检索结果-南通市图书馆

American Journal of Climate Change 2020年第1期9卷 1-10页

作者： Fatou Bojang Seydou Traore Adama Togola Yacouba Diallo institut polytechnique rural de formation et de recherches appliquées Katibougou Mali Centre Regional de formation et d’Application en Agrométéorologie et Hydrologie Opérationnelle (AGRHYMet) Niger

Lowland rice production is highly vulnerable to extreme temperature as a result of climate change. The study analyses farmer’s perception about climate change, management practice and their on-farm adoption strategies at the rice fields of Sapu and Kuntaur study location. The selected villages were the main rice production area, where rice is a monoculture crop. Focus group discussion was held with twenty rice growing farmers at Sapuand Kuntaur, and these were divided into five groups. Personal interview and key informant involves the two village head, two youth development chairpersons (VDC) and the extension worker overseeing both villages. This was done to gain in-depth knowledge on the subject matter. The analysis results indicated that more than 50% of the rice growing farmers were female and do not undergo formal education. More than 70% of them having perceived knowledge on the causes of climate change, inorganic fertilizer use, transplanting of rice seedlings, use of improved rice varieties, and on-farm coping strategies such as changing of cropping calendar and the use of pesticides to cope with current and future climate situation.

关键词： Perception Climate Change Management Strategies Adoption Strategies

Identification of pests and assessment of their damage on Carapa procera and Lophira lanceolata in Burkina Faso,West Africa

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2017年第3期28卷 585-591页

作者： Baslayi Tindano Olivier Gnankine Amade Ouedraogo Mamadou Traore Jφrgen Axelsen Anne Mette Lykke Unite de formation et de Recherche en Sciences de la vie et de la Terre Laboratoire d'Entomologie Fondamentale et AppliqueeUniversite de Ouagadougou03 BP 7021 OuagadougouBurkina Faso Unite de formation et de Recherche en Sciences de la vie etde la Terre Laboratoire de Biologie et Ecologie VegetalesUniversite de Ouagadougou03 BP 7021 OuagadougouBurkina Faso INERA Institut de l'Environnement et de Recherches Agricoles01 BP 476 Ouagadougou 01Burkina Faso department of Bioscience Aarhus UniversityAarhusDenmark

Nontimber forest products are a source of income for women in rural African communities. However, these products are frequently damaged by insect pests. The present study investigates the diversity and damage rates of insect pests that attack Carapa procera seeds and Lophira lanceolata fruits. The experiment was set up in western Burkina Faso and, for C. carapa, consisted of pests collected from seeds that had fallen to the ground and from stockpiled seeds. For L. lanceolata, pests were collected from fruits on the trees, and on the ground. The collected samples were sent to the laboratory to estimate the proportion of damaged seeds/fruits and rear the insects. The results showed that Ephestia spp., Tribolium castaneum, Oryzeaphilus spp., and Tenebroides mauritanicus were the pests of Carapa procera seeds and Lophira lanceolata fruits. Ephestia spp. was recorded as the main pest of both C. proeera and L. lanceolata, whereas T. castaneum was only detected from seeds of L. lanceolata. For C. procera, the stocks were the most infested （29 %） by Ephestia spp. The infestation rate of fruits of L. lanceolata by Ephestia spp, on trees （31.42 ± 3.75 %） was less than the rate of fruits by T. castaneum on the ground （44.00 ± 3.5 %）. The different body sizes of Ephestia spp. may indicate the occurrence of two putative species, one from C. procera and another one from L. lanceolata. This work provides important information that could contribute to the setting up of a local-scale sustainable management framework for oil tree pests in Burkina Faso and surrounding countries.

关键词： Insect diversity Carapa procera Lophiralanceolata Ephestia spp. Pest management

deep learning methods for biotic and abiotic stresses detection and classification in fruits and vegetables:State of the art and perspectives

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Artificial Intelligence in Agriculture 2023年第3期9卷 46-60页

