Browsing by Author "Mwine T. Julius"

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Farmer-based dynamics in tissue culture banana technology adoption: a socio-economic perspective among small holder farmers in Uganda
(Academic Journals, 2018-12-13) Murongo Marius Flarian; Wangai K. John; Mwine T. Julius; Ayuke O. Frederick
The rates at which tissue-culture banana technology at smallholder farmer level in Uganda are adopted have reduced since the late 1990s. The study assessed the socio-economic factors influencing adoption of this technology by smallholder farmers. A survey on 280 smallholder farmers sampled from Western Uganda was conducted and responses were subjected to principal component analyses. There are evidences of very low levels of adoption of the tissue culture banana technology. There is a mix between households that completely reject tissue culture banana technology, and others growing diminutive amounts of tissue culture bananas alongside non-tissue culture banana varieties. The scale of production and productivity of non-tissue banana varieties significantly exceeds that of tissue culture bananas (83%: 17%). While expected yield from a banana production technology is a precursor to its adoption, demographic and management characteristics shape the practices that enhance the yield of tissue culture banana technology (p ≤ 0.05) and subsequent decision to adopt or reject tissue culture banana technology. A systems-wide approach is needed to develop mechanisms that would stimulate smallholder farmers to adopt the technology in order to realize the immense potential of tissue-culture banana technology.
Spatio-temporal distribution of banana weevil Cosmopolites Sordidus [Germar] and nematodes of various genera in Uganda: A case of smallholder banana orchards in Western Uganda
(Academic journals, 2019-05-07) Murongo M. Flarian; Ayuke O. Frederick; Mwine T. Julius; Wangai K. John
Smallholder farmers’ banana orchards in Western Uganda were used to study the spatio-temporal factors influencing the distribution of banana weevils and parasitic nematodes in tissue culture and non-tissue culture banana types using Nested case control design. Nematodes were extracted from randomly collected composite banana root samples from 20 banana orchards. The banana weevils were trapped in the rainy and dry seasons. A total of 1,280 banana genets were surveyed to determine weevil and nematode densities. Interactions between season and locations with high banana weevils and nematodes densities significantly negatively influenced the distribution of tissue culture and non-tissue culture banana in space and time. Both tissue culture and conventional bananas are prone to banana weevil and nematode infestations. Infestation with weevils and nematodes were higher for tissue culture banana in the dry season. Kiruhura district had a higher density for banana weevils (Cosmopolites sordidus [germar]) while Ibanda district had higher nematode densities. Helicotylenchus multicinctus and Radopholus similis were found most prevalent. This knowledge is not only important in shaping the adoption and sustenance of the adopted banana types, but also can form a basis for developing affordable strategies to lower the occurrence of banana weevil and nematodes below the threshold level in smallholder banana farms of Uganda.
Why do Euphorbiaceae tick as medicinal plants? A review of Euphorbiaceae family and its medicinal features
(Academic Journals, 2011) Mwine T. Julius; Damme Van Patrick
Euphorbiaceae is among the large flowering plant families consisting of a wide variety of vegetative forms some of which are plants of great importance. Its classification and chemistry have of late been subjects of interest possibly because of the wide variety of chemical composition of its members, many of which are poisonous but useful. In this review, we have tried to demonstrate why Euphorbiaceae are important medicinal plants. Two important issues have come up. The worldwide distribution of the family exposes its members, to all sorts of habitats to which they must adapt, therefore inducing a large variety of chemicals (secondary substances) that are employed for survival/defense. Succulence and the CAM (crassulacean acid metabolism) pathway that characterize a good number of its members were quoted as some of the adaptations that aid colonization and survival to achieve this induction. We have also found out that medicinal properties of some of its species may be due to stress factors that characterize most habitats of the family. Varying stress factors like temperature, salinity, drought and others were seen to operate in tandem with genetic factors such as gene expression and mutation loads to bring about synthesis of a wide assemblage of secondary substances that may probably be responsible for the family’s medicinal nature. It was concluded that the family is a good starting point for the search for plant-based medicines.