CHARACTERISTICS OF THE CANOPY ASSOCIATED WITH THE AGRICULTURAL YIELD OF SUGAR CANE
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Abstract
Estimation by remote sensing of the sugarcane leaf area index arouses great interest in Cuba due to its close relationship with agricultural yields, however, the appropriate moment for its estimation (phenological age) is unknown, as well as the influence of the area. specific foliar in the variability of this indicator. The objective of this work is to know the relationship of the leaf area index and the specific leaf area with the agricultural yield of sugarcane. The data to correlate the leaf area index with the agricultural yields were obtained from thirty experiments carried out prior to the execution of of the present work. The relationship between the specific leaf area and the leaf area index was studied in six cultivars that occupied the highest percentage of sugarcane agricultural area in Cuba. A significant positive correlation was obtained between the leaf area index and the agricultural yields in the stage between the end of the period of great growth and the beginning of the maturation of the plantations. The phenological age did not contribute significant differences in the leaf area index among the cultivars in the final months of the period of great growth. The low values of the specific leaf area corresponded with low values of the leaf area index. It is estimated that cultivars may present similar relationships between the leaf area index and agricultural yields, taking into account the development of the specific leaf area.
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