Retenção de água em substratos com hidrogel: influência das características do material e nível de adubação

Neves, Orlando Sílvio Caires; Avrella, Eduarda Demari; Paim, Luciana Pinto; Fior, Claudimar Sidnei

doi:10.5902/1980509843240

Cited by 2 publications

(1 citation statement)

References 7 publications

(7 reference statements)

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“…Hydrogel is a soil conditioner that can optimize the use of fertilizers by retaining and making available a greater concentration of macronutrients in the substrate, promoting greater plant development (Navroski et al, 2015). In addition, the maintenance of moisture in the root zone of plants, under the influence of hydrogel (Neves et al, 2021), may favor the dilution of salts and absorption of water (Lessa et al, 2019), making the water-retaining polymer a possible mitigator of salt stress. In this context, the objective was to evaluate the use of hydrogel to mitigate the damage caused by the salinity of irrigation water on the emergence, growth, and thermal index of Tagetes patula L. seedlings.…”

Section: Introductionmentioning

confidence: 99%

Hydrogel as mitigator of salt stress during the establishment of Tagetes patula L. seedlings

Sousa

Lacerda

et al. 2022

Rev. bras. eng. agríc. ambient.

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Hydrogels favor moisture retention in the substrate and can attenuate the effects of salt stress on the production of potted plants. In this context, this research sought to evaluate the use of hydrogel to mitigate the damage caused by the salinity of irrigation water on the emergence, growth, and thermal index of Tagetes patula L. seedlings. The research was carried out in a greenhouse, in September 2020, in the municipality of Fortaleza, Ceará State, Brazil. The design used was randomized blocks in a split plot. The plots corresponded to seven levels of electrical conductivity of the irrigation water - ECw (0.5, 1.0, 2.0, 3.0, 4.0, 5.0, and 6.0 dS m-1) and the subplots corresponded to four hydrogel concentrations (0, 1.0, 2.0, and 3.0 g L-1), with five replicates and each subplot consisted of 27 seeds. The application of 3.0 g hydrogel L-1 of substrate favored the production of leaves and reduced the thermal index in plants associated with the increase in the salinity of the substrate up to 6.0 dS m-1. The use of 3.0 g L-1 hydrogel increases seedling height, leaf dry mass, and total dry mass compared to treatments without water-retaining polymer, even at moderate (2.0 to 3.0 dS m-1) and high (4.0 to 6.0 dS m-1) salinity levels, thus indicating a possible effect of mitigation of damage caused by the salinity of the irrigation water. However, the intensity of this mitigating effect decreases at higher levels of salt stress.

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Section: Introductionmentioning

confidence: 99%

Hydrogel as mitigator of salt stress during the establishment of Tagetes patula L. seedlings

Sousa

Lacerda

et al. 2022

Rev. bras. eng. agríc. ambient.

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Hydrogel polymer in yellow melon plants cultivated under different irrigation depths

Lins,

Oliveira,

Fernandes

et al. 2024

Rev. bras. eng. agríc. ambient.

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Water is an essential resource in agriculture, and its efficient use is fundamental to ensuring the sustainability of the sector. The use of more rational and sustainable technologies is an important strategy for optimizing the use of water in agriculture. In view of the above, the aim of this study was to evaluate the effect of different irrigation depths on both chemical and physical variables of melon fruits, and yield, in plants grown with or without hydrogel application. The experiment was conducted in a randomized block design with ten treatments and four blocks. The treatments were arranged in a 5 × 2 factorial scheme, referring to five irrigation depths (50, 75, 100, 125, and 150% of crop evapotranspiration - ETc), and with or without hydrogel application (4 g L-1). The irrigation system used was drip irrigation. Irrigation depths positively influenced the variables evaluated, with the highest yield (39,075.69 kg ha-1) obtained with the highest water depth of 394 mm (150% ETc), while the use of hydrogel reduced the internal cavity of the fruit. The fruit physical characteristics (pulp thickness and internal cavity) showed positive linear increments within the interval of irrigation depth evaluated. Fruit electrical conductivity showed a linear decrease as the irrigation depths increased, while the pH was described by a quadratic polynomial equation. The use of hydrogel was not enough to mitigate the negative effects of deficit irrigation. However, the increase in irrigation depths improved the quality and yield of melon fruit.

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Retenção de água em substratos com hidrogel: influência das características do material e nível de adubação

Cited by 2 publications

References 7 publications

Hydrogel as mitigator of salt stress during the establishment of Tagetes patula L. seedlings

Hydrogel as mitigator of salt stress during the establishment of Tagetes patula L. seedlings

Hydrogel polymer in yellow melon plants cultivated under different irrigation depths

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