Adubação Silicatada Como Atenuante Do Estresse Hídrico No Crescimento E Trocas Gasosas Do Alface

Fátima, Reynaldo Teodoro de; Jesus, Edmar Gonçalves de; Guerrero, Amaralina Celoto; Rocha, Josinaldo Lopes Araújo; Brito, Marcos Eric Barbosa

doi:10.13083/reveng.v27i2.892

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…This is related to the mechanical protection, mainly attributed to the deposition of Si in the form of amorphous silica (SiO 2 nH 2 O) in the cell wall of the leaves, near the transpiration organs, forming a lignified double layer below the cuticle, due to foliar fertilization with Si (TORRES et al, 2015). Abe (2019), when studying Cucurbitaceae, observed the Si deposited in the trichome and in the cells surrounding the bases of watermelon leaves, which is associated with the greater structural rigidity of the tissues, leaving the leaves more erect and increasing the photosynthetic area, hence promoting greater water absorption (FÁTIMA et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Fertigated cultivation of mini watermelon subjected to salinity levels and foliar application of silicon

da Luz Neto,

da Silva,

Fonseca

et al. 2023

Rev. Caatinga

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The application of silicon (Si) represents one of the alternatives that can be used to mitigate the deleterious effects caused by salinity on plants in fertigated cultivation. The objective was to evaluate the effect of different levels of water salinity, associated with the use of sodium silicate on the production parameters and nutrient levels in the leaf and stem of mini watermelon in a protected environment. To conduct the experiment, a randomized block design was adopted, in a 6 x 2 factorial scheme, with 4 repetitions, with six levels of irrigation water salinity (1.05; 2.12; 3.26; 4.41; 5.91 and 7.32 dS m-1) and two types of Si application: without Si and in foliar solution. The following parameters were evaluated: plant height, stem diameter, number of leaves, leaf and stem fresh and dry mass; biometric variables and total soluble solids content in the fruits; and nutrient contents in leaves and stem. The use of Si associated with fertigation with different salinity levels promoted a positive response for peel thickness, ºBrix, fresh and dry mass of leaves, and Si accumulation in leaves and stem. Salinity alone promoted an increase in pulp weight, ºBrix of the fruits and potassium content in the stem, besides increasing the manganese content and inhibiting the zinc content in the leaves. There was a significant interaction for the manganese content in the stem, with a positive response in the absence of foliar-applied Si and a negative response in the presence of foliar-applied Si under different levels of salinity.

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Section: Resultsmentioning

confidence: 99%

Fertigated cultivation of mini watermelon subjected to salinity levels and foliar application of silicon

da Luz Neto,

da Silva,

Fonseca

et al. 2023

Rev. Caatinga

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“…In hydroponic lettuce cultivation, the use of sodium metasilicate in the nutrient solution reduced the development of plants with the intensity of the effect varying with the cultivar (NEVES et al, 2020). Still on lettuce, the application of potassium silicate improved physiological processes in conditions of water restriction, with a better dose in the estimated dose of 125 mg L -1 (FATIMA et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Development of cauliflower seedlings due to the increase of silicon in substrate

et al. 2021

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The production of seedlings is an important step in the establishmentof the crop, with repercussions on yield, whose application of Si can improve phytosanitary and performance characteristics.The objective of the study was to analyze the increase of silicon in substrate on the development of seedlings of Brassica oleraceavar. botrytis. The experiment carried out in randomized blocks, with five amounts of silicon (0, 25, 50, 75 and 100 g kg-1of substrate) and four replications. Silicon oxide (98% SiO2) used, mixed with the substrate with subsequent filling of the polyethylene trays (128 cells) and seeding. The trays kept in a greenhouse. At 30 days after sowing, the height of seedlings, number of leaves, fresh weight of leaves and stem, dry weight of leaves, stem and root evaluated. The data subjected to analysis of variance by the F test and regression analysis. Of the variables analyzed, only the dry root mass did not show a significant difference. Quadratic models can represent the variation in components. Seedling height increased with the increase of silicon up to thedoseof 75 g kg-1. Other variables showed increases up to a dose of 50 g kg-1. The increase of silicon in the substrate was efficient in the development of seedlings of Brassica oleraceavar. botrytisin an amount of up to 50 g kg-1of substrate.

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“…The reduction in Gs during water deficit has been described by several authors in tree species such as E. myrcianthes [ 3 ] and Dipteryx alata Vogel [ 5 ], varying the intensity of the response according to the studied species. A positive effect of leaf application of Si was also observed in Gs for lettuce seedlings subjected to stress, with an increase in Gs values when increasing silicon doses [ 14 ].…”

Section: Discussionmentioning

confidence: 99%

Do Silicon and Salicylic Acid Attenuate Water Deficit Damage in Talisia esculenta Radlk Seedlings?

Figueiredo,

Scalon,

Santos

et al. 2023

Plants

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Water deficit is one of the factors that most influence plant growth and yield. Thus, this study aimed to evaluate the effect of silicon and salicylic acid application and water deficit on the growth and photosynthetic and osmoregulatory metabolism of Talisia esculenta Radlk. seedlings and their recovery potential after the resumption of irrigation. Six treatments were performed: irrigation, irrigation suspension, irrigation suspension + silicon at 0.5 g L−1, irrigation suspension + silicon at 1.0 g L−1, irrigation suspension + salicylic acid at 50 mg L−1, and irrigation suspension + salicylic acid at 100 mg L−1. The evaluations were carried out at the beginning of the experiment, at 10 and 15 days after irrigation suspension, when the seedlings showed a photosynthetic rate close to zero, and at recovery. The plants were subjected to water restriction for up to 15 days, then re-irrigated until the recovery point, which was monitored based on the photosynthetic rate. Silicon application attenuated the harmful effects of water deficit on gas exchange and initial fluorescence, promoted proline accumulation in the leaf and root, and provided higher seedling quality. Salicylic acid application contributed to the maintenance of the relative water content of leaves during the water deficit period. Silicon and salicylic acid applications can attenuate the harmful effects of water stress, with silicon being the most effective agent in maintaining its growth and metabolism.

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Adubação Silicatada Como Atenuante Do Estresse Hídrico No Crescimento E Trocas Gasosas Do Alface

Cited by 4 publications

References 6 publications

Fertigated cultivation of mini watermelon subjected to salinity levels and foliar application of silicon

Fertigated cultivation of mini watermelon subjected to salinity levels and foliar application of silicon

Development of cauliflower seedlings due to the increase of silicon in substrate

Do Silicon and Salicylic Acid Attenuate Water Deficit Damage in Talisia esculenta Radlk Seedlings?

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