EVALUATION OF FARMERS' PHYTOSANITARY PRACTICES IN THE PLAIN OF TRIFFA (EASTERN MOROCCO), IDENTIFICATION AND EVALUATION OF SANITARY AND ENVIRONMENTAL RISKS.

The use of pesticides in agriculture has certainly led to a dramatic increase in agricultural yields worldwide. Nevertheless, it is not without consequences for the environment and human health. In this context, we conducted a survey among 67 farmers in the Plain of Triffa of the Berkane region to analyze their phytosanitary practices and assess the risks to the environment and human health. 98% of the farmers have never received training on the use of pesticides. 181 different commercial specialty chemicals were inventoried.  Insecticides (50%) are the most commonly used pesticides, followed by fungicides and herbicides with 28% and 10% respectively.  The whole is divided into 19 chemical families, the most inventoried of which are organophosphorus (30%) and pyrethroids (29%). Organochlorines, despite their worldwide ban, are still in use. Of the 68 active ingredients listed, the most frequently used are imidacloprid, chlorpyrifos, lambda cyhalothrin, glyphosate, and deltamethrin. The doses used by farmers are in the majority of cases higher than those recommended.  As for the pre-harvest interval, few farmers comply with the prescribed standards. Almost all farmers (85%) neglect the necessary protective measures. Empty packaging of plant protection products is either abandoned in the wild, incinerated or reused for domestic purposes. Thus, the phytosanitary practices of the farmers surveyed are described as poor. Faced with this frightening situation, there is an urgent need to intervene to support farmers and agricultural producers for better professional and environmental protection on the one hand and for healthy and safe production on the other

Evolution of in Fe-doped manganites synthesized by the ball-milling method

Manganites-based perovskites, having the general formula LnAMnMO where Ln is a rare earth element (Ln = Pr , La ,..) and A is an alkaline earth element (A = Sr , Ba , Ca ,..), were the center of interest of many studies because of their outstanding physicochemical properties and because they can play an important role in various applications. The aim of this work is the development with mechanical alloying method and study of physicochemical properties of new manganites. This work focuses on the development and characterization of series LaCaSrMnFeO (0 ≤ x≤ 0. 3. The structural study showed that the cell parameters of the samples increase with the increase in the rate of iron and causing the expansion of the orthorhombic distortion. This result is confirmed by the tolerance factor tg (0. 75 < tg< 0. 95 : orthorhombic structure). The magnetic study showed that the substitution of Mn by Fe in these series indicates a ferromagnetic-paramagnetic transition. This transition accompanied with a decrease in the Curie temperature (T)

Critical Behavior in the La0.6Ca0.4MnO3 Perovskite Manganite

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Study of magnetic transition and magnetic entropy changes of Pr0.6Sr0.4MnO3 and Pr0.6Sr0.4Mn0.9Fe0.1O3 compounds

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Critical phenomena in La0.6Pr0.1Sr0.3MnO3 perovskite manganese oxide

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Structural, morphologic and magnetic properties of Pr0.6La0.1Ca0.3Mn1−xFexO3 (0≤x≤0.3) perovskite nanopowder

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Study of magnetic and magnetocaloric properties of La0.6Pr0.1Ba0.3MnO3 and La0.6Pr0.1Ba0.3Mn0.9Fe0.1O3 perovskite-type manganese oxides

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Effect of Fe Substitution on the Structural, Magnetic and Magnetocaloric Properties of Pr0.6La0.1Mg0.3Mn1−x Fe x O3 (0≤x≤0.3) Perovskite Manganites Prepared by Sol Gel Method

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Magnetic and magnetocaloric properties of La0.6Pr0.1Sr0.3Mn1−xFexO3 (0≤x≤0.3) manganites

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