradoxa Gaertn C. F.) fruit yield assessment and management by farm households in the Atacora district of Benin

et al. 2018

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“…The fruits are harvested around May until September, coinciding with the rainy season [5]. The genetic variability of shea is noted to be high [7,8,[11][12][13][14] and there is no tradition of planting trees, as shea is highly effective in propagating itself in this environment. Recent work, however, with micro-propagation, rooting cuttings and grafting may allow opportunities to formally domesticate and enrich parklands through selection and planting of more productive shea trees [15][16][17][18].…”

Section: Shea Tree As a Traditional Crop And Domestic Commoditymentioning

confidence: 99%

The Evolution of Shea Butter's "Paradox of paradoxa" and the Potential Opportunity for Information and Communication Technology (ICT) to Improve Quality, Market Access and Women's Livelihoods across Rural Africa

Bello‐Bravo

Lovett²,

Pittendrigh

2015

Sustainability

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Shea trees grow across 4 million km 2 of sub-Saharan Africa. Shea parklands provide a sustainable source of edible fat (shea butter) that, in terms of volume, is currently second only to cocoa butter as a vegetal source of stearic acid in the multi-billion dollar chocolate and cosmetic sectors. However, in terms of international trade, shea has been opaque to consumers of edible products (where the majority of shea exports end their global journey) and actually only well-known in western markets as a cosmetic ingredient. The millions of women collectors have been disconnected from global supply chains, as the majority of their sheanuts are factory processed, supplied by traders who, in many cases, do not understand quality issues nor share knowledge with their village-based collectors-this is the "Paradox of paradoxa". This review provides the background to this issue by contextualizing the industry and describing how weak post-harvest quality control impacts the shea supply chain. The paper then explains how this knowledge was incorporated into a 3D animation available for free transmission to rural African audiences and viewing on portable devices like video capable mobile phones. This tool offers the OPEN ACCESSSustainability 2015, 7 5753 potential of low-cost multiple benefits to users, which we term here a win-cubed [win 3 ] opportunity, where women collectors can receive free knowledge of using less resources to produce higher quality shea kernels which in turn offer higher extraction yields, lowering production costs, of a better and more marketable product.

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“…Les travaux d 'Ondoua et al (2014) dans les cacaoyères du sud-Cameroun, de Fotso et al (2014) dans les jardins de case de l' Ouest-Cameroun, et ceux d'Azo'o et al (2013) dans les forêts de Lokomo, avaient quant à eux montré P. capitata comme espèce domminante. Toutefois, cette espèce est faiblement retrouvée en zone soudano-sahélienne dans les plantations d'agrumes, de karité, ou de Légumineuses (Soro et al, 2009 ;Houenon et al, 2012 ;Houéhanou et al, 2013). Les résultats observés indiqueraient que la zone d'étude remplirait les conditions climatiques favorables pour le développement d'H.…”

Section: Discussionunclassified

Parasitisme des Loranthaceae sur Theobroma cacao L. (Malvaceae) dans l’arrondissement de Tombel (Sud-Ouest Cameroun)

Biyon¹,

Iyodi²,

Tchoue³

et al. 2022

Int. J. Bio. Chem. Sci

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Au Cameroun, les Loranthaceae ont été signalées dans quelques bassins de production du cacao. Cette étude a été menée dans le but de caractériser le parasitisme des cacaoyers de la localité de Tombel, au Sud-Ouest Cameroun. Les observations des Loranthaceae ont porté sur les arbres âgés de 8 à 10 ans, et sur une superficie de 7500 m². Sur chaque pied de cacaoyer, les données suivantes ont été collectées et notés : la circonférence à 1,30 m du sol , la hauteur, le nombre de branches, les espèces de Loranthaceae présentes, et le nombre de touffes des parasites. Au total, quatre espèces de Loranthaceae ont été recensées sur les cacaoyers, Helixanthera mannii étant la plus fréquente. Le taux de parasitisme des plantations était de 35,33% et la densité parasitaire moyenne était de 3±2 touffes/arbre. Les arbres parasités ont montré des circonférences et des hauteurs significativement plus élevées que les arbres sains. Le coefficient de rang de Spearman a montré une corrélation positive et significative entre la hauteur de l’arbre et le nombre de touffes des Loranthaceae. Il s’avère donc nécessaire de mettre en place un programme de contrôle des Loranthaceae dans les plantations afin de réduire les pertes de production, mais également de mener une étude approfondie sur la biologie et l’écologie d’ Helixanthera mannii qui, dans le futur, pourrait s’avérer être une menace pour les cacaoyers. In Cameroon, Loranthaceae have been reported in some cocoa production basins. This study was conducted to characterise the parasitism of cocoa trees in the locality of Tombel, South-West Cameroon. Observations of Loranthaceae were made on trees 8 to 10 years old, and on an area of 7500 m². On each cocoa tree, the following data were collected and recorded: circumference at 1.30 m from the ground, height, number of branches, Loranthaceae species present, and number of pest clumps. In total, four species of Loranthaceae were recorded on cocoa trees, Helixanthera mannii being the most frequent. The parasitism rate of the plantations was 35.33% and the average parasite density was 3±2 clumps/tree. Parasitised trees showed significantly higher girths and heights than healthy trees. Spearman's rank coefficient showed a significant positive correlation between tree height and the number of Loranthaceae clumps. It is therefore necessary to set up a control programme for Loranthaceae in plantations in order to reduce production losses, but also to carry out an in-depth study on the biology and ecology of Helixanthera mannii, which could prove to be a threat to cocoa trees in the future.

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Variation of Loranthaceae impact onVitellaria paradoxaC. F. Gaertn. fruit yield in contrasting habitats and implications for its conservation

Abstract: Variation of Loranthaceae impact on Vitellaria paradoxa C. F. Gaertn. fruit yield in contrasting habitats and implications for its conservation.

Cited by 11 publications

References 25 publications

Shea (Vitellaria paradoxa Gaertn C. F.) fruit yield assessment and management by farm households in the Atacora district of Benin

Shea (Vitellaria paradoxa Gaertn C. F.) fruit yield assessment and management by farm households in the Atacora district of Benin

The Evolution of Shea Butter's "Paradox of paradoxa" and the Potential Opportunity for Information and Communication Technology (ICT) to Improve Quality, Market Access and Women's Livelihoods across Rural Africa

Parasitisme des Loranthaceae sur Theobroma cacao L. (Malvaceae) dans l’arrondissement de Tombel (Sud-Ouest Cameroun)

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