作者： Sèton Calmette Ariane Houetohossou Vinasetan Ratheil Houndji Castro Gbêmêmali Hounmenou Rachidatou Sikirou Romain Lucas Glele Kakaï Laboratoire de Biomathématiques et d'estimations Forestières Faculty of Agronomic SciencesUniversity of Abomey-Calavi04 BP 1525CotonouBenin institut de formation et de Recherche en Informatique University of Abomey-Calavi01 BP 526CotonouBenin Laboratoire de Défense des Cultures Centre de Recherches Agricoles d'AgonkanmeyInstitut National des Recherches Agricoles du Bénin(INRAB)01 BP 884CotonouBenin

deep Learning(DL),a type of Machine Learning,has gained significant interest in many fields,including *** paper aims to shed light on deep learning techniques used in agriculture for abiotic and biotic stress detection in fruits and vegetables,their benefits,and the challenges faced by *** papers were collected from Web of Science,Scopus,Google Scholar,Springer,and Directory of Open Access Journals(DOAJ)using combinations of specific keywords such as:’deep Learning’OR’Artificial Intelligence’in combination with fruit disease’,vegetable disease’,‘fruit stress',OR‘vegetable stress'following PRISMA *** the initial 818 papers identified using the keywords,132 were reviewed after excluding books,reviews,and the *** recovered scientific papers were from 2003 to 2022;93%addressed biotic stress on fruits and *** most common biotic stresses on species are fungal diseases(grey spots,brown spots,black spots,downy mildew,powdery mildew,and anthracnose).Few studies were interested in abiotic stresses(nutrient deficiency,water stress,light intensity,and heavy metal contamination).deep Learning and Convolutional Neural Networks were the most used keywords,with GoogleNet(18.28%),ResNet50(16.67%),and VGG16(16.67%)as the most used ***-two percent of the data used to compile these models come from the fields,followed by data obtained *** problems due to unbalanced classes and the small size of some databases were also *** provided the research gaps and some perspectives from the reviewed *** research works are required for a deep understanding of the use of machine learning techniques in fruit and vegetable studies:collection of large datasets according to different scenarios on fruit and vegetable diseases,evaluation of the effect of climatic variability on the fruit and vegetable yield using AI methods and more abiotic stress studies.

关键词： deep learning Prediction Fruits Vegetables Stress Agricultural yield

Molecular Identification and Characterization of a Begomovirus Associated with Okra Enation Leaf Curl Disease in Mali

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Bioscience and Biotechnology 2023年第10期14卷 429-438页

作者： Gaoussou K. Keita Laya Kansaye Lassina Doumbia Ibrahim Keita Mariam Sangare Tidiani Sinayoko Boubacar Macalou Moussa Noussourou Maiga Nadou Paul Sanogo Ousmane Koita institut polytechnique rural de formation et de Recherche appliquée (IPR/IFRA) de Katibougou Koulikoro Mali Université des Sciences des Techniques et des Technologies de Bamako (USTTB) de Bamako Laboratoire de Biologie Moléculaire Appliquée (LBMA) Bamako Mali institut Economie rural (IER) Bamako Mali

Okra is one of the most widespread vegetable crops in the world, particularly in West Africa. However, several factors influence okra crops as biotic and abiotic factors. Among the diseases affecting its culture, okra leaf curl disease is a major threat. This study aims to assess begomoviruses from okra plants with symptoms like leaves curl by molecular approach. A total of thirteen serologically positive samples were tested by PCR assay, and one sample was sequenced among them. The begomovirus was found in six isolates, Bhendi yellow vein mosaic virus (BYVMV) in three isolates, and Okra enation leaf curl virus (OELCuV) in three isolates, respectively. The begomovirus isolate sequences shared 90% identity with the Cotton leaf curl Gezira virus. Mixed infections between these viruses were found. Thus, these results highlight the need to monitor the spread of these disease-causing viruses for okra crops in Mali. In addition, they can also lead to a considerable loss in okra fields in Koulikoro, which is an agricultural region by excellence.

关键词： Okra PCR Begomovirus BYVMV OELCuV Mali

Structured Imagery Processing Strategies for Spectroscopic Measurement in dense Solutions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2017年第6期7卷 262-281页

作者： Thomas Koffi Guy-Oscar Regnima Jocelyne Bosson Olivier Bagui Mensah Edoé Jérémie T. Zoueu Laboratoire d’Instrumentation Image et Spectroscopie(L2IS) Institut National Polytechnique Felix Houphou&euml t-Boigny Departementde Formation et de Recherche du Genie Electrique et Electronique Yamoussoukro C&ocirc te d’Ivoire Laboratoire de physique Fondamantale appliquée(LPFA) Université NanguiAbrogoua Unité de Formation et de Recherche des Sciences Fondamentales Appliquées Abidjan C&ocirc te d’Ivoire

