Search results for "PEST"
showing 10 items of 1124 documents
Analysing the relationship between yields and farmers' incomes to help the design of more sustainable cropping systems
2022
Farmers often grow only the few high-yielding crops in the area, and target maximum yields through high levels of inputs. These practices are based on the assumption of a positive relationship between productivity and profitability over a wide range of cropping systems (Woo et al., 2020; Erythrina et al., 2021). Part of the correlation between productivity and profitability could be related to differences in production situation and therefore yield potential, i.e. characteristics that do not depend on farmers’ decisions. For a given production situation, the systems with the highest profitability and the best environmental sustainability could be systems with moderate yields. The objective …
Auteurs du site web Réseau de Réflexion et de Recherche sur la Résistance aux Pesticides (R4P) www.r4p-inra.fr
2018
Réseau de Réflexion et de Recherche sur la Résistance aux Pesticides (R4P) : www.r4p-inra.frCe site met à disposition des outils et des informations sur la résistance aux produits de protection des plantes. Ces informations peuvent intéresser les professionnels impliqués dans la prévention et la gestion des résistances, des enseignants ou étudiants, et quiconque intéressé par cette thématique.Ring for Research and Reflection on Resistance to Pesticides (R4P) :www.r4p-inra.frThis site provides tools and information on resistance to plant protection products. This information may be of interest to professionals involved in the prevention and management of resistance, teachers or students, and…
PRESENZA IN SICILIA DI GLYCASPIS BRIMBLECOMBEI MOORE (Hemiptera Psyllidae) SU EUCALYPTUS CAMALDULENSIS DEHNH..
2011
On the presence in Sicily of Glycaspis brimblecombei Moore (Hemiptera Psyllidae) on Eucalyptus camaldulensis Dehnh. Authors record the occurrence in Sicily of the red gum lerp psyllid, Glycaspis brimblecombei Moore (Hemiptera Psyllidae) attacking Eucalyptus camaldulensis Dehnh. (Myrtaceae). This species, native to Australia, has been first reported for the Palaearctic Region in 2008, when it has been recorded from the Iberian Peninsula. In 2010 it has been found also in Italy. It seems very difficult to control this insect without the diffusion of its specific antagonist Psyllaephagus bliteus Riek (Hymenoptera Encyrtidae), which resulted very effective in its biological control in North Ame…
Desarrollo de sistemas mesoporosos modificados químicamente para el transporte y liberación selectiva y controlada de fármacos
2019
La presente Tesis Doctoral titulada “Desarrollo de sistemas mesoporosos modificados químicamente para el transporte y liberación selectiva y controlada de fármacos” está centrada en el desarrollo de nuevos sistemas para la detección cromo-fluorogénica de moléculas objetivo, así como en el desarrollo de materiales híbridos orgánicos-inorgánicos para la liberación controlada de fármacos, colorantes y especies fluorescentes, utilizando para ello conceptos de Química Orgánica, Química Supramolecular y de Ciencia de los Materiales. Tanto el desarrollo de procedimientos analíticos para la detección óptica de plaguicidas organofosforados (OPs) utilizando quimiosensores o quimiodosímetros, como la …
Assessment of pahs and selected pesticides in shallow groundwater in the highest protected areas in the Opole region, Poland
2014
The ground water quality was determined after the analyses of water samples from 18 wells. The wells were in the Groundwater Area with the Highest Protection (Triassic water, Opole region, Poland), rural build up. The water table level was low: 0.5 – 18.0 m below the ground surface level (except for one artesian well). The following parameters were determined: pH, EC, colour, ammonium, nitrite, nitrate, dissolved orthophosphate, total phosphorus, dissolved oxygen, BOD, COD-Mn, COD-Cr, humic substances, chloride, sulphate, total hardness, alkalinity, dry residue PAHs (16 compounds), pesticides (6 compounds), however, only selected data were presented in this paper. In all the analysed water …
Solution de détection des maladies de la vigne par imagerie de drone. Diagnostic et réduction des pesticides à la parcelle
2016
ARTICLE A NE PAS DIFFUSEREAGEAPSIAgrosupCT1; Solution de détection des maladies de la vigne par imagerie de drone. Diagnostic et réduction des pesticides à la parcelle
Il est possible de produire sans pesticide, mais à des niveaux de productivité plus faibles
2022
Chercheur à l’Inrae, Stéphane Cordeau est responsable de la plateforme expérimentale CA-SYS, à Dijon, où sont développées des techniques de production agricole sans pesticide.L'objectif de réduire de 50 % l'emploi de pesticides chimiques en Europe d'ici 2030 est-il atteignable ?2030 c'est demain. Je ne peux pas dire si c'est possible ou pas, en revanche c'est un enjeu de taille pour la recherche. Les systèmes zéro pesticide que l'on teste sur le dispositif expérimental qu'est la plateforme CA-SYS, co-construite avec le monde agricole depuis 2013, visent à éclairer les impasses, les difficultés, les performances, le coût de la transition. On a quatre ans de recul qui démontrent qu'il est pos…
Dual action of phosphonate herbicides in plants affected by herbivore—Model study on black bean aphid Aphis fabae rearing on broad bean Vicia faba pl…
2008
Abstract The interactions between plants, herbicides and herbivore insects were studied as an aspect of possible side effect of the using of phosphonate herbicides. The experimental system was composed of phosphonate herbicides, broad bean Vicia faba (L.) plants and black bean aphid Aphis fabae (Scopoli). Two means of herbicide application, namely standard spraying and direct introduction of the herbicide into stem via glass capillary, were examined. The results obtained for N-2-piridylaminomethylene bisphosphonic acid and its derivatives show 10 times higher inhibition of the plant growth if glass capillary mode was used. When plants were infested by aphids 24 h after the use of herbicide,…
Kahden tunnin lajinomaisen harjoittelun vaikutukset väsymykseen ja reaktiovoimat suksislopestylessä
2017
Biodegradation of organophosphorus pesticides by soil bacteria.
2009
A number of studies in the 1980s and 1990s showed that crop-protection products, applied to drained fields, could move downwards through the soil profile and to the groundwater. Organophosphorus insecticides (OPs) are used all over the world for crop protection, for other agricultural practices such as sheep dipping and, in aquaculture, for the control of sea lice. Ops besides showing a specific neurotoxicity and have also been related to various modern diseases, including Creutzfeldt–Jakob (CJD) and the Gulf War syndrome. Although OPs are less persistent than Organoclorine pesticides (OCs), they still constitute an environmental risks thus increasing the social concern about their levels i…