Biochar effects on seedling development of the mandagual tree (Caesalpinia velutina)
DOI:
https://doi.org/10.5377/wani.v1i83.21707Keywords:
plant, plant growth, agricultural production, soilAbstract
Utilizing appropriate substrates in nurseries is a key strategy for the success of forest plantations, as it allows for obtaining high-quality plants for transplanting. The objective of this study was to evaluate the effect of different doses of biochar on the production of mandagual (Caesalpinia velutina) seedlings. Four treatments were developed, comprising different concentrations of biochar in the substrate: soil without biochar (control), 20%, 30%, and 40% biochar, with an experimental population of 320 seedlings. Using Microsoft Excel and InfoStat, an analysis of variance (ANOVA) was applied to determine significant differences between treatments, along with Tukey's test (p≤0.05) and Shapiro-Wilk normality tests. The 20% biochar dose produced the best effects on plant height (11.11%), stem diameter (12%), number of leaves (16.06%), and root length (15.3%). The 30% biochar treatment showed the highest shoot-to-root ratio (10.45), while the 20% treatment yielded the best Dickson index (+55%), superior lignification (+33.82%), and a 35.5% reduction in pest infestations. In conclusion, the 20% biochar dose proved to be the most efficient, as it improves seedling quality and reduces costs by requiring less product. These results show that the addition of biochar has a high potential to optimize the production of mandagual seedlings in the nursery.
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