Secado artificial de conos de la especie Pinus maestrensis
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Abstract
En el secado artificial de los frutos de Pinus maestrensis Bisse se comparó la eficiencia de equipos estáticos y giratorios y de diferentes regímenes de calor, cada uno de los cuales incluyó tres rangos de temperatura ascendente ubicados entre 30 y 100o C como valores límites. Se estudió un total de 29 tratamientos, 27 de los cuales correspondieron a las variantes mencionadas, y los dos restantes a la metodología vigente de secado al sol, que se diferenciaron según el tiempo de conservación de los frutos verdes bajo una temperatura de 5 ± 2o C. Se comprobó que el régimen de temperatura óptima de secado corresponde a la secuencia 40-50-60o C, sin que existan diferencias significativas para la capacidad germinativa por concepto del tipo de equipo empleado, lo que sólo incide en el tiempo de secado necesario con una clara ventaja para el equipo giratorio. El almacenamiento de los frutos verdes parece tener un efecto negativo sobre la capacidad germinativa de las semillas extraídas.
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