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Objectif: Dans le but d’ameliorer la fertilisation de la tomate de plein champ, cette etude a ete menee avec hypothese que la dose d’engrais [1 Matiere Organique (MO) + 2 [Uree et Sulfate de Potassium] (EM)] est autant efficace que le fractionnement en 2 pour la MO et 3 pour l’EM.Methodologie: Au cours des saisons pluvieuses de 2016 et 2017, quatre fractionnements (T1 = 1 MO + 2 EM, T2 = 1 MO + 3 EM, T3 = 2 MO + 2 EM, T4 = 2 MO + 3 EM) ont ete compares a un Temoin Absolu (TA) sur la variete de tomate «Padma». Les parametres de croissance, le rendement et la duree de conservation des fruits sont les variables mesurees. Le rendement du temoin absolu (19 t/ha) est significativement inferieur aux autres modalites T1 (39,22 t/ha); T2 (40,72 t/ha) T3 (37,03 t/ha) et T4 (41,4 t/ha). Les modes de fractionnement n’ont pas influe la duree de conservation des fruits.Conclusion et application des resultats: Cette etude confirme l’importance de l’Uree et du Sulfate de Potassium dans la fertilisation minerale de la tomate. Les niveaux de rendement obtenus indiquent la necessite de diffuser l’utilisation de l’Uree et du Sulfate de Potassium en complement mineral aux autres engrais aussi bien en simple ou en double fractionnement.Mots cles: tomate, fractionnement, matiere organique, engrais mineral, rendement, conservation, Sud- BeninEnglish Title: Effect of fractionation of organic fertilizer, urea and potassium sulphate on the productivity and conservation of tomato fruits in southern BeninEnglish AbstractObjectives: In order to improve fertilization of tomato in the field, this study was conducted with the assumption that the dose of fertilizer [1 Organic Matter (MO) + 2 [Urea and Potassium Sulphate] (EM)] is as much effective as splitting in 2 for the MO and 3 for the EM.Methodology and Results: During the rainy seasons of 2016 and 2017, four fractionations (T1 = 1 MO + 2 EM, T2 = 1 MO + 3 EM, T3 = 2 MO + 2 EM, T4 = 2 MO + 3 EM) were compared to one Absolu control (TA) in a complete four-repeat on the tomato variety "Padma". The tests were conducted in a station on ferralitic soil at INRAB in southern Benin. The variables measured were growth parameters, yield and shelf life of  fruits under splits. Splits did not have a significant effect on plants height and diameter of tomato. The yield of the absolute control (19 t / ha) is significantly lower than the other T1 (39.22 t / ha); T2 (40.72 t / ha) T3 (37.03 t / ha) and T4 (41.4 t / ha). The fractionation modes did not significantly influence (P> 0.05) the quality parameters, in particular the soluble sugar content and the dry matter content. It is the same for the conservation of the fruits where the different modes of fractionation reached 50% of loss after 20 days in ambient environment.Conclusion and application of results: This study confirms the importance of Urea and Potassium Sulfate in the mineral fertilization of tomatoes. The yield levels obtained indicate the need to diffuse the use of Urea and Potassium Sulphate as a mineral supplement to other fertilizers both in single and double fractionation.Keywords: tomato, fractionation, organic matter, mineral fertilizer, productivity, conservation, South Benin

journal of applied biosciences

Effet du fractionnement d’engrais organique, d’Urée et du Sulfate de Potassium sur la productivité et la conservation des fruits de tomate au Sud du Bénin