Efecto de tres niveles de sombra en el crecimiento y rendimiento del cacao (Theobroma cacao L.) clon CCN51 en el Padmi, Zamora Chinchipe
The cultivation of cacao (Theobroma cacao L.) is of great socioeconomic importance in the world, Ecuador is a producer of fine aroma cacao which is required worldwide for the quality it possesses. However, in the province of Zamora Chinchipe, the cultivated area is not enough to satisfy the current...
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| Formato: | bachelorThesis |
| Lenguaje: | spa |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | https://dspace.unl.edu.ec/jspui/handle/123456789/27102 |
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Agregar Etiqueta | Sumario: | The cultivation of cacao (Theobroma cacao L.) is of great socioeconomic importance in the world, Ecuador is a producer of fine aroma cacao which is required worldwide for the quality it possesses. However, in the province of Zamora Chinchipe, the cultivated area is not enough to satisfy the current local and national demand, so it is necessary to promote those agronomic activities that improve yield. Therefore, the effect of three levels of shade on the growth and yield of cacao clone CCN51 in Padmi, Zamora Chinchipe was determined. Two and a half years old plants were used, with a planting density of 3.5 m x 4 m, under a completely randomized block design, with three treatments corresponding to three shade levels: 0 % (T1), 35 % (T2) and 80% (T3), and six repetitions. The variables evaluated were: crown diameter, leaf area and leaf area index, photosynthetically active radiation, SPAD chlorophyll index, number of cobs per plant, cob length, cob weight, dry seed weight, and estimated yield. The effect of the treatments on the dependent variables was evaluated using ANOVA and means test (Tukey) (p< 0.05). The results indicated that significant differences were found between the treatments in variables crown diameter and photosynthetically active radiation. Crown diameter increased with shade, while radiation decreased. However, there was no significant effect for the other variables evaluated. The cacao plants may have adapted to the conditions of the Ecuadorian Amazon, since, despite reducing radiation, there is no effect of this decrease on the growth and production of the crop. Keywords: Theobroma cacao L, growth, yield, shade, photosynthetically active radiation. |
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