Absorbance measurement in dense media via conventional optical spectroscopy techniques leads to inaccurate results. This is mainly due to multiple scattering phenomena that contribute to the overall light extinction in the interrogated sample. This limitation imposes the use of dilute solutions for absorption spectroscopy. However, depending on the polarity of the solvent used, the absorption spectrum may vary over a given solution. Structured illumination technique offers an alternative to this problem, and provides the ability to calculate in-situ optical properties in dense media. In this paper, we propose two processing methods applied to images acquired by structured laser illumination planar imaging (SLIPI) technique to extract extinction coefficients μ_e of probed solutions: The first is based on the implementation of principal component analysis (PCA) and the second, on the calculation of Mean Value. In practice, two kinds of studies were carried out: one quantitative set of measurements within chlorophyll liquid solutions and a second set with concentrated coffee solutions, with controlled proportion and concentrations for each sample. These two proposed analytical techniques are advantageous because they are very easy to implement and provide a much simpler alternative to the previous one. Both methods offer satisfactory results, similar to those obtained with the original method which is based on 1D Fourier transform.

关键词： Spectrophotometry dense Media Extinction Coefficient Structured Illumination Principal Component Analysis

Inventory and Distribution of Mango Mealybugs Species in Western Burkina Faso: Relative Abundance and Population Fluctuation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Entomology 2016年第3期4卷 191-199页

作者： Karim Nébié Souleymane Nacro Issoufou Ouédraogo Dona Dakouo Lenli Claude Otoidobiga institut de l’Environnement et de recherches Agricoles (INERA) Direction Régionale de Recherches Environnementales et Agricoles de l’Ouest (DRREAO) Station de Farako-Ba Bobo-Dioulasso Burkina Faso institut de l’Environnementet de recherches Agricoles (INERA) Centre Régional de Formation et de Recherches Environnementales et Agricoles de Kamboinsé Ouagadougou Burkina Faso

Rastrococus invadens was the only reported mealybug species on the mango tree in Western Burkina Faso. This study aimed at carrying out the inventory and showing the importance and distribution of other mealybug species associated with the mango tree. It was also important to determine the periods of abundance of these species vis-a-vis R. invadens. For this purpose, the density of mealybugs was assessed in three study sites (Toussiana, Bérégadougou and Orodara) in Western Burkina Faso. The observations were made from June 2014 to June 2015 at a frequency of 15 ± 1 days. They focused on 20 leaves (5 leaves/cardinal point) levied on each mango tree. The species identified as Ferrisia virgata Cockerell and Icerya aegyptiaca Douglas were collected from mangos infested by R. invadens representing 98% - 99% of the density of the observed mealybug species. The periods of abundance of F. virgata and I. aegyptiaca were respectively the dry season and the rainy season. The effect of temperature, relative humidity and rainfall on the populations of F. virgata and I. aegyptiaca was also discussed. These results highlight the distribution range of F. virgata and I. aegyptiaca worldwide including Burkina Faso. R. invadens was the main mealybug species on mango in Burkina Faso in general and in the Western region of the country in particular.

关键词： Mango Mealybugs Rastrococus invadens Ferrisia virgata Icerya aegyptiaca

维普期刊数据库

Use of Fluorescence and Reflectance Spectra for Predicting Okra (<i>Abelmoschus esculentus</i>) Yield and Macronutrient Contents of Leaves

在线全文

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2017年第10期7卷 537-558页

作者： Wilfried G. Dibi Jocelyne Bosson Irié Casimir Zobi Bi Tra Tié Jérémie T. Zoueu Laboratoire d’Instrumentation Image et Spectroscopie Unité Mixte de Recherche et d’Innovation en Electricité et Electronique Appliquées Ecole Supérieure d’Industrie Institut Nationale Polytechnique Houphouet-Boigny Yamoussoukro C&ocirc te d’Ivoire Laboratoire de Physique Fondamentale et appliquée Unité de Formation et de Recherche en Sciences Fondamentales et Appliquées Université Nangui Abrogoua Abidjan C&ocirc te d’Ivoire Laboratoire de Pédologie Ecole Supérieure d’Agronomie Institut Nationale Polytechnique Houphouet-Boigny Yamoussoukro C&ocirc te d’Ivoire

