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Leveraging GIS in Supply Chain Management for floriculture Application: Nairobi County, Kenya

Journal of Geographic Information System 2019年第3期11卷 389-404页

作者： Catherine Akinyi Odera Faith Njoki Karanja Department of Geospatial and Space Technology University of Nairobi Nairobi Kenya

Agriculture continues to be the bedrock of Kenya’s economy at 24% of the GDP with 80% of the population living in the rural areas. Horticulture one of the sub-sectors in agriculture generates US$1 billion annually. The favorable weather provides an environment for the flower industry to thrive. However, flowers are a very delicate commodity and require appropriate management to minimize losses due to decay. A GIS based system is thus desirable to manage the flower chain from the supplier that is the farms, to distributors and eventually to the florists/consumers. The goal of this study therefore was to leverage the use of GIS in managing the supply chain for floriculture application using Nairobi County as a case study. One of the objectives addressed involved identification of optimal or alternative routes for efficient delivery of flowers from the source to the consumer using Network analysis. Ensuring that customers receive the right flowers in terms of quality and quantity was also addressed using Business Intelligence analysis. Trace analysis was done to provide information to the consumers on the source of the flowers and the growing conditions. From the case study, City Market acted as the link between the flower farms and the florists/consumers. The results obtained were presented using maps, graphs, pie charts and tables. The Central Business District (CBD) was found to be the largest purchaser compared to other regions and the months considered. Karen and CBD were the highest purchasers of Lilies whereas Ferns were preferred in Westlands. The CBD registered high level of satisfaction followed by Karen. Greenhouses and hydroponic methods were used for growing flowers resulting in variations in terms of vase life and stem length. GIS in SCM for floriculture application is useful in understanding the floriculture business environment.

关键词： GIS SCM floriculture Network Analysis Business Intelligent Analysis Trace Analysis

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Occupational Heat Stress in the floriculture Industry of Ethiopia: Health Risks and Productivity Losses

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Health 2022年第2期14卷 254-271页

作者： Belay Simane Abera Kumie Kiros Berhane Jonathan Samet Tord Kjellstrom Jonathan Patz College of Development Studies Addis Ababa University Addis Ababa Ethiopia School of Public Health Addis Ababa University Addis Ababa Ethiopia Mailman School of Public Health Columbia University New York NY USA Colorado School of Public Health Aurora CO USA University of Wisconsin-Madison Madison WI USA Health and Environment International Trust Mapua Nelson New Zealand

Background: The Ethiopian flower industry is growing fast with successful diversification of export products under greenhouse structures. Higher temperatures in the greenhouses pose a serious threat to the health of workers and add to the risk of occupational heat stress. Excessive heat in workplace settings also reduces work capacity and labour productivity. This study aims to investigate the level of heat exposure, and workers’ and managers’ perceptions and behavioural responses towards extreme heat exposure in a warming climate. Methods: We used the Wet Bulb Globe Temperature (WBGT) measured in representative greenhouses to capture the heat exposure during hotter and cooler seasons following ISO 7243 (generally risk of heat stress occurs when WBGT exceeds 26°C). A comparative cross-sectional study design with a stratified sampling method was used to assess occupational heat stress and workers’ perceptions of the impact of heat on their health and productivity in six different floriculture greenhouses in Ethiopia representing three different agro-ecologies and products. A questionnaire survey was conducted (30 managers/supervisors and 305 workers;76.1% female) to capture perceptions on heat exposures, symptoms of potential health impacts, productivity losses and coping mechanisms. Results: Heat exposure varied across different agroecologies, product types and greenhouse materials with a median WBGT Index of 25.5°C and a range from 18.1°C to 31.5°C. The impact of heat stress also varied across different employment sectors and geographical regions. Overall, workers in cut-flower greenhouses are exposed to higher than recommended WBGT Index (26°C) for 3 - 6 working hours daily. 65% of the managers reported that heat stress has a significant impact on the workers’ labour productivity, but do not have guidance about working in hot conditions. Workers reported more heat-related health issues and reduced productivity, especially in the mid-altitude greenhouses. About 50%

关键词： floriculture Heat Index Health Impacts Occupational Heat Stress Productivity Losses

