Effects of super-absorbent polymer on dry matter accumulation and nutrient uptake of<i>Pinus pinaster</i>container seedlings

Liu, Fang‐Chun; Ma, Hao; Xing, Shangjun; Du, Zhen‐Yu; Ma, Bin; Jing, Dawei

doi:10.1007/s10310-012-0340-7

Cited by 25 publications

(21 citation statements)

References 27 publications

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“…A 10 cm soil–SAP mixture layer was designed 20 cm below the soil surface. The ratio of SAP is 0.6% (Han et al ., ; Liu et al ., ). In the course of loading the soil sample, three‐rod TDR (time domain reflectometry) probes were equidistantly immersed at different depths in the soil.…”

Section: Methodsmentioning

confidence: 97%

Effects of Superabsorbent Polymers on Infiltration and Evaporation of Soil Moisture Under Point Source Drip Irrigation

Han

Yang

et al. 2015

Irrigation and Drainage

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The application of superabsorbent polymers (SAPs) in agriculture can enhance water use efficiency and ease water shortage in agriculture. In this study, by applying SAPs to the middle layer of the soil root zone, the effects of SAPs on moisture distribution during infiltration and evaporation under the condition of point source irrigation were investigated. The results show that during infiltration, the wetting front formed an accident change zone in the horizontal direction; in the bottom layer, the horizontal infiltration rate is greater than the vertical infiltration rate due to the effect of SAPs from the middle layer; the soil water content in the middle layer increased remarkably by 23.6%, higher than that in the surface and bottom layers; during evaporation, the soil water content changed significantly in the surface layer due to strong evaporation on the surface, it was largest and quite even in the SAP-soil mixture layer, and decreased the least in the bottom layer due to water storage in the mixture layer. Therefore, SAP application in the crop root layer is helpful to conserve soil water content in the crop root zone, inhibit evaporation of soil water in the lower layer and facilitate moisture conservation. RÉSUMÉ L'application de polymères super-absorbants (SAP) dans l'agriculture peut améliorer l'utilisation de l'eau et faciliter la gestion de la pénurie d'eau dans l'agriculture. Nous avons étudié les incidences d'un SAP appliqué sur la couche médiane de la zone racinaire d'un sol sur l'évaporation et l'infiltration au droit d'un goutteur d'irrigation. Les résultats montrent que lors de l'infiltration, le front d'humectation subit un accident dans le sens horizontal; dans la couche inférieure, le taux d'infiltration horizontal est supérieur à la vitesse d'infiltration verticale sous l'effet du SAP de la couche centrale; la teneur en eau du sol dans la couche intermédiaire a augmenté de 23.6%, supérieure à celle de la surface et des couches inférieures; au cours de l'évaporation, la teneur en eau du sol a changé de manière significative dans la couche de surface en raison d' une forte évaporation; la variation a été la plus importante dans la couche de mélange SAP-sol, et la diminution de teneur en eau a été la plus petite dans la couche inférieure en raison du stockage d'eau dans la couche avec SAP. Par conséquent, l'application de SAP dans la zone racinaire est utile à y conserver l'humidité du sol et à inhiber l'évaporation de l'eau dans la couche inférieure.

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Section: Methodsmentioning

confidence: 97%

Effects of Superabsorbent Polymers on Infiltration and Evaporation of Soil Moisture Under Point Source Drip Irrigation

Han

Yang

et al. 2015

Irrigation and Drainage

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“…Being swollen in water, cross‐linked polymers (hydrogels) favor accumulation of moisture in eroded sandy and sandy loamy soils of arid regions, thus preventing gravity runoff and evaporation of water 18–19 . Additionally, cross‐linked polymers are able to increase the digestibility of mobile plant nutrients, 20,21 bind toxic compounds, including heavy metal ions, 22,23 and ensure a prolonged release of fungicides and pesticides 24,25 . The capacity of hydrogels to water, which 300–500 times exceeds the weight of polymer itself, is dependent on many factors, including the content of ionic groups in macromolecules, a degree of cross‐linking, composition of the absorbed solution, and a particle size of hydrogel 26–27 …”

