Influence of light intensity in the production of coffee seedlings (Coffea Arabica L.) in Nursery
Keywords:
chlorophyll, growth, lighting, shadowAbstract
The cultivation of coffee has gained great importance in the South of Ecuador given its revival in recent years, which has generated new plantations and renewal in small and medium production units, which require many quality seedlings. Hence the importance of studying growth and physiological behaviour in nursery, in different lighting conditions. To contribute to that knowledge, he was held in Chaguarpamba, Ecuador to 760 meters, an experiment under nursery conditions with four light levels (100, 70, 50 and 20%). The indicators was evaluated: chlorophyll content, leaf area, stomatal density and dry mass. A sampling design was used, for data processing was performed analysis of variance, confidence intervals and regressions. The results showed a direct relation between the light intensity and the total chlorophyll content and expressed proportionally higher chlorophyll b from chlorophyll a, enabling greater capture of light energy available. In the treatment of lower light intensity, greater leaf area was due to the higher size of the leaves was obtained. The stomatal density was higher in leaves grown in full sun, due to the smaller size of the same. As a consequence of the greater efficiency of collection and conversion of sun light, the lower light intensity treatments produced higher levels of total dry mass, which was determined mainly by the dry mass of the leaves.Metrics
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