Soil-profile distribution of primary and secondary plant-available nutrients under conventional and no tillage

Franzluebbers, Alan J.; Hons, Frank M.

doi:10.1016/s0167-1987(96)01056-2

Cited by 195 publications

(164 citation statements)

References 21 publications

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“…Franchini et al (1999) encontraram acima de 90 % do Al total de um solo ácido na forma orgânica, após a aplicação de resíduos vegetais. Entretanto, alguns autores não observaram efeitos do manejo do solo sobre os teores de Al 3+ , mesmo nas camadas superficiais (Klepker & Anghinoni, 1995;Bayer & Bertol, 1999 Sampaio (1987), Franzluebbers & Hons (1996) e Demaria et al (1999a, enquanto Siqueira (1989), Klepker & Anghinoni (1995), Rheinheimer et al (1998) e Vallejos M. (1998 não verificaram essas diferenças entre os sistemas de preparo do solo.…”

Section: Resultsunclassified

“…Apenas o AA não apresentou teores de K superiores aos da SD, na camada superficial do solo. Este resultado é discrepante aos encontrados por Franzluebbers & Hons (1996), Tognon et al (1997),…”

Section: Resultsunclassified

“…A ausência do revolvimento diminui a superfície de contato P-argilas, o que reduz a adsorção do P pelos óxidos de Fe e Al do solo e, conseqüentemente, a sua imobilização (Addiscott & Thomas 2000). O acúmulo de P na camada superficial da SD também foi verificado por Sampaio (1987); Siqueira (1989); Klepker & Anghinoni (1995); Siqueira (1995); Franzluebbers & Hons (1996); Tognon et al (1997);Cadavid et al (1998);Rheinheimer et al (1998); Sá (1998);Vallejos M. (1998); Bayer & Bertol (1999);Demaria et al (1999) e Sá (1999. CONCLUSÕES 1.…”

Section: Resultsunclassified

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Influência dos sistemas de preparo nas propriedades químicas e físicas do solo

Falleiro

Souza

Silva

et al. 2003

Rev. Bras. Ciênc. Solo

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RESUMOOs diferentes sistemas de preparo provocam alterações nas propriedades químicas, físicas e biológicas do solo, podendo requerer modificações no manejo e nas recomendações de adubação e calagem. Este trabalho avaliou os efeitos dos sistemas de preparo sobre as propriedades químicas e físicas do solo, em um experimento instalado em 1985. A área experimental vem sendo cultivada com culturas anuais em seis sistemas de preparo: semeadura direta (SD), arado de discos (AD), arado de aivecas (AA), grade pesada (GP), grade pesada + arado de discos (GP + AD) e grade pesada + arado de aivecas (GP + AA). O delineamento utilizado foi de blocos completos casualizados, com quatro repetições. As amostragens foram realizadas após a cultura do milho (safra 2001/02), nas profundidades de 0-5, 5-10 e 10-20 cm. As amostras de solo foram submetidas às análises químicas e físicas e as médias comparadas pelo teste de Tukey. Os sistemas de preparo influíram nas propriedades químicas e físicas do solo, com a maior parte das diferenças ocorrendo entre a SD e os demais sistemas. A densidade do solo foi superior na SD, em relação à dos demais tratamentos. Houve incremento nos valores de MO, pH, CTC efetiva, Ca 2+ , Mg 2+ , K e P, na camada superficial da SD, em relação às demais profundidades. A semeadura direta apresentou valores de Al 3+ inferiores aos dos demais tratamentos, na camada de 0-5 cm de profundidade, e superiores aos dos tratamentos AD, GP e GP + AA, na camada de 10-20 cm. Os tratamentos AD, GP, GP + AD e GP + AA apresentaram valores de K superiores aos dos tratamentos SD e AA, na camada de 0-5 cm de profundidade. O tratamento SD apresentou teores de P disponível superiores aos dos demais tratamentos, na camada de 0-5 cm de profundidade e na média das três profundidades.