Section: Introductionmentioning

confidence: 99%

Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Smagin

Панова

Ilyasov

et al. 2021

J of Applied Polymer Sci

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New synthetic soil conditioners for anti‐erosion protection of soils in the form of microgel copolymers of N‐isopropylacrylamide and acrylic acid (PAA#) and their interpolyelectrolyte complexes (IPEC#) with different surface charges are tested for optimization of water retention and porous structure in two samples of soil substrates. Water retention curves (WRCs) are used as a fundamental thermodynamic indicator of water holding capacity in soil substrates treated by new polymeric materials. Soil‐hydrological constants, as well as specific surface parameters and pore distribution curves are calculated from the WRCs using the van Genuhten model and the Voronin method in the author's modification. PAA# and anionic IPEC# with high swelling degree at a dose of 1% (by weight) increase field water capacity, available soil water range and specific surface area by 5–6 times for quartz sand, along with reorganizing its structure towards micropore dominance. For loamy sand, the same treatment was less effective with a twofold increase in field moisture capacity, double or triple increase of specific surface area, and an almost constant range of available soil water due to the strong increase of wilting point parameter. Weakly swelling linear polyacrylic acid and cationic IPEC# did not significantly affect properties of both mineral substrates.

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“…This product provides an improved water retention to the substrate, making it gradually available to the roots (VICENTE et al, 2015). It is a conditioner able to improve the chemical and physical substrate properties (NAVROSKI et al, 2016a), and its incorporation into the substrate have been used for producing forest seedlings (AZEVEDO et al, 2015;BERNARDI et al, 2012;LIU et al, 2013;MALDONADO-BENITEZ et al, 2011;MEWS, 2014;NAVROSKI et al, 2016bNAVROSKI et al, ,c, 2015SOUSA et al, 2013). The use of hydrogel incorporated to the substrate is a promising alternative for improving the rooting of eucalyptus mini-cuttings, mainly in low-rooting materials (AZEVEDO et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effect of the hydrogel incorporation on different substrates on the rooting and quality of clonal Eucalyptus seedlings

Neres¹,

Azevedo²,

Souza³

et al. 2019

Sci. For.

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A propagação vegetativa exige maior controle sobre o substrato, tendo reflexo qualitativo e quantitativo dentro de toda cadeia produtiva de mudas até o plantio. Este trabalho teve como objetivo avaliar a rizogênese e qualidade de mudas clonais de eucalipto produzidas em três diferentes substratos comerciais com e sem incorporação do hidrogel. A pesquisa foi realizada no viveiro da empresa R&S Florestal, Planaltina, Distrito Federal. Para a produção das mudas foram utilizados os substratos comerciais: Vivatto Slim Plus  , Bioplant  e Tropstrato Florestal  , com e sem hidrogel (2 g L -1 ) da marca Forth Gel  , e o material genético (miniestacas) utilizado foi o clone VM01. Foi utilizado o delineamento inteiramente casualizado (DIC), com seis tratamentos em esquema fatorial 3x2 (três tipos de substrato x presença e ausência de hidrogel), com quatro repetições. Aos 35 dias após a emergência (DAE) avaliou-se a rizogênese das miniestacas e aos 101 DAE foi avaliado o desenvolvimento das mudas. A eficiência do hidrogel para a melhoria da qualidade da rizogênese das miniestacas e desenvolvimento das mudas depende das características físicas e químicas dos substratos.Palavras-chave: minisestaquia, hidrogel, análise de substratos. Abstract:Vegetative propagation requires greater control over the substrate, having a qualitative and quantitative reflection within the entire seedlings production chain until the planting. This work aimed to evaluate the rooting and quality of clonal eucalyptus seedlings grown on three different commercial substrates with and without hydrogel incorporation. The research was carried out at the nursery of the R&S Florestal company, Planaltina, Federal District. For producing the seedlings, the following commercial substrates were used: Vivatto Slim Plus  , Bioplant  and Tropstrato Florestal  , with and without hydrogel (2 g L -1 ), Forth Gel  , and the genetic material (mini-cuttings) used was the clone VM01. A completely randomized design was used, with six treatments in a 3x2 factorial scheme (three types of substrate x presence and absence of hydrogel), with four replications. At 35 days after cutting, the rooting of the mini-cuttings was evaluated, and the seedlings development was evaluated at 101 DAE. The hydrogel efficiency for improving the rooting quality of mini-cuttings and seedlings development depends on the physical and chemical properties of the substrates.

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Effects of super-absorbent polymer on dry matter accumulation and nutrient uptake ofPinus pinastercontainer seedlings

Cited by 25 publications

References 27 publications

Effects of Superabsorbent Polymers on Infiltration and Evaporation of Soil Moisture Under Point Source Drip Irrigation

Effects of Superabsorbent Polymers on Infiltration and Evaporation of Soil Moisture Under Point Source Drip Irrigation

Water retention in sandy substrates modified by cross‐linked polymeric microgels and their complexes with a linear cationic polymer

Effect of the hydrogel incorporation on different substrates on the rooting and quality of clonal Eucalyptus seedlings

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