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Correlation study of some physico-chemical parameters and benthic macroinvertebrates metrics on the ecological impacts of floriculture industries along Wedecha River, Debrezeit, Ethiopia

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Journal of Coastal Life Medicine 2017年第10期5卷 433-440页

作者： Sisay Misganaw Tamiru Seyoum Leta Asfaw Seyoum Mengistu Yilma Department of Development and Environmental Management Studies University of GondarPoBox 196GondarEthiopia College of Natural Science Environmental Science ProgramAddis Ababa UniversityP.O.Box 1176Addis AbabaEthiopia College of Natural Science Department of Zoological SciencesAddis Ababa UniversityP.O.Box 1176Addis AbabaEthiopia

Objective: To assess the quality of water using biological and chemical information correlation study. Methods: A total of 6 sites, one reference site less impaired to represent natural conditions from upstream, and 5 impaired sites in the downstream were sampled for macroinvertebrates and physicochemical parameters. Results: In the polluted sites with high nutrient enrichment and organic loading, only organisms with special physiological and morphological adaptations were found, such as Hydrobiidae, Physidae and Viviparidae snails. Physicochemical parameters: electrical conductivity, chemical oxygen demand, biological oxygen demand, sulphate, orthophosphate and nitrate-nitrogen and metrics: percent of Mollusca, percent of Physidae and percent of dominant taxa were used for monitoring, and expected to have strong positive relation with increasing disturbance. Conclusions: Therefore, floriculture industries wastewater discharged to the nearby rivers has enormous effect on the degradation of the ecosystem. To sustain the ecological conditions of the nearby rivers, wastewater treatment and environmental audit were suggested. Environmental assessment and environmental audit enable the floriculturist to keep humans and the environment safe. Taking care of workers, soil, water and the environment has to be seen with great care and caution because it is difficult to maintain a healthy community and carry out development in a degraded environment.

关键词： Macroinvertebrates Physicochemical Water quality floriculture Wastewater

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The genomic and bulked segregant analysis of Curcuma alismatifolia revealed its diverse bract pigmentation

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aBIOTECH 2022年第3期3卷 178-196页

作者： Xuezhu Liao Yuanjun Ye Xiaoni Zhang Dan Peng Mengmeng Hou Gaofei Fu Jianjun Tan Jianli Zhao Rihong Jiang Yechun Xu Jinmei Liu Jinliang Yang Wusheng Liu Luke RTembrock Genfa Zhu Zhiqiang Wu Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen518120China Guangdong Provincial Key Lab of Ornamental Plant Germplasm Innovation and Utilization Environmental Horticulture Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou510640China Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology Yunnan UniversityKunming650504China Guangxi Engineering and Technology Research Center for Woody Spices Guangxi Key Laboratory for Cultivation and Utilization of Special Non-Timber Forest CropsGuangxi Forestry Research InstituteNanning530002China Department of Agronomy and Horticulture University of Nebraska-LincolnLincolnNE68583USA Department of Horticultural Science North Carolina State UniversityRaleighNC27607USA Department of Agricultural Biology Colorado State UniversityFort CollinsCO80523USA Kunpeng Institute of Modern Agriculture at Foshan Foshan528200China

Compared with most flowers where the showy part comprises specialized leaves(petals)directly subtending the reproductive structures,most Zingiberaceae species produce showy“flowers”through modifications of leaves(bracts)subtending the true flowers throughout an *** alismatifolia,belonging to the Zingiberaceae family,a plant species originating from Southeast Asia,has become increasingly popular in the flower market worldwide because of its varied and esthetically pleasing bracts produced in different ***,we present the chromosome-scale genome assembly of ***“Chiang Mai Pink”and explore the underlying mechanisms of bract *** genomic analysis revealed *** contains a residual signal of whole-genome *** genes,including pigment-related genes,exhibit functional and structural differentiation resulting in diverse bract colors among *** *** addition,we identified the key genes that produce different colored bracts in ***,such as F3′5'H,DFR,ANS and several transcription factors for anthocyanin synthesis,as well as chlH and CAO in the chlorophyll synthesis pathway by conducting transcriptomic analysis,bulked segregant analysis using both DNA and RNA data,and population genomic *** work provides data for understanding the mechanism of bract pigmentation and will accelerate breeding in developing novel cultivars with richly colored bracts in *** and related *** is also important to understand the variation in the evolution of the Zingiberaceae family.

