Browsing by Author "Mancheno Salazar, Ronald Patricio"

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    Determinar las curvas de extracción de nutrientes en el cultivo de tabaco (Nicotiana tabacum), variedad Connecticut 207 en la Tabacalera La Meca S.A. (Tabamesa) ’’ en el año 2016
    (2016) Mancheno Salazar, Ronald Patricio; Yánez Yánez, Wilfrido
    The work was carried out in 2016, on the premises of the tobacco company "MECA ¨ SA (TABAMESA), located at Km 79 via Duran-Bucay, Guayas province, its geographic coordinates are 2º17'1.1798" south latitude and 79º12'25.6423 "of Western Longitude and has a height of 78 msnm. According to the ecological classification of Leslie Holdridge, the study area corresponds to Tropical rainforest In the results of nutrient extraction curves it can be seen that nitrogen, its maximum absorption is at 34.73 days with an average amount of 26 mg / plant / day, while phosphorus as well as zinc and Iron, its maximum extraction occurs between 31.55 and 31.13 days with an average amount of 1.88 mg / plant / day, for zinc, 3.55 mg / plant / day and for iron 13.32 mg / plant / day. For the case of potassium, its maximum extraction occurs at day 40.46, with an average amount of 16.28 mg / plant / day, for calcium its maximum extraction occurs at day 36.51 with an average amount of 8.48 mg / plant / day, While Magnesium and Sulfur, their maximum extraction occurs between days 33.72 and 33.02, respectively, with an average amount of 2.54 mg / plant / day for Mg and 2.05 mg / plant / day for S. The Manganese maximum extraction occurs at day 43.19 with an average amount of 2.71 mg / plant / day, the Copper its maximum extraction occurs at day 37.85 with an average amount of 0.55 mg / plant / day and Boron with its maximum level of Extraction on day 39.89 with an average amount of 0.10mg / plant / day. KEY WORDS: Extraction, Nutrients, Plant, Tobacco