In-field proximal sensing of most major crops nutrients still remains an economical and technical challenge. For this purpose, the use of effective multi-excitation fluorescence and reflectance wavelengths is explored in this work on Okra plant. Visible-near infrared (400 - 1000 nm) reflectance and multi-fluorescence data were collected at leaf scale in a chemically fertilized field by using an USB spectrometer mounted with an Arduino-based LED driver clip. N, P, K and Ca content of samples leaves were measured using reference methods. Average pods yield and leaves macronutrients content were calibrated using IRIV-PLS regression after spectra pretreatments. Single informative wavelengths bands in reflectance, red and far-red fluorescences were selected for building yield and macronutrient content models. We showed that flowering stage was more suitable for yield prediction. Moderately useful macronutrient models were found in Ca content (RPDval = 1.93, rP = 0.818) and potassium content with RPDval = 1.8, rP = 0.88. P and N yielding prediction performance of RPDval = 1.61 (rP = 0.718 ) and RPDval = 1.46 (rP = 0.56) respectively were less accurate. This study demonstrates potentiality of fluorescence and reflectance spectroscopy for accurate estimation of leaf macronutrient content and crop yield. High selectivity obtained from resulted spectral bands could lead to the development of reliable, rapid and cost-effective devices for nutrient diagnosis.

关键词： Proximal Sensing Fluorescence and Reflectance Fertilized Field Macronutrients Content Pods Yield

Ecology of the African Rice Gall Midge, <i>Orseolia oryzivora</i>(Diptera: Cecidomyiidae) in Western Burkina Faso, West Africa

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Entomology 2020年第1期8卷 1-14页

作者： delphine Ouattara Souleymane Nacro Kossi Latévi Adama Coulibaly Irénée Somda institut de l’Environnement et de recherches Agricoles (INERA) Station de Recherche de Farako-Ba Bobo Dioulasso Burkina Faso institut de l’Environnement et de recherches Agricoles (INERA) Centre Régional de Formation et de Recherches Environnementales et Agricoles de Kamboinsé Ouagadougou Burkina Faso Université Nazi Boni Bobo Dioulasso Burkina Faso

The African rice midge, Orseolia oryzivora H. & G., is an important insect pest in Burkina Faso. Our study was conducted from 2017 to 2019 in three irrigated rice schemes including Banzon, Karfiguéla and Vallée du Kou in Western Burkina Faso. The objective of this study was to investigate the ecology of the insect pest. In each rice scheme, four plots of 500 m2 each, spread 50 m apart were randomly selected in farmers’ fields and used for the study. In each plot, a light trap was implemented along one of the diagonals of the plot. Each light trap consisted of a yellow plastic round bowl containing soapy water almost at half the bowl and a torch. The bowl had a capacity of 4.5 l, a diameter of 28 cm and a height of 10.5 cm. The torch had 3 batteries of 1.5 V each, 30 cm long and 1 cm diameter. The torches were lit every night at 6 pm and off at 6 am. Four hundred tillers were collected per month from the cultivated rice and from each of the alternative hosts of the rice midge in order to evaluate the monthly gall count, pre-imaginal populations and parasitism associated with O. oryzivora and its cousin, O. bonzii that is hosted by Paspalum scrobiculatum. The number of O. oryzivora’s adults caught in the light traps was higher during the wet season than the dry season. The level of larval parasitism ranged from 6.16% (Banzon) to 14.29% (Vallée du Kou). The highest level of pupal parasitism (13.73%) was recorded in Vallée du Kou. The damage of O. oryzivora was observed on the wild rice species, O. longistaminata in all three sites. The highest levels of parasitism associated with O. bonzii were recorded in Karfiguéla (20.08% and 25.21% for larval parasitism and pupal parasitism, respectively). These findings are useful in the development of a sustainable control strategy of O. oryzivora.