关键词： Anthocyanin synthesis Siam tulip floriculture Zingiberaceae Genome evolution

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Influence of sprinkler irrigation droplet diameter, application intensity and specific power on flower damage

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Frontiers of Agricultural Science and Engineering 2017年第2期4卷 165-171页

作者： Yisheng ZHANG Delan ZHU College of Water Resources and Architectural Engineering Northwest A&F University Institute of Water-saving Agriculture in Arid Areas of China Northwest A&F University

To determine the main parameters of droplet strike damage and avoid flower injury due to the unsuitable practices during sprinkler irrigation, an indoor experiment of irrigation droplet impact on cyclamen was *** influences of different parameters such as droplet diameter, application intensity, specific power on flower strike damage was analyzed using Image Pro-Plus software to compute strike damage area and define damage level by sense-analysis. The results showed that a damage area of 6%heavy damage level. Equations of application intensity,specific power with sprinkler irrigation time and flower injury ratio were regressed against parameters which cause impact damages. The results indicated that specific power has a significant correlation with injury, and flower damage area increased as the increasing of the value of specific power for the same irrigation time. Application intensity was also correlated with injury when the droplet diameter was larger than 1 mm. When the duration of sprinkler irrigation was 1, 5 and 10 min, the threshold of impinging damage of application intensity was 25.30, 5.01 and1.64 mm·h^(–1) and the specific power was 0.467×10^(–3),9.340×10^(–3) and 3.110×10^(–3)W·m^(–2). These results provide a reference for determining the suitable values of sprinkler properties in operation design.

关键词： application intensity damage floriculture flowers specific power sprinkler irrigation

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Chrysanthemum Growth Gains from Beneficial Microbial Interactions and Fertility Improvements in Soil Under Protected Cultivation

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Horticultural Plant Journal 2016年第4期2卷 229-239页

作者： Radha Prasanna Amrita Kanchan Simranjit Kaur Balasubramanian Ramakrishnan Kunal Ranjan Mam Chand Singh Murtaza Hasan Anil Kumar Saxena Yashbir Singh Shivay Division of Microbiology ICAR - Indian Agricultural Research Institute Centre for Protected Cultivation Technology (CPCT) ICAR - Indian Agricultural Research Institute Division of Agronomy ICAR - Indian Agricultural Research Institute

An investigation was undertaken to analyse the influence of microbial inoculants on growth and enzyme activities elicited, and soil microbiome of two varieties of Chrysanthemum morifolium Ramat, which were grown under protected mode of cultivation. Rhizosphere soil sampling at 45 and 90 DAT(days after transplanting of cuttings) revealed up to four- to five-fold enhancement in the activity of defence-, and pathogenesisrelated, and antioxidant enzymes, relative to the uninoculated control. Plant growth and soil microbial parameters, especially soil microbial biomass carbon and potential nitrification exhibited significant increases over control. Available soil nitrogen concentrations showed 40%–44% increment in inoculated treatments. Scanning electron microscopy of the root tissues revealed biofilm-like aggregates and individual short bits of cyanobacterial filaments. Analyses of DGGE profiles of archaeal and bacterial communities did not show temporal variations(between 45 and 90 DAT). However,distinct influences on the number and abundance of phylotypes due to microbial inoculants were recorded. The inoculants — Cyanobacterial consortium(BF1- 4) and Anabaena sp.–Trichoderma sp. biofilm(An-Tr) were particularly promising in terms of the plant and soil related parameters,and remained distinct in the DGGE profiles generated. The effect of Trichoderma viride–Azotobacter biofilm on soil bacterial and archaeal communities was unique and distinct as a separate cluster. This study highlights that microbial inoculants exert positive effects, which are specific even to the rhizosphere soil microbiome of chrysanthemum varieties tested. Such inoculants can serve as soil fertility enhancing options in protected floriculture.

关键词： microbial interaction biofilm cyanobacteria DGGE floriculture soil fertility

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