Critical soil moisture range for a coffee crop in an oxidic latosol as affected by soil management

Silva, Bruno Montoani; Oliveira, Geraldo César de; Serafim, Milson Evaldo; Silva, Érika Andressa; Ferreira, Mozart Martins; Norton, L. D.; Curi, Nilton

doi:10.1016/j.still.2015.06.013

Cited by 37 publications

(45 citation statements)

References 74 publications

(140 reference statements)

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“…As larger pores decrease in diameter, they become active in water retention, especially at high water potentials. Similar results were found by Betz et al (1998) Silva et al, 1994;Guedes Filho et al, 2013;Silva et al, 2015). Within no-tillage plots at this site, the volume of large capillary pores was probably reduced as Bd increased, thus resulting in decreased soil water retention.…”

Section: Resultssupporting

confidence: 86%

“…Soil resistance to penetration was negatively correlated with soil water content (u) and positively correlated with Bd for both tillage practices as reported in other studies (da Silva et al, 1994;Betz et al, 1998;Leão et al, 2006;Chen et al, 2014;Silva et al, 2015). The increase in SRP with Bd could be attributed to higher friction between particles and/or aggregates associated with the higher effective stress resulting of soil …”

Section: Resultssupporting

confidence: 67%

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Corn stover harvest and tillage impacts on near-surface soil physical quality

Tormena

Karlen

Logsdon

et al. 2017

Soil and Tillage Research

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and Cherubin, Maurício R., "Corn stover harvest and tillage impacts on nearsurface soil physical quality" (2017). Publications from USDA-ARS / UNL Faculty. 1628Faculty. . http://digitalcommons.unl.edu/usdaarsfacpub/1628 Corn stover harvest and tillage impacts on near-surface soil physical quality Excessive harvest of corn (Zea mays L.) stover for ethanol production has raised concerns regarding negative consequences on soil physical quality. Our objective was to quantify the impact of two tillage practices and three levels of corn stover harvest on near-surface soil physical quality through the Least Limiting Water Range (LLWR). We evaluated no harvest, moderate and high stover harvest treatments within no-tillage and chisel plow plots following seven years of continuous corn production. Forty undisturbed soil samples were taken from the 0-7.5 cm deep layer within each treatment and used to determine water retention curves, soil resistance to penetration and bulk density values (Bd). No-tillage plots had higher average soil bulk density and resistance to penetration values, and were more affected by stover harvest than chisel plow plots. The results confirmed that soil resistance to penetration determined the lower limit of the LLWR regardless of tillage or stover treatment, whereas soil aeration controlled the upper limit only at Bd > 1.45 and Bd > 1.55 Mg m À3 for chisel plow and no-tillage, respectively. The LLWR was smallest for no-tillage with moderate or high corn stover harvest, indicating poor soil physical condition for plant growth, while the largest LLWR occurred with moderate stover harvest and chisel plowing. The introduction of alfalfa (Medicago sativa L.) into an extended rotation with no-tillage improved the LLWR by reducing the potential crop growth restriction due to resistance to penetration. Although bulk density values were only occasionally higher than the critical level (Bd = 1.60 Mg m À3 for chisel plow and Bd = 1.64 Mg m À3 for no-tillage), lower soil structure quality was evident with no-tillage under moderate or high stover harvest and with chisel plowing under high stover removal. The LLWR was more sensitive than available soil water content for detecting tillage and stover harvest effects on soil structural degradation.

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Section: Resultssupporting

confidence: 86%

Section: Resultssupporting

confidence: 67%

Corn stover harvest and tillage impacts on near-surface soil physical quality

Tormena

Karlen

Logsdon

et al. 2017

Soil and Tillage Research

View full text Add to dashboard Cite

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“…In studies on suitable techniques for cropland use and management, several Brazilian authors have suggested as soil quality indicators a large number of physical and mechanical properties as aeration, water storage capacity and penetration resistance (PR) (OLIVEIRA et al, 2004;ARAÚJO et al, 2007;SEVERIANO et al, 2011;LIMA et al, 2012;SERAFIM et al, 2013;SILVA et al, 2015a). These properties are chosen for being sensitive to impacts against soil (MENDES et al, 2006;PRAGANA et al, 2012;SILVA et al, 2015a).…”

