Efecto de los niveles de sombra y fertilización sobre variables morfológicas y fisiológicas en cacao (theobroma cacao l.) clon ccn51 en la zona de el Padmi, Zamora Chinchipe
Cocoa (Theobroma cacao L.) is a traditional and economically important crop for Ecuador, it is the third non-oil exportable product. Zamora Chinchipe is located in the possible sub-center of origin of cocoa, likewise, this crop has great agronomic and economic importance for this area. However, the...
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| Format: | bachelorThesis |
| Jezik: | spa |
| Izdano: |
2022
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| Online dostop: | https://dspace.unl.edu.ec/jspui/handle/123456789/25957 |
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Označite | Izvleček: | Cocoa (Theobroma cacao L.) is a traditional and economically important crop for Ecuador, it is the third non-oil exportable product. Zamora Chinchipe is located in the possible sub-center of origin of cocoa, likewise, this crop has great agronomic and economic importance for this area. However, the lack of knowledge of the colonists and the low-tech management generate low yields. In cocoa there are factors that limit its growth such as fertilization and, on the other hand, the real effect of shade on the growth and yield of this crop is unknown. For this reason, the objective of this research work is to evaluate the morphological and physiological behavior of the cocoa clone CCN51 (Theobroma cacao L.) under the effect of two levels of shade and two levels of fertilization in the province of Zamora Chinchipe. The study was carried out at the "El Padmi" Experimental Station of the National University of Loja, using an already established plantation of one year and eight months of growth with a completely randomized design (DCA) of four treatments and four repetitions. Morphological variables were measured: height, shoot length, trunk cross-sectional area, leaf area and index, and crown diameter. Physiological variables such as pH and electrical conductivity, chlorophyll concentration, density, and stomatal index were also measured. The effect of the treatments was evaluated using ANOVA and means test (Tukey) (p=0.05). In the results obtained, it is observed that the fertilization factor caused a significant effect on the pH, electrical conductivity, length and TCA of the shoots, while the shade factor caused an effect on the density and stomatal index, on the other hand, the shadow interaction -fertilization had an effect on chlorophyll concentration. Keywords: Theobroma cacao L, fertilization, shade, solar radiation, growth, productivity. |
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