Publicação: Cultivation Age of Oil Palm Plants Alters the Dynamics of Immobilization, Recycling and Export of Sulfur and Increases its use Efficiency
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2023-01-01
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This study aimed to evaluate sulfur (S) nutrition in oil palm organs as a function of plant age. The experiment was carried out in the commercial plantations of the company Agropalma S/A (Municipality of Tailândia, Pará State, Brazil) in a dystrophic Yellow Latosol. The experiment design was completely randomized with four replications and seven treatments: plant ages (2, 3, 4, 5, 6, 7 and 8 years). The effects of treatments were evaluated in terms of concentration, accumulation, immobilization, recycling, export, and use efficiency of S in each plant organ. In the 8th year, the highest S concentration in the vegetative organs occurred in the cabbage (palm heart), while male inflorescence had higher S concentration in the 7th year in the reproductive organs. As plant age advanced, stipe and fruits were, respectively, the vegetative and reproductive organs that presented higher S accumulation. In older plants, S export occurs at higher amounts in the bunches. In oil palm, the immobilized and recycled quantity of S is higher than that exported. The use efficiency increased in the different organs of oil palm proportionally to the increase in plant age, while the S use efficiency in the rachis was 2630 times greater than that in the cabbage. In conclusion, oil palm plants change the nutritional demand as a function of age, increasing the S use efficiency and modifying the dynamics of immobilization, recycling, and export of S
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International Journal of Agriculture and Biology, v. 29, n. 1, p. 74-82, 2023.
