Extracción de Fe, Mn, Zn, Cu y B en cultivo de pepino (Cucumis sativus L.)
Resumen
El cultivo de pepino, aumenta la acumulación de materia seca y rendimiento cuando se le suministran macro nutrimentos y micro nutrimentos en cantidades adecuadas de acuerdo con su extracción nutrimental. Para el caso de micro nutrimentos, no se cuenta con información exacta sobre las cantidades extraídas por el cultivo cuando se siembra en sistema hidropónico con soluciones nutritivas, lo que puede conducir a aplicaciones excesivas o a deficiencias nutrimentales. Por lo anterior, se hizo una investigación en la Universidad Autónoma Chapingo, México, en condiciones de invernadero y cultivo hidropónico con diseño experimental de bloques al azar y cuatro tratamientos de concentración de la solución nutritiva universal de Steiner 25, 75, 125 y 175%, con el objetivo de determinar el rendimiento, la cantidad de micro nutrimentos Fe, Cu, Zn, Mn y B extraídos por la parte aérea del cultivo y la tasa absoluta de extracción. De acuerdo con los resultados obtenidos, el rendimiento alcanzó 8,20 kg/planta con la solución nutritiva 175%, mientras las concentraciones 25, 75 y 125% correspondieron a un rendimiento del 40, 78 y 85%, respectivamente, de la solución 175%. El cultivo de 1 t de frutos extrajo 41,74; 34,90; 12,01; 40,84 y 36,91 g de Fe, Cu, Zn, Mn y B, respectivamente.
Palabras clave
Nutrición de plantas, Micronutrientes, Cultivo sin suelo, Hortalizas, Cucurbitaceae
Citas
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