Relationship between vegetative growth and productionof peanut (Arachis hypogaea L.) in the Ecuadorian Amazon
DOI:
https://doi.org/10.29076/issn.2528-7737vol19iss51.2026pp72-80pKeywords:
Arachis hypogaea, tropical ecosystem, differentiated fertilization, physiological trade-offs, agricultural productivityAbstract
Peanuts (Arachis hypogaea L.) are a promising alternative for agricultural diversification in the Ecuadorian Amazon; however, the relationships between vegetative growth and productivity remain poorly explored in humid tropical ecosystems. This study experimentally evaluated, for 75 days after planting, the relationships between morphological parameters and crop productivity variables through field trials under Amazonian soil and climate conditions. An experimental design was implemented with 270 plants distributed across three fertilization treatments (T1: 0.38 g/plant; T2: 0.75 g/plant; T3: 1.50 g/plant), with fortnightly applications. Plant height, stem diameter, number of branches, flowers, and pods were evaluated, as well as pod and seed mass. Statistical analyses included analysis of variance, Tukey's test, and principal component analysis (PCA). The results showed statistically significant differences in plant height (p=8.6e-5) between treatments, indicating a response of vegetative growth to the level of fertilization during the evaluation period. In contrast, no statistically significant differences were observed in seed weight (p=0.263), demonstrating that increased vegetative growth did not translate into increased production in the early stages of cultivation. PCA explained 68.2% of the total variability, identifying a functional differentiation between vegetative and reproductive variables under local conditions
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