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Littérature scientifique sur le sujet « Constraining weeds »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Constraining weeds"

Arnaud-Freddy, Yapi. "Constraining weeds in okra cultivation and farmer management of weeds in South-East of Côte d'Ivoire." Journal of Biodiversity and Environmental Sciences (JBES) 25, no. 4 (2024): 71–78. https://doi.org/10.5281/zenodo.15510654.

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This study was carried out among okra growers in the La Mé region, with the aim of identifying farmers’ weed management practices and the main weeds present in the fields. Using a questionnaire coupled with a floristic inventory in each field, the agrotechnical characteristics of the farms and the main weed species were determined. The results show that 94.67% of the farmers surveyed use herbicides and 67.33% use insecticides. Almost all the herbicides used were total herbicides, applied before sowing. 68.67% of growers carry out three weed control operations per production cycle,

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YAPI, Arnaud-Freddy, Arsène GUE, Ahia Christine Florence KPLA, and Maxime N’tapké Kama BORAUD. "Abundance and Partial Harmfulness Index (PHI) of Weeds in Plantain (Musa paradisiaca L., Musaceae) in Mé Region, South-East Côte d'Ivoire." Asian Journal of Biology 21, no. 6 (2025): 80–91. https://doi.org/10.9734/ajob/2025/v21i6515.

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Poor weed management can result in additional costs that can be estimated at over 35%. Determining of the most troublesome weeds is becoming an essential part of effective weed control. A study was therefore carried out in the south-east of Côte d'Ivoire, in plantain plantations, to identify abundant weeds and assess their potential for causing damage. Two approaches were used. The first one consisted in carrying out a survey of plantain growers and the second in carrying out floristic surveys in plantain fields. To do this, the degree of infestation and the Partial Harmfulness Index of the ma

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GHAMARI, Hossein. "Weed Interference Effects on Leaves, Internode and Harvest Index of Dry Bean (Phaseolus vulgaris L.)." Notulae Scientia Biologicae 7, no. 1 (2015): 111–15. http://dx.doi.org/10.15835/nsb719415.

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The development of appropriate weed management strategies and efficient use of herbicides relies upon understanding weed-crop interactions. A field study was carried out to assess the effect of weed interference on leaves, internode and harvest index of dry bean (Phaseolus vulgaris L.). The experiment was established under a randomized complete block design with two types of weed interference treatments: plots with weeds and plots without weeds at different time intervals (0, 10, 20, 30, 40 and 50 days after crop emergence). The sigmoid Boltzmann model was used to quantify the crop traits as i

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N.D, Zatale, Chandurkar R.S, Shinde M.P, et al. "RNAi in Plant Protection: A Targeted Approach for Insect Pest Suppression." Agriculture Association of Textile Chemical and Critical Reviews 13, no. 2 (2025): 187–91. https://doi.org/10.21276/aatccreview.2025.13.02.186.

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The biggest challenge faced by humanity in the 21 st is how to increase crop yields in a profitable, efficient, and sustainable way. There are several issues constraining agricultural productivity, such as damage by insect pests, diseases, and weeds. Currently, chemical pesticides remain the major approach used for suppressing insect pests owing to their well-controlled effect. Unfortunately, the excessive application of chemical pesticides has caused some serious problems threatening the environment and human health. RNAi is a post-transcriptional gene silencing mechanism initiated by the int

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Fernández-Aparicio, Mónica, Lidia del Moral, Stéphane Muños, Leonardo Velasco, and Begoña Pérez-Vich. "Genetic and physiological characterization of sunflower resistance provided by the wild-derived OrDeb2 gene against highly virulent races of Orobanche cumana Wallr." Theoretical and Applied Genetics 135, no. 2 (2021): 501–25. http://dx.doi.org/10.1007/s00122-021-03979-9.

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Abstract Key message OrDeb2 confers post-attachment resistance to Orobanche cumana and is located in a 1.38 Mbp genomic interval containing a cluster of receptor-like kinase and receptor-like protein genes with nine high-confidence candidates. Abstract Sunflower broomrape is a holoparasitic angiosperm that parasitizes on sunflower roots, severely constraining crop yield. Breeding for resistance is the most effective method of control. OrDeb2 is a dominant resistance gene introgressed into cultivated sunflower from a wild-related species that confers resistance to highly virulent broomrape race

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MUNYULI, Théodore, Justin OMBENI, Bienfait BASHI MUSHAGALUSA, Arcadius KUBUYA, Alain IRENGE, and Gentil KIWAF HERADI. "DIAGNOSTIC OF THE CURRENT LIVELIHOOD EVOLUTION, FARMING PRACTICES, PRODUCTION CONSTRAINTS, POST-HARVEST PROCESSING, TRADING AND VALUE-CHAIN SYSTEMS OF SWEETPOTATO IN NORTH-KIVU PROVINCE, EASTERN OF DRCONGO." International Journal of Agriculture, Environment and Bioresearch 07, no. 06 (2022): 11–93. http://dx.doi.org/10.35410/ijaeb.2022.5778.

