Recuperação Florestal Em Uma Área Degradada Pela Exploração De Areia No Distrito Federal

Venturoli, Fábio; Venturoli, Sílvio

doi:10.5216/ag.v5i1.13831

Cited by 13 publications

(13 citation statements)

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“…No quesito sobrevivência foram avaliadas duas vezes, aos seis e trezes meses pós-plantio. Ao serem avaliadas aos seis meses após o plantio, foi verificada mortalidade de 4,40% (4) das mudas, referentes a 95,60% (87) de sobrevivência geral das mudas plantadas, sendo considerada aceitável dentro dos parâmetros para plantios comerciais, onde são aceitos mortalidade de até 20% (VENTUROLI & VENTUROLI, 2011;MALINOVSKI et al, 2006). A obtenção de dados ecofisiológicos e silviculturais de espécies nativas auxilia na escolha correta das espécies vegetais em programas de recuperação de áreas degradadas (FREITAS et al, 2014).…”

Section: Resultsunclassified

Produtividade E Qualidade Da Mandioca Em Função Do Manejo Em Terras Altas E Terras Baixas

Tagliapietra¹,

Silva²,

Tagliapietra³

et al. 2020

Impacto, Excelência E Produtividade Das Ciências Agrárias No Brasil

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Section: Resultsunclassified

Produtividade E Qualidade Da Mandioca Em Função Do Manejo Em Terras Altas E Terras Baixas

Tagliapietra¹,

Silva²,

Tagliapietra³

et al. 2020

Impacto, Excelência E Produtividade Das Ciências Agrárias No Brasil

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Section: Introductionmentioning

confidence: 99%

“…The use of the biopolymer hydrogel may represent a technology to regulate soil water availability to crops, which would favor the efficiency of absorption of nutrients and improve the yield (Azevedo et al, 2008;Mendonça et al, 2013). Hydrogels are biodegradable threedimensional polymeric networks that retain water in their structure, forming a gel, which is capable of hydrating and releasing water over time (Kaewpirom & Boonsang, 2006;Venturoli & Venturoli, 2011).The objective of the study was to analyze the use of the biopolymer hydrogel applied along with the seed in the optimization of fertilizer-N on wheat biomass and grain yields, under different conditions of agricultural year and succession systems of high and reduced residual-N release. …”

mentioning

confidence: 99%

Nitrogen efficiency in wheat yield through the biopolymer hydrogel

Mamann

Silva

Scremin

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TNitrogen use efficiency in wheat biomass and grain yields can be favored by the biopolymer hydrogel. The objective of the study was to analyze the use of the biopolymer hydrogel applied to the seed in the optimization of fertilizer-N on wheat biomass and grain yields, under different conditions of agricultural year and succession systems of high and reduced release of residual-N. In the study, two experiments were conducted, with different farming systems, soybean/wheat and maize/wheat, one to quantify the biomass yield rate and the other to determine grain yield. The experiments were conducted in the years 2014 and 2015, in a randomized block design with four replicates in a 4 x 4 factorial scheme, corresponding to hydrogel doses (0, 30, 60 and 120 kg ha ), applied as top-dressing. It is possible to improve the fertilizer-N efficiency by wheat using the biopolymer hydrogel for the production of biomass and grains. The highest wheat yield per kilogram of N supplied is obtained with 30 and 60 kg ha -1 of hydrogel, regardless of the year and succession system.Eficiência do nitrogênio na produtividade do trigo pelo biopolímero hidrogel ) aplicadas em cobertura, respectivamente, no sistema de sucessão soja/trigo e milho/trigo. É possível melhorar a eficiência de N-fertilizante pelo trigo com o uso do biopolímero hidrogel à produção de biomassa e grãos. A maior produtividade de trigo por quilograma de nitrogênio fornecido é obtida com 30 e 60 kg ha -1 de hidrogel, independente do ano e do sistema de sucessão. R E S U M O IntroductionWheat is one of the most produced cereals in the world (Arenhardt et al., 2015;Brezolin et al., 2017). Nitrogen (N) is essential to guarantee high yield of the wheat crop (Teixeira Filho et al., 2010;Prando et al., 2013), but is easily leached in rainy years (Teixeira Filho et al., 2010; Mantai et al., 2015) or volatilized in dry years (Rojas et al., 2012;Arenhardt et al., 2015). Thus, N use efficiency by wheat is eventually compromised, decreasing the yield and increasing the losses to the environment (Prando et al., 2013. Technologies that allow to improve yield with greater sustainability are necessary, especially in the increase of N use efficiency in the agricultural processes (Pinnow et al., 2013; Mantai et al., 2015).One of the ways to improve N absorption by plants is the maintenance of soil moisture, since the N supply depends, among other factors, on moisture, aeration and temperature, which interact in the cultivation systems (Rocha et al., 2008;Silva et al., 2015). The use of the biopolymer hydrogel may represent a technology to regulate soil water availability to crops, which would favor the efficiency of absorption of nutrients and improve the yield (Azevedo et al., 2008;Mendonça et al., 2013). Hydrogels are biodegradable threedimensional polymeric networks that retain water in their structure, forming a gel, which is capable of hydrating and releasing water over time (Kaewpirom & Boonsang, 2006;Venturoli & Venturoli, 2011).The objective of the study was t...

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“…One of the alternatives available in the market is the use of hydrogels in agriculture, which are polymers capable of absorbing large amounts of water and retaining it for a certain period, in order to reduce irrigation frequency, as they contribute to increasing water retention capacity of the soil (Venturoli & Venturoli, 2011). However, some hydrogel types without polymer biodegradability characteristics have left residues in the soil, causing salinization of the medium with their increasing use (Mendonça et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

In Situ Monitoring of a Controlled Release of Fertilizers in Lettuce Crop

et al. 2017

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Agriculture has sought ways to increase food production to meet global demands, intensifying dependence on natural resources. An alternative for intensive production has relied on the use of "smart" fertilizers that release nutrients in a controlled manner. Biodegradable polymers containing fertilizers has presented economic and environmental advantages when applied to the soil, as they release water and nutrients gradually to the environment without leaving residues. The objective of this study was to monitor the behavior of chitosan-clay hybrid microspheres, used as potassium nitrate soil ferti-releaser in lettuce cultivation. The experiment consisted of two treatments: (i) application of ferti-releasing chitosan-clay microspheres and (ii) use of conventional fertilization. Both treatments were monitored with TDR probes to measure electrical conductivity and soil moisture. The results indicate that both moisture and electrical conductivity are higher in soils treated with the ferti-releasing material. In addition, there was a gradual and homogenous release if compared to the conventional fertilization. The statistical analysis showed that the microspheres were efficient mainly for the controlled nitrogen release.

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Recuperação Florestal Em Uma Área Degradada Pela Exploração De Areia No Distrito Federal

Cited by 13 publications

References 0 publications

Produtividade E Qualidade Da Mandioca Em Função Do Manejo Em Terras Altas E Terras Baixas

Produtividade E Qualidade Da Mandioca Em Função Do Manejo Em Terras Altas E Terras Baixas

Nitrogen efficiency in wheat yield through the biopolymer hydrogel

In Situ Monitoring of a Controlled Release of Fertilizers in Lettuce Crop

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