Published 2026-11-13
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Agrícola

Impact of organic residue placement in the palm circle on root development of OxG hybrid palms in sandy soils

DOI: https://doi.org/10.22490/26653176.11750
Eidy Rocío Clavijo Martínez Universidad Nacional Abierta y a Distancia image/svg+xml
Oscar Mauricio Moya Murillo Universidad Nacional Abierta y a Distancia image/svg+xml

Contextualization: In oil palm crops established in sandy soil, the low capacity for water and nutrient retention can limit root development and reduce fertilizer use efficiency. In this context, the placement of pruning and harvest leaves as organic residues in the palm circle represents a management alternative to improve root-zone conditions and support crop productivity.

Knowledge gap: Although the use of plant biomass in oil palm is a recognized agronomic practice, limited information is available on the specific effect of placing pruning and harvest leaves in the palm circle on root concentration and average bunch weight in OxG hybrid palms established in sandy soils under rainfed conditions.

Purpose of the study: The objective of this study was to evaluate the effect of placing pruning and harvest leaves as organic residues in the palm circle on root concentration and average bunch weight in OxG hybrid palms cultivated in sandy soils.

Methodology: The study was conducted in 12-year-old OxG hybrid palms established in Cumaral, Meta, Colombia. Two treatments were compared: palms with continuous placement of pruning and harvest leaves in the palm circle, and palms with a clean palm circle. Both treatments received the same fertilization and amendment program established by the plantation. For root concentration, 30 replications per treatment were evaluated using soil blocks measuring 50 × 30 × 20 cm, located 20 cm from the palm stem. For average bunch weight, 68 bunches per treatment were evaluated. The Kruskal-Wallis test was applied for root concentration, and Student’s t-test was used for average bunch weight, with α = 0,05.

Results and conclusions: Palms with pruning and harvest leaves showed higher root concentration, with 113,3 g/kg, compared with 44,3 g/kg in palms with a clean palm circle. Likewise, average bunch weight was higher in palms with pruning and harvest leaves, reaching 20,6 kg, compared with 16,9 kg in palms without leaves. These results suggest that the placement of organic residues in the palm circle favors root development and improves the productive performance of OxG hybrid palms in sandy soils.

keywords: plant cover, biomass recycling, mulch, nutrient-use efficiency, agricultural productivity, rainfed crop
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How to Cite

Clavijo Martínez, E. R., & Moya Murillo, O. M. (2026). Impact of organic residue placement in the palm circle on root development of OxG hybrid palms in sandy soils. Agricolae & Habitat, 9(1), 46-61. https://doi.org/10.22490/26653176.11750
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