Section: Introductionmentioning

confidence: 99%

Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

Silva

Santos

Nóbrega

et al. 2017

SCA

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The Cerrado biome has outstanding territorial relevance in the state of Piauí, in which weather conditions, relief and favorable soil has made this region one reference in food production. This study focused to evaluate the effects of different land uses, management systems and their respective terms on organic carbon content and physical properties of a Latossolo Amarelo (Oxisol) in the Southwestern Piauí state. The study was performed in the city of Uruçuí, situated in the southwestern Piauí state. We assessed nine farming areas with different backgrounds regarding land-use, management system and run time. The treatments consisted of areas under no-till for 3 and 6 years (NT3 and NT6), under pasture for 2 and 5 years (PA2 and PA6), under eucalyptus plantation for six and twelve years (EU6 and EU12), under conventional tillage for two and 8 years (CT2 and CT8) and under native Cerrado (NC), which represented a reference condition. Conversion of the native Cerrado into no-till and grazing areas increased soil organic carbon content over time.

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“…In sandy soils, the results found by Varennes et al (1997) were a little different because they found that with the increase of the polymer addition to the soil, a linear increase was obtained in soil water retention in the range from -0.01 to -1500 kPa.…”

Section: Resultsmentioning

confidence: 86%

Synthetic Polymers on Water Retention and Pore Distribuition in a Clayey Latosol

Benevenute

Passos

Melo

et al. 2017

RSA

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Abstract:The use of polymers is increasing at the agricultural area, however their effects on soil porosity have been little studied. The objective of this article is to analyze the effects of applied synthetic polymers on soil porosity and water retention of a Dystroferric Red Latosol. This study was conducted on undisturbed samples collected at a depth of 0.05 m in a Latosol beneath native forest. The samples were saturated with distilled water and polymers HyC, HyA, HyB diluted in water according to use recommendations for coffee plantations. These samples were then submitted to matric potentials of -2, -4, -6 and -10 kPa in the suction units and -33, -100, -500 and -1500 kPa in a Richards extractor. The models were fitted and pore size distribution estimates calculated. The data were subjected to variance analysis and the averages were compared using the Scott-knott test to a level of 5 %. Decreasing of large pores volume than 145 µm, was detected with the application of polymers HyA and B. However the HyB polymer promoted a reduction in the pore volume in the intermediate classes (2.9-0.6; 0.6-0.2 µm), that are responsible for water availability to plants. On the other hand the HyC polymer promoted an increase in the soil water retention.Keywords: soil porosity; synthetic polymers; soil water availability.RESUMO: O uso de polímeros é crescente no meio agrícola, porém seus efeitos na porosidade do solo são pouco estudados. O presente trabalho teve como objetivo analisar os efeitos da aplicação de polímeros sintéticos na porosidade e retenção de água de um Latossolo Vermelho Distroférrico muito argiloso. O estudo foi realizado em amostras indeformadas coletadas na profundidade de 0,05 m, em um Latossolo sob mata nativa. Amostras foram saturadas com água destilada e com os polímeros HyC, HyA, HyB diluídos em água conforme recomendações de uso para cultura do cafeeiro. Em seguida estas amostras de solos foram submetidas a potenciais matriciais de -2, -4, -6 e -10 kPa nas unidades de sucção e -33, -100, -500 e -1500 kPa nas câmaras de Richards. Foi realizada a modelagem de curvas de retenção de água e calculada a distribuição de poros por tamanho. Os dados foram submetidos a análises de variância e as médias comparadas pelo teste de Scott-knott ao nível de 5 %. Houve uma redução do volume de poros da classe de tamanho > 145 µm quando o solo foi saturado com os polímeros HyA e HyB. O polímero HyB promoveu uma redução do volume de poros das classes intermediárias (2,9-0,6; 0,6-0,2 µm), responsáveis pela disponibilidade de água para as plantas. Já o polímero HyC promoveu o aumento da retenção de água no solo.Palavras-chave: porosidade do solo; polímeros sintéticos; disponibilidade de água no solo.

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Critical soil moisture range for a coffee crop in an oxidic latosol as affected by soil management

Cited by 37 publications

References 74 publications

Corn stover harvest and tillage impacts on near-surface soil physical quality

Corn stover harvest and tillage impacts on near-surface soil physical quality

Impacts of land-use and management systems on organic carbon and water-physical properties of a Latossolo Amarelo (Oxisol)

Synthetic Polymers on Water Retention and Pore Distribuition in a Clayey Latosol

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