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Drug is a substance, which trouble brain. One of the reasons for juvenile delinquency is drug use. The present work is a retrospective study based on seizures of drugs made by the Niger courts and. Evaluation of the drug utilization by people according to the statistics of drug seizures from 2013 to 2016 of the Central Office for the Suppression of Illegal Traffic in Narcotics (OCRTIS). According to the statistics of drug seizures from 2013 to 2016 of the Central Office for the Suppression of Illegal Traffic in Narcotics (OCRTIS). Nine (9) types of drugs belonging to six (6) families were seized in Niger including: Amphetamines, Cannabis, Crack, Cocaine, Diazepam, Ephedrine, Heroin, Methamphetamines and Tramadol. These come from all countries bordering Niger but also from East Africa and Central Africa and the data gathered was analyzed using MS Excel. It should be noted that the percentage of those charged varies according to age group whose: the under 18’s are 6%, 59% are between 18 and 29 years, 25% are between 30 and 39 years, the 40 years and over are 10%. So most of the people which have been arrested are minors between 18 and 39 years old. In addition, it is necessary to mention 2% of women against 98 % of men in the said sale and consumption. If the number of seizures increases each year, the possibility of drug consumption by its users would also grow and highlights important diseases related to their consumption. Thus, the more appropriate implication of the blood and urine tests of these drug users.

Striga gesnerioïdes est une plante parasite qui cause des dégâts importants sur le niébé et les méthodes de lutte testées restent insatisfaisantes. L’étude vise à mettre au point, une référence de technique d’association sésame-niébé pour contribuer à lutter efficacement contre Striga gesnerioïdes. À cet effet, un dispositif en Split-Plot est utilisé sur un terrain naturellement infesté par Striga gesnerioïdes. Trois comptages à des périodes différentes (42, 56 et 70 jours après semis) du nombre de plants de Striga gesnerioïdes émergés par poquet de niébé ont été réalisés. Ainsi, en association dans le même poquet (sésame + niébé), les variétés de sésame EF 146, HC 110, ICN 130, HB 168, Vgr 156 et EF 147 sont efficaces pour atténuer l’émergence de striga. En alternance de poquets (niébé et sésame), les variétés de sésame EF 146, HC 110, ICN 137, EF 147 et 38-1-7 sont efficaces contre striga. Et les variétés de sésame EF 146, Vgr 156, HC 108 et 38-1-7 ont montré leurs efficacités en alternance de lignes avec le niébé. EF 146 est la seule variété de sésame efficace dans toutes les trois mesures de protections. Ces résultats pourraient être vulgarisés au niveau des producteurs de niébé pour booster sa production au niveau national, voir mondial. Striga gesnerioïdes is a parasitic plant that causes significant damage to cowpea and the control methods tested remain unsatisfactory. The study aims to develop a technical reference of sesame-cowpea association to contribute to the effective control of Striga gesnerioïdes. For this purpose, a Split-Plot device is used on land naturally infested by Striga gesnerioïdes. Three counts at different periods (42, 56 and 70 days) of the number of emerged Striga gesnerioïdes plants per cowpea were made. Thus, in combination in the same plot (sesame + cowpea), the sesame varieties EF 146,HC 110, ICN 130, HB 168, Vgr 156 and EF 147 are effective in mitigating Striga emergence. In alternating rows (cowpea and sesame), the sesame varieties EF 146, HC 110, ICN 137, EF 147 and 38-1-7 were effective against striga. And the sesame varieties EF 146, Vgr 156, HC 108 and 38-1-7 showed their efficacy in alternating rows with cowpea. EF 146 is the only sesame variety that is effective in all three protective measures. These results could be disseminated to cowpea producers to boost its production at the national and even global level.