关键词： Rice Oryza sativa Oryza longistaminata Orseolia oryzivora Alternative Host Plants Paspalum scrobiculatum Orseolia bonzii Burkina Faso

Effectiveness of Four Integrated Pest Management Approaches in the Control of Fruit Flies (Diptera: Tephritidae) in Mango Agro-Ecosystems in the South-Sudanian Zone of Burkina Faso

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Entomology 2023年第3期11卷 124-142页

作者： Issaka Zida Karim Nébié Alizèta Sawadogo Boureima Tassembédo Timothée Kiénou Rémy A. Dabiré Souleymane Nacro Centre National de la Recherche Scientifique et Technologique Institut de l’Environnement et de Recherches Agricoles Direction Régionale de Recherches Environnementales et Agricoles de l’Ouest Station de Farako-Ba Bobo-Dioulasso Burkina Faso Ecole Nationale de formation Agricole de Matourkou Bobo-Dioulasso Burkina Faso Centre National de la Recherche Scientifique et Technologique Institut de l’Environnement et de Recherches Agricoles Centre de Recherches Environnementales Agricoles et de Formation Station de Kamboinsé Ouagadougou Burkina Faso

This study evaluated the effectiveness of four Integrated Pest Management (IPM) approaches in the control of Bactrocera dorsalis (Hendel) [Diptera: Tephritidae] and Ceratitis cosyra (Walker) [Diptera: Tephritidae] during two consecutive mango fruiting seasons (2018 and 2019) in the south-Sudanian zone of Burkina Faso. These approaches, including sanitation + M3 bait station (SM), sanitation + protein GF-120 bait (SG), sanitation + Timaye + M3 bait station (STM) and sanitation + Timaye + GF-120 bait (STG), were implemented in 12 mango orchards in three provinces of the country. In each province, one mango orchard was used as control. Flies per trap per week (FTW) and damage indices were assessed in treated orchards compared to the control orchards. The efficacy rate of each IPM approach in protecting mango against fruit fly attacks was also determined. The STG approach was the most effective in reducing both B. dorsalis and C. cosyra FTW with the best efficacy rate. Further research should emphasize indigenous and affordable attract-and-kill tools for resource poor farmers.

关键词： Bactrocera Ceratitis Control IPM Mango Burkina Faso

Assessing the Effects of Land Use/Land Cover Change on Groundwater Recharge in a Sudano-Sahelian Zone: Case of Koda Catchment, Mali, West Africa

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2022年第8期10卷 39-54页

作者： Oumou Diancoumba Adama Toure Ibrahima Daou Seriba Konare Taoufik Hermassi Mohamed Kotti Hamadoun Bokar Nourredine Galoul Zoubeida Bargaoui Ecole Normale Supérieure de Bamako (ENSup) Département Sciences de la Vie et de la Terre (DER-SVT) Bamako Mali Ecole Nationale d’Ingénieurs Abderrahmane Baba Touré (ENI-ABT) Bamako Mali institut polytechnique rural de formation et de Recherche appliquée de Katibougou (IPR/IFRA de Katibougou) Koulikoro Mali institut National des recherches en Génie rural Eau et Forêts (I.N.R.G.R.E.F) Tunis Tunisie Ecole Nationale d’Ingénieurs de Tunis ENIT Tunis Tunisie

Groundwater is the main source of water in the studied area;therefore, it is significantly requested in all the activities of the inhabitants. These natural resources are affected by some drivers especially Land Use/Land Cover (LULC) and Climate Change. A Land Use/Land Cover (LULC) dynamics study is crucial for any global environmental change evaluation. For instance, for a given place, its change could affect considerably water cycle components. Therefore, the knowledge of the effects of LULC on groundwater recharge is then the key in water resources management system, in particular for the decision makers of the Koda Catchment where the scarcity of the water availability for agriculture is real. The spatiotemporal variation of the different units of LULC present in the catchment has been examined in this study. The Envi 4.5 Software coupled with ArcGIS using the Supervised Classification method, was applied to subset Landsat images from 1990 to 2016. Five (5) major LULC categories, cultivated land, bare land, herbaceous savannah, shrubby savannah and degraded savannah, were identified in the catchment. In a parallel direction, the groundwater recharge has been estimated through the conceptual Gardenia model for the same period 1990-2016. The results showed that the portion of cultivated land and bare land increased (14.9% and 23.5% respectively) while, the portion of savannah decreased: herbaceous savannah by 24.4%, degraded savannah by 10.32% and Shrubby Savannah by 3.6%. Savannah areas in Koda catchment is converted to agricultural land and urban area due to human activities. The decline of 8.4% in groundwater recharge might become so far obvious in the future if the current rate of deforestation continues in the Koda catchment. There is a need to closely monitor the changes in LULC for sustainable development. The results of this study could help to well understand the recharge pattern across Koda catchment under a changing LULC.

关键词： LULC Change Groundwater Recharge Gardenia Model GIS Koda Catchment Mali