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Crecimiento y produccion de hojas de Pittocaulon praecox
by
Palacios-Vargas, José G.
, Pérez-Velázquez, Daniela
, Callejas-Chavero, Alicia
, Castaño-Meneses, Gabriela
2020
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Crecimiento y produccion de hojas de Pittocaulon praecox
by
Palacios-Vargas, José G.
, Pérez-Velázquez, Daniela
, Callejas-Chavero, Alicia
, Castaño-Meneses, Gabriela
2020
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Journal Article
Crecimiento y produccion de hojas de Pittocaulon praecox
2020
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Overview
Se evaluó el efecto de la cobertura vegetal en la producción y crecimiento de hojas de Pittocaulon praecox en dos sitios contrastantes, cerrado y abierto, en un matorral xerófilo. En tres arbustos se registró longitud, número de hojas y crecimiento total, temperatura, humedad, C[O.sub.2] del suelo, y cantidad de hojarasca producida. Se hizo un análisis de varianza de medidas repetidas y una prueba de t. La menor temperatura (20,79 [+ ó -] 2,8 [grados]C), mayor concentración de C[O.sub.2] (169,10 [+ ó -] 12,19) y humedad (40,13 [+ ó -] 8,26) se registraron en el sitio cerrado, donde los arbustos crecen más (t118 = 3,83, P = 0,0002), producen más hojas (86,21 [+ ó -] 43,31 gr) y alcanzaron mayor tamaño. Se concluye que la cobertura vegetal influye en el crecimiento y producción de hojas de Pittocaulon praecox. Palabras clave. Biomasa, cobertura vegetal, factores abióticos, factores bióticos, fenología.
Publisher
Universidad Nacional de Colombia, Instituto de Ciencias
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