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<p><i>Capsicum annuum</i> L. comprises several cultivars, including True Heart, whose fruit quality is influenced by the organic matter incorporated into the substrate. This study evaluated the fruits of <i>C. annuum</i> (True Heart cultivar) grown in Red Ferralitic Soil from Ciego de Ávila, Cuba, amended with organic matter derived from the invasive aquatic plants <i>Pistia stratiotes</i> L. and <i>Pontederia crassipes</i> Mart. Twenty-five experimental units were established: five with a simple substrate (Red Ferralitic Soil), five units each with mixed substrates containing 0.5% and 1.0% dry weight of <i>P. stratiotes</i>, and five units each with mixed substrates containing 2.0% and 4.0% dry weight of <i>P. crassipes</i>. Morphological traits (fruit number, length, diameter, mass, and pericarp thickness) and concentrations of 25 chemical elements were measured in the first 54 fruits. Except for fruit length, all morphological traits exhibited higher values in fruits from plants grown in mixed substrates. A total of 22 chemical elements were identified, with K, Na, P, and Ca being the most abundant. Considering the concentrations of Cd and Pb in the fresh mass of the fruits, the mixed substrates with dry weight of <i>P. stratiotes</i> and <i>P. crassipes</i> appear suitable for the cultivation of <i>Capsicum annuum</i> (True Heart cultivar). These findings support the safe use of invasive aquatic plant dry weight as a substrate amendment, while highlighting the need for further studies in other cultivars, soil types, and extended cultivation periods to validate its broader applicability.</p>

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Chemical elements in Capsicum annuum L. fruits grown with mixed substrate of Red Ferralitic Soil and dry weight of invasive aquatic plants

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • Leslie Hernández-Fernández,
  • José Carlos Lorenzo,
  • Yanier Acosta,
  • Ariel E. Turcios,
  • Jutta Papenbrock,
  • Roberto González de Zayas

摘要

Capsicum annuum L. comprises several cultivars, including True Heart, whose fruit quality is influenced by the organic matter incorporated into the substrate. This study evaluated the fruits of C. annuum (True Heart cultivar) grown in Red Ferralitic Soil from Ciego de Ávila, Cuba, amended with organic matter derived from the invasive aquatic plants Pistia stratiotes L. and Pontederia crassipes Mart. Twenty-five experimental units were established: five with a simple substrate (Red Ferralitic Soil), five units each with mixed substrates containing 0.5% and 1.0% dry weight of P. stratiotes, and five units each with mixed substrates containing 2.0% and 4.0% dry weight of P. crassipes. Morphological traits (fruit number, length, diameter, mass, and pericarp thickness) and concentrations of 25 chemical elements were measured in the first 54 fruits. Except for fruit length, all morphological traits exhibited higher values in fruits from plants grown in mixed substrates. A total of 22 chemical elements were identified, with K, Na, P, and Ca being the most abundant. Considering the concentrations of Cd and Pb in the fresh mass of the fruits, the mixed substrates with dry weight of P. stratiotes and P. crassipes appear suitable for the cultivation of Capsicum annuum (True Heart cultivar). These findings support the safe use of invasive aquatic plant dry weight as a substrate amendment, while highlighting the need for further studies in other cultivars, soil types, and extended cultivation periods to validate its broader applicability.