Year: 2025
Type: article
Abstract: Foliar application of potassium silicate (K 2 SiO 3 ) has been demonstrated to be a promising alternative for induced tolerance. We aimed to evaluate the effect of applying K 2 SiO 3 on the nutrition and growth of Genipa americana L. seedlings under two luminous ambiences. Four doses of K 2 SiO 3 via foliar spray were tested: 0.0, 2.5, 5.0, and 10.0 mL L –1 , and cultivation under full sun or shade. We observed higher N content in seedlings under the full sun at 45 days and decreased with increased K 2 SiO 3 doses in the same ambience at 90 days, while P, K, Ca, and Mg were higher in shaded seedlings and with 10.0 mL L –1 K 2 SiO 3 at 45 and 90 days. The order of nutritional requirements for most seedlings, regardless of cultivation conditions, was K > N > Ca, with an inversion of Mg to P requirement with 10.0 mL L –1 K 2 SiO 3 . Shaded seedlings showed better growth at 45 and 90 days, but K 2 SiO 3 contributed to photoassimilate accumulation under full sun. Foliar application of 5.0 mL L –1 K 2 SiO 3 contributed to greater stem diameter, leaf area, and Dickson quality index. Foliar application of K 2 SiO 3 alleviated the stressful effects of full sun and favored the nutrition and quality of G . americana seedlings.
Source: Discover Forests
Authors: Marcos Aurélio de Oliveira, Cleberton Correia Santos, Rafaela Gomes Jardim, Leonardo Meotti Ribeiro, José Ricardo Palácio Caldeira Dias
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W4407253695