Effect of organic substrates on the physiological development of coffee (Coffea canephora P.) cuttings

The effect of three substrates made from vermicompost and onebased on compost was evaluated on the development of physiological variables ofcuttings from three coffee clones: INIFAP 00-28, INIFAP 00-24, and INIFAP 97-14of robusta coffee (Coffea canephoraP.) and their interactions. Twelve treatmentswere studied, arranged in a strip plot block design with factorial structure in thetreatments (substrate x clone) with four repetitions; ANOVA and Tukey’s meancomparison (p≤0.05) was performed. In the substrate, the variables pH, electricalconductivity (EC), organic matter (OM), apparent density (Bd), cation exchangecapacity (CEC), macro and micronutrients were evaluated; while in the coffeecuttings clones, mortality percentage (M), axillary bud yield percentage (S), rootingpercentage (R), outbreak length (OI), number of internodes (Ni), number of leaves(NI), number of roots (Nr) and root length (RI). In the INIFAP substrate, the differenttypes of robusta coffee clones showed the highest physiological development.Among types of clones, clone INIFAP 00-28 presented the highest physiologicaldevelopment of the photosynthesis part (axillary bud yield, outbreak length, numberof internodes, number of leaves); however, it showed the least root development.The lowest development was observed in the clone INIFAP 97-14, and the highestroot development was observed in the clone INIFAP 00-24 (percentage of rooting,number of roots and root length) while the clone INIFAP 00-28 showed the highestdevelopment of the photosynthesis part. Se evaluó el efecto de tres sustratos elaborados a base de ver-micompost y uno a base de compost en el desarrollo de variables fisiológicas deesquejes de tres clones de café: INIFAP 00-28, INIFAP 00-24, e INIFAP 97-14de café robusta (Coffea canephora P.) y sus interacciones. Se estudiaron 12tratamientos, alojados en un diseño de bloques en tiras divididas (strip plot) conestructura factorial en los tratamientos (substrato x clon) con cuatro repeticiones,se realizó ANOVA y comparación de medias de Tukey (p≤0.05). En el substratose evaluaron las variables pH, Conductividad eléctrica (EC), materia orgánica(OM), densidad aparente (Bd), capacidad de intercambio catiónico (CEC), macroy micronutrientes; mientras que en los clones de esquejes de café se evaluaronporcentaje de mortalidad (M), porcentaje de prendimiento de yemas axilares (S),porcentaje de enraizamiento (R), longitud de brote (OI), número de entrenudos (Ni),número de hojas (NI), número de ra