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Silicon (Si) leaf spraying can benefit the production and post-harvest quality of leafy vegetables, however the effect of Si application in land cress and chicory is unknown. This study aimed to verify Si supplementation by foliar spraying when using different sources and concentrations in content of Si and ascorbate in leaves, fresh and dry mass production, and water loss of chicory and land cress during storage. The experimental design was randomized in a 2 x 4 factorial scheme, with potassium silicate and sodium and potassium silicate stabilized with sorbitol, and four concentrations: 0 (control), 0.84, 1.68, and 2.52 g L −1 of Si. Tree foliar applications were carried out in four replications. Si foliar sprayings were applied every ten days; with the first application at 28 days after transplanting. It was determined that applying Si as a foliar spray was practical to increase the Si accumulation, plant growth, and biofortification as well as decrease the post-harvest water loss of land cress and chicory leaves. The Si concentration of 2.52 g L−1 as potassium silicate was recommended for foliar application in land cress and chicory. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate the effects of silicon (Si) leaf fertilization in different concentrations and sources on the production and quality of chard and kale. We carried out two experiments with chard and kale under a completely randomized design with four replicates in a 2 × 4 factorial scheme and two sources of silicon: potassium silicate and stabilized sodium potassium silicate with four concentrations of Si: 0.00; 0.84; 1.68 and 2.52 g L−1. We performed three leaf sprays every 10 days. The chard and kale were harvested at 48 and 54 days after transplanting the seedlings, respectively. Silicon leaf fertilization is important for leafy vegetables like chard and kale because it increases the content and the accumulation of Si and the growth and production of the vegetables. It also improved growth, productivity, and quality. The Silicon leaf fertilization of 2.52 g L−1 in the form of potassium silicate was the most notable. [ABSTRACT FROM AUTHOR]

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