Estudio agronómico del cultivo de tabaco (Nicotiana tabacum Linnaeus) bajo distintos niveles de fertilización en la zona de Quevedo

The work consisted of evaluating the vegetative development and production of the tobacco crop (Nicotiana tabacum Linnaeus.) Under different levels of chemical fertilization. The investigation was carried out at the Hacienda "Fincazam", located at km 13 of the Quevedo - Valencia road, Ana Maria de Abajo site, Los Rios province and lasted three months from July to October 2017. a pre-established tobacco plantation, a completely randomized design was used with four treatments T1-> (N-> 100kg); (P-> 14kg); (K-> 190kg); (Ca-> 40kg); (Mg-25kg); (S-> 15kg) / ha T2-> (N-> 120kg); (P-> 13kg); (K-> 150kg); (Ca-> 30kg); (Mg-> 20kg); (S-> 10kg) / ha; T3-> (N-> 133kg); (P-> 26kg); (K-> 175kg); (Ca-> 60kg); (Mg-> 30kg); (S-> 20kg) / ha and T4-> (N-> 200kg); (P-> 39kg); (K-> 200kg); (Ca-> 80kg); (Mg-> 40kg); (S-> 30kg) / ha with six repetitions. The variables were recorded from 7 to 56 days after transplantation and were plant height (cm), stem diameter (cm), number of leaves, weight of biomass in dry leaves (kg), total yield of dry leaves ( kg / ha) and benefit - cost ratio in the cultivation of tobacco (Nicotiana tabacum Linnaeus). The results referring to the variables studied, it is observed that there were significant differences for treatments with a probability (p> = 0.05), with respect to the analysis of variance by applying different levels of fertilization, it was found that the coefficients of variation were similar to each other The fertilization levels of treatment two, showed a positive response regarding the agronomic variables of the tobacco crop, presenting a higher plant height, stem diameter, higher dry leaf yield since it was the most economical and viable to the rest of the tested levels, which satisfies the production and yield of tobacco cultivation, thus generating more economic income for the tobacco producer.