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Section: Resultsunclassified

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Influência dos sistemas de preparo nas propriedades químicas e físicas do solo

Falleiro

Souza

Silva

et al. 2003

Rev. Bras. Ciênc. Solo

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“…Tiller et al [28] reported a 30% greater Cd concentration in spring wheat grain under direct drilling, compared to reduced tillage. Franzluebbers and Hons [29] reported that soil under a no-tillage system contained greater amounts of extractable Zn than under a conventional tillage system. In some other field studies, however, long-term tillage practices did not consistently influence Cd concentration in soils and crops [25,30,31].…”

Section: Introductionmentioning

confidence: 99%

Cadmium and Zinc Concentration in Grain of Durum Wheat in Relation to Phosphorus Fertilization, Crop Sequence and Tillage Management

Gao

Grant

2012

Applied and Environmental Soil Science

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Field experiments were conducted at two locations in Manitoba, Canada, to determine the effect of crop rotation, phosphorus (P) fertilization and tillage on grain yield and grain concentrations of Cd and Zn in durum wheat (Triticum durum L.). Compared to conventional tillage (CT), reduced tillage (RT) management decreased grain Cd and increased grain yield and grain Zn in half of the site-years. The type of preceding crops of spring wheat-flax or canola-flax had little influence. Rate and timing of P application had little effect on grain Cd, but increasing P rate tended to decrease grain Zn. No interactive effect was detected among tested factors. Grain Zn was not related to grain Cd, but positively to other nutrients such as Fe, Mn, P, Ca, K, and Mg. Both grain Zn and Fe correlated positively with grain protein content, suggesting protein may represent a sink for micronutrients. The study suggested that the tillage management may have beneficial effects on both grain yield and quality. Phosphorus fertilizer can remain available for subsequent crops and high annual inputs in the crop sequence may decrease crop grain Zn. Understanding the environment is important in determining the impact of agricultural management on agronomic and nutrient traits.

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“…Reduced tillage systems have been widely used in the midwest and southeastern United States to decrease soil loss caused by erosion and runoff (King 1983) and to reduce production costs through savings in fuel, time, labor, and machinery (Allmaras and Dowdy 1985). Other potential benefits include reduction in water use; improvements in soil hydrological properties; an increase in soil organic matter and nutrient availability; improvements in soil structure; an improved habitat for beneficial fauna; the potential to reduce weeds and crop pathogens; and a reduction in gaseous pollutants, respirable dust, and ground and surface water pollution (Baker and Laflen 1983;Blevins et al 1983;Blevins and Frye 1993;Franzluebbers and Arshad 1996;Franzluebbers and Hons 1996;Reicosky 1997;Lal et al 1998a, b;Baker et al 2005). Potential problems associated with reduced tillage systems have also been identified, including increased pest pressure, greater incidence of plant disease, herbicide carryover and runoff, and increased or different weed problems (Hinkle 1983;Koskinen and McWhorter 1986;Blevins and Frye 1993).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen supply from fertilizer and legume cover crop in the transition to no-tillage for irrigated row crops

Doane

Horwáth

Mitchell

et al. 2009

Nutr Cycl Agroecosyst

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In spite of potential benefits and positive assessments of reducing primary tillage operations, only a small part of irrigated row crops is currently managed using reduced tillage, for reasons that include concerns about its agronomic suitability for certain crop rotations. Three years of a tomato/corn rotation under standard and no-tillage management were used to understand the fate of a fertilizer and cover crop nitrogen (N) application. Uptake of both inputs was reduced under no-tillage during the year of application, in this case a tomato crop. As a result, more input N was retained in the soil in this system. The initial challenge of reduced tomato yields diminished as no-tillage management remained in place and the soil N reservoir developed. Corn production was not affected by tillage treatment. Inclusion of a legume cover crop increased the amount of fertilizer N retained in the soil over time, more so under no-tillage than under standard tillage, emphasizing the benefit of cover crops in reducing the amount of fertilizer required to maintain productivity. While acceptance of reduced tillage ultimately depends on economic performance, the results of this study support its agronomic viability for irrigated row crops.

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Soil-profile distribution of primary and secondary plant-available nutrients under conventional and no tillage

Cited by 195 publications

References 21 publications

Influência dos sistemas de preparo nas propriedades químicas e físicas do solo

Influência dos sistemas de preparo nas propriedades químicas e físicas do solo

Cadmium and Zinc Concentration in Grain of Durum Wheat in Relation to Phosphorus Fertilization, Crop Sequence and Tillage Management

Nitrogen supply from fertilizer and legume cover crop in the transition to no-tillage for irrigated row crops

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