This study evaluates forage potential of tithonia diversifolia across two altitude environments, suggesting implications for agroecological adaptation.
Tithonia diversifolia is a shrub species that has gained increasing importance as an alternative species for forage due to its nutritional profile. Its agronomic and nutritional characteristics can vary depending on the environment. Therefore, the objective of this study was to evaluate the agronomic, morphological and nutritional characteristics of Tithonia diversifolia in two altitudinal zones of the Amazonas region, Peru. Plants were cultivated in Chachapoyas (2445 m.a.s.l.) and Cajaruro (797 m.a.s.l.), two locations with contrasting soil, climate, and altitude conditions. The bud burst, agronomic, morphological and nutritional characteristics of T. diversifolia were evaluated. The bud burst, dry weight, dry matter content, plant height, growth rate, carbohydrate content, and gross energy were significantly higher (p<0.05) in T. diversifolia cultivated in Cajaruro. In contrast, crude protein and mineral content were higher (p<0.05) in Chachapoyas. No significant differences (p>0.05) were found for fresh weight, number of leaves/plant, number of shoots/plant, ether extract, and crude fiber. These results suggest that T. diversifolia expresses favorable characteristics for forage in a high-altitude environment, and shows high phenotypic plasticity, which is important for its adaptation and cultivation across diverse agroecological zones.
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Villegas et al. (2025) studied this question.
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