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Although in many countries of Sub-Sahara Africa, sweet potato has been found to be very important for food security for farmers who depended on it for their livelihood, little documentation on the production constraints, preferences for sweetpotato genotypes by farmers, pre- and post-harvest handling and value chain issues were available for North-Kivu province. Hence, a survey assessment was conducted (March-December 2021) in major sweetpotato growing territories in North-Kivu province. Data was collected through field visits, semistructured interviews, focus group discussions and field obser

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Henry, Georgia A., and John R. Stinchcombe. "G-matrix stability in clinally diverging populations of an annual weed." Evolution 77, no. 1 (2022): 49–62. http://dx.doi.org/10.1093/evolut/qpac005.

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Abstract How phenotypic and genetic divergence among populations is influenced by the genetic architecture of those traits, and how microevolutionary changes in turn affect the within-population patterns of genetic variation, are of major interest to evolutionary biology. Work on Ipomoea hederacea, an annual vine, has found genetic clines in the means of a suite of ecologically important traits, including flowering time, growth rate, seed mass, and corolla width. Here we investigate the genetic (co)variances of these clinally varying traits in two northern range-edge and two central population

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Brinkhoff, James, John Hornbuckle, and Jan Barton. "Assessment of Aquatic Weed in Irrigation Channels Using UAV and Satellite Imagery." Water 10, no. 11 (2018): 1497. http://dx.doi.org/10.3390/w10111497.

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Irrigated agriculture requires high reliability from water delivery networks and high flows to satisfy demand at seasonal peak times. Aquatic vegetation in irrigation channels are a major impediment to this, constraining flow rates. This work investigates the use of remote sensing from unmanned aerial vehicles (UAVs) and satellite platforms to monitor and classify vegetation, with a view to using this data to implement targeted weed control strategies and assessing the effectiveness of these control strategies. The images are processed in Google Earth Engine (GEE), including co-registration, a

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Kromm, Arne, Thomas Kannengiesser, Jens Altenkirch, and Jens Gibmeier. "Residual Stresses in Multilayer Welds with Different Martensitic Transformation Temperatures Analyzed by High-Energy Synchrotron Diffraction." Materials Science Forum 681 (March 2011): 37–42. http://dx.doi.org/10.4028/www.scientific.net/msf.681.37.

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Low Transformation Temperature (LTT) alloys were developed in order to control the residual stress development by the martensitic phase transformation already during cooling of the weld metal. The positive effect of such LTT alloys on the mitigation of detrimental tensile residual stresses during welding has already been confirmed on the basis of individual laboratory tests. Within the current project it was experimentally investigated whether the phase transformation mechanisms are effective under increased restraint due to multi-pass welding of thicker specimens. The local residual stress de

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Ferreira, Susana, Fátima Oliveira, Francisco Gomes da Silva, et al. "Assessment of Factors Constraining Organic Farming Expansion in Lis Valley, Portugal." AgriEngineering 2, no. 1 (2020): 111–27. http://dx.doi.org/10.3390/agriengineering2010008.

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Organic farming can play an important role in rural development and food production, by reinforcing the trend toward sustainable agriculture and its purpose of ecosystem conservation. The agribusiness of organic farming is particularly relevant in family farming, given the labor availability and the short marketing circuits. The innovative techniques of organic farming, namely with soil fertility, weed and pest control, opens a wide range of possibilities in its development and extension. The expectation of organic farming profitability in small-scale family farming, supported by known success

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Actes de conférences sur le sujet "Constraining weeds"

Charvat, Pavel, Lubomir Klimes, Milan Ostry, and Josef Stetina. "A Validated TRNSYS Model of Thermally Activated Layer With Phase Change Material." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51705.

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Simulations of building performance or HVAC systems performance usually cover a time period of several weeks, months or even a year. Therefore, the computational demand of simulation models of buildings or HVAC systems can be quite constraining for their practical application. A substantial simplification of the simulated problem is usually necessary to reduce the computational demand. The paper reports the development of a quasi 1D model of a thermally activated layer with phase change material. The model was developed in MATLAB and subsequently implemented as a TRNSYS type. The model was val

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