Abstract

SILEZ, Hernán  and  CLEMENTELLI, Alfredo. RESPUESTA DEL CULTIVO DE TOMATE (Lycopersicum sculentum) A LA APLICACIÓN DEL EXTRACTO DE STEVIA EN LA ZONA NORTE DE SANTA CRUZ (SANTA ROSA DEL SARA, 2009). Univ. Cienc. Soc. [online]. 2010, vol.1, n.2, pp. 23-30. ISSN 8888-8888.

This research was made in the Practice Center (CEPRA) of the UCEBOL, in orderto evalúate the response of tomato {Lycopersicum esculentum) to the application of stevia (stevia rebaudiana) in liquid extract form the soil and directly to crops by foliar or irri-gation. Based on the experience of adding stevia to improving crop growth by reducing pathogenic microorganisms and increase the antagonists and, secondly, increasing soil fertility. The treatments were: Control (without extract of stevia) cc/20 250 liters of water in the flowering stage and then every 15 days on foliage, 250 cc/20 liters of water every 15 days post transplant in the foliage; 250 ce stevia extract in 10 liters of water applied to the soil in the transplant and every 15 days 250 liters of water cc/20 post transplant in the foliage. Among the results was verified by applying that stevia extract in the seedbed in the form of irrigation, has an effect on the number of stand of plants / m², plant height and greater root development seedbed than the control not stevia extract applied. Stevia extract has an effect on agronomictraits, especially in the yield per plant, fruit weight (quality), plant height. And not in the quantity of fruits per plant, compared with absolute control. According to economic analysis study, all treatments are creating more valué than the control, with emphasis in T2, with fewer applications of stevia extract to achieve good economic returns relative to T3. Applying stevia extract reduced the number and frequeney of fungicide applications in the tomato crop and can get more time to harvest fruits per batch and more durable.

Keywords : Fertilization; Tomato; Stevia; Extract.