Organic matter and polyacrylamide amendment of Norfolk loamy sand

Busscher, W. J.; Novak, J. M.; Caesar‐TonThat, Thecan

doi:10.1016/j.still.2006.03.023

Cited by 33 publications

(19 citation statements)

References 36 publications

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“…Thus, the preservation of a high stability of large-diameter aggregates is crucial for the maintenance of soil productivity (An et al, 2010). Busscher et al (2007), reported higher aggregation with increasing PAM concentrations by the application of anionic PAM (12 Mg mol -1 and 35 % charge density) to a cemented sandy loam soil, at rates of 30 and 120 mg kg -1 . On the other hand, Green et al (2000) found that the molecular weight of anionic PAM was effective for the stabilization of coarsetexture soils, unlike when applied to soil with a fine texture.…”

Section: Aggregate Size Distributionmentioning

confidence: 99%

Structural quality of polyacrylamide-treated cohesive soils in the coastal tablelands of Pernambuco

Melo

Almeida

Souza

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYWater-soluble polymers are characterized as effective flocculating agents due to their molecular features. Their application to soils with horizons with structural problems, e.g, a cohesive character, contributes to improvements in the physical quality and thus to the agricultural suitability of such soils. The purpose of this study was to evaluate the structural quality of soils with cohesive horizons of coastal tablelands in the State of Pernambuco treated with polyacrylamide (PAM) as chemical soil conditioner. To this end, three horizons (one cohesive and two noncohesive) of a Yellow Argisol (Ultisol) were evaluated and to compare cohesive horizons, the horizon of a Yellow Latosol (Oxisol) was selected. The treatments consisted of aqueous PAM solutions (12.5; 50.0; 100.0 mg kg -1 ) and distilled water (control). The structural aspects of the horizons were evaluated by the stability (soil mass retained in five diameter classes), aggregate distribution per size class (mean weight diameter-MWD, geometric mean diameter -GMD) and the magnitude of the changes introduced by PAM by measuring the sensitivity index (Si). Aqueous PAM solutions increased aggregate stability in the largest evaluated diameter class of the cohesive and non-cohesive horizons, resulting in higher MWD and GMD, with highest efficiency of the 100 mg kg -1 solution. The cohesive horizon Bt1 in the Ultisol was most sensitive to the action of PAM, where highest Si values were found, but the structural quality of the BA horizon of the Oxisol was better in terms of stability and aggregate size distribution.Index terms: anionic polymer, coagulation/flocculation, aggregate stability.( RESUMO: QUALIDADE ESTRUTURAL DE SOLOS COESOS DOS TABULEIROS COSTEIROS DE PERNAMBUCO TRATADOS COM POLIACRILAMIDAPolímeros solúveis em água caracterizam-se como eficientes agentes floculantes relacionados aos seus aspectos moleculares, cuja aplicação em solos com horizontes que apresentam problemas estruturais, como acontece com o caráter coeso, favorece a melhoria da qualidade física e, assim, amplia a aptidão agrícola desses solos. Esta pesquisa teve como objetivo avaliar a qualidade estrutural de solos com horizontes coesos dos Tabuleiros Costeiros de Pernambuco com a aplicação de Poliacrilamida (PAM) como condicionador químico. Para isso, foram avaliados três horizontes (um coeso e dois não coesos) de um Argissolo Amarelo e, para fins comparativos de horizontes coesos, foi selecionado o horizonte de um Latossolo Amarelo. Como tratamentos, foram aplicadas soluções aquosas de PAM (12,5; 50,0; e 100,0 mg kg -1 ) e água destilada (controle). Os aspectos estruturais dos horizontes foram avaliados pela estabilidade (massa de solo retida em cinco classes de diâmetro), distribuição de agregados por classe de tamanho (diâmetro médio ponderado -DMP, diâmetro médio geométrico -DMG) e magnitude das alterações promovidas pela PAM, medindo o índice de sensibilidade (Is). As soluções aquosas de PAM aumentaram a estabilidade de agregados na maior classe de diâmetro avaliada dos...

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Section: Aggregate Size Distributionmentioning

confidence: 99%

Structural quality of polyacrylamide-treated cohesive soils in the coastal tablelands of Pernambuco

Melo

Almeida

Souza

et al. 2014

Rev. Bras. Ciênc. Solo

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“…6d). Other researchers have reported positive effects of PAM on water and nutrient retention, especially by decreasing nutrient losses from leaching (Busscher et al, 2006;Entry and Sojka, 2003;Levy et al, 1991).…”

Section: Effect Of Pam On Phosphorus Movement In the Columnmentioning

confidence: 98%

“…However, differences among the three PAM treatments were not significant. Additionally, decreased leachate volume (along with decreased runoff) indicated that more water was being held in the soil, suggesting that the PAM was increasing aggregation and soil water holding capacity (Busscher et al, 2006). The mean TP losses due to leaching from each PAM treatment over all storm events were significantly lower than the control only at a ¼ 0.10 by SNK test, but not at a ¼ 0.05 s (Table 6), possibly because of high experimental variability among replications.…”

Section: Effect Of Pam On Phosphorus Movement In the Columnmentioning

confidence: 99%

“…Since the 1990s, PAM has become an important treatment for soil and water conservation in the USA, particularly in furrow irrigation systems. As a soil amendment, PAM has been widely studied (Aase et al, 1998;Barvenik, 1994;Entry and Sojka, 2003;Flanagan et al, 2003;Canady, 2006a, 2006b;Lentz et al, 1996), because of its unique characteristics for improving soil physical properties, enhancing aggregate stability, maintaining high infiltration rates, and reducing runoff and soil loss across a range of soil types (Busscher et al, 2006(Busscher et al, , 2007Green et al, 2004;Levy and Miller, 1999).…”

Section: Introductionmentioning

confidence: 99%

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Application of polyacrylamide to reduce phosphorus losses from a Chinese purple soil: A laboratory and field investigation

Jiang

Teng

Wei

et al. 2010

Journal of Environmental Management

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“…Not only was development soil productivity had constrained, but also the environmental deterioration and economic losses were getting worse and worse. Soil amendments have been reported to change sandy soil texture in order to increase water holding capacity [1]. Adding organic fertilizers in sandy soil, the growth of the plant growth was affected [2,3].…”

Section: Introductionmentioning

confidence: 99%

Effect of organic fertilizers used in sandy soil on the growth of tomatoes

Hou¹,

Yan³

et al. 2013

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In order to reveal the regulating capacity of organic fertilizers on sandy soil, pots experiments were carried out. The growth of tomatoes planted on sandy soil amended by organic fertilizers was measured. Organic fertilizers can be helpful to improve the plant height, stem diameter, the aerial parts fresh weight, root fresh weight, leaf photosynthetic rates and photosynthesis, and lay a good foundation for the growth of tomatoes. The effect of organic fertilizer is the most significant. Among all the treatments of adding 2.5%, 5%, 10% organic fertilizers, adding 10% organic fertilizers are the best. It can significantly enhance the growth and photosynthesis of tomatoes, and it is among the best of these three soil treatments for sandy soil.

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Organic matter and polyacrylamide amendment of Norfolk loamy sand

Cited by 33 publications

References 36 publications

Structural quality of polyacrylamide-treated cohesive soils in the coastal tablelands of Pernambuco

Structural quality of polyacrylamide-treated cohesive soils in the coastal tablelands of Pernambuco

Application of polyacrylamide to reduce phosphorus losses from a Chinese purple soil: A laboratory and field investigation

Effect of organic fertilizers used in sandy soil on the growth of tomatoes

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