Conservation tillage induced changes in organic carbon, total nitrogen and available phosphorus in a semi-arid alkaline subtropical soil

Zibilske, L. M.; Bradford, J. M.; Smart, J. R.

doi:10.1016/s0167-1987(02)00023-5

Cited by 175 publications

(103 citation statements)

References 60 publications

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“…This challenge during conversion from ST to CT, however, seemed to improve as CT remained in place, even though our data reflect only 3 years of this transition. Zibilske et al (2002) also reported results consistent with slow gains in soil fertility for a cotton/corn rotation. Tessier et al (1990) describe initial lower soil N fertility under no-tillage compared to standard tillage, although this also tended to improve with time; reduced fertility in this study did not seem to limit crop production.…”

Section: Resultsmentioning

confidence: 59%

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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Section: Resultsmentioning

confidence: 59%

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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“…Therefore, conservation tillage systems often result in greater stratification (i.e., variation with soil depth) of soil properties than conventional tillage. The soil properties affected include soil organic matter (Arshad et al 1990;Diaz-Zorita and Grove 2002;Jarecki and Lal 2005), microbial biomass (Dalal et al 1991;Salinas-Garcia et al 2002), total N (Grant and Bailey 1994;Grant and Lafond 1994), pH (Jacobsen and Westerman 1991;Crozier et al 1999), nitrate (Grant and Bailey 1994;Grant and Lafond 1994), extractable P (Bauer et al 2002;Zibilske et al 2002), K (Robbins and Voss 1991;Grant and Bailey 1994) and some micronutrients (Lavado et al 1999). Grant and Bailey (1994) reported higher surface (0-7.5 cm depth) concentrations of nitrate under zero tillage than conventional tillage, particularly on a sandy loam soil.…”

mentioning

confidence: 99%

Soil nutrient stratification and uptake by wheat after seven years of conventional and zero tillage in the Northern Grain belt of Canada

Lupwayi¹,

Clayton²,

O’Donovan³

et al. 2006

Can. J. Soil. Sci.

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Soil nutrient stratification and uptake by wheat after seven years of conventional and zero tillage in the Northern Grain belt of Canada. Can. J. Soil Sci. 86: 767-778. The distribution of NaHCO 3 -extractable nitrate-N, ammonium-N, phosphorus (P) and potassium (K) with soil depth (0 to 20 cm in 5-cm increments) at Fort Vermilion (58°23′N 116°02′W), Alberta, was described in the 7th and 8th years of conventional and zero tillage following placement of red clover (Trifolium pratense) green manure (GM), field pea (Pisum sativum), canola (Brassica rapa) and monoculture wheat (Triticum aestivum) residues. Soil nitrate-N concentrations under zero tillage were greater than those under conventional tillage in the 0-5 cm soil layer, below which the concentrations were similar. Ammonium-N and K concentrations followed a similar pattern. However, soil P concentrations were usually not different between tillage systems in the 0-5 cm soil layer, but the concentrations decreased more under zero tillage than under conventional tillage at lower depths. A notable exception for soil phosphate was under canola residues, where the concentration was greater under zero tillage than under conventional tillage at all depths. Uptake of N, P or K by a subsequent wheat crop was usually greater (though not always significantly) under zero tillage than under conventional tillage, and there were no interactions between tillage and crop residue. Therefore, differences in nutrient stratification between the two tillage systems did not translate into differences in wheat nutrient uptake. (58°23′N; 116°02′O), en Alberta, la septième et la huitième année d'un régime de travail ordinaire et de non-travail du sol après incorporation d'un engrais vert de trèfle rouge (Trifolium pratense) ou des résidus de pois de plein champ (Pisum sativum), de canola (Brassica rapa) et de monoculture du blé (Triticum aestivum). La concentration de N-nitrate est plus importante sans travail du sol que lorsque le sol est travaillé de la façon usuelle dans la couche de 0 à 5 cm de profondeur, en dessous laquelle les concentrations sont similaires. La concentration de N-ammonium et celle de K présentent des tendances analogues. La concentration de P ne varie généralement pas avec le type de travail du sol dans la couche de 0 à 5 cm, mais à une profondeur supérieure, elle diminue davantage quand le sol est travaillé. Les résidus de canola se distinguent du reste en ce sens que la concentration de phosphate dans le sol est plus élevée lorsque le sol reste intact et ce, à toutes les profondeurs. L'absorption du N, du P ou du K par le blé cultivé subséquemment est habituellement plus importante (mais pas toujours de manière significative) avec le non-travail du sol, comparativement au travail du sol, mais il n'existe pas d'interaction entre le régime de travail du sol et les résidus végétaux. Par conséquent, la variation de la stratification des éléments nutritifs entre les deux régimes ne fait pas fluctuer l'absorption des éléments nutritifs par le blé.

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“…Other studies have reported negative correlations between soil turning and soil N loss (Zibilske et al, 2002;Mielniczuk et al, 2003).…”

Section: Total Nitrogen Contentsmentioning

confidence: 91%

“…However, more conservative systems that prioritize the contribution of organic residues and less soil turning, such as NTSH, have been efficient in maintaining the soil N contents, preserving its quality (Zibilske et al, 2002;Lovato et al, 2004;Assis et al, 2006). Therefore, the quantification of N contents in HS in soil aggregates assists in studies on their dynamics, since the sizes of the aggregates denote the SOM time, stability, and sensitivity to soil management practices.…”

Section: Nitrogen and Humic Substances In Onion Under No-tillage Andmentioning

confidence: 99%

“…Some studies report the use of management systems with conservative practices and restricted soil turning, such as the NTSH, with a tendency of increasing the SOM contents, and reducing the losses of N of the CTS (Zibilske et al, 2002;Mielniczuk et al, 2003;Mrabet, 2006). The TN content found in the soil aggregates of the 0-5 cm soil layer at five years after implementing the NTSH increased to 36.8% (rye and cultivated-radish), 24.3% (oats), 37.3% (oats and cultivated-radish), 27.0% (control), 27.0% (rye), 23.8% (cultivated-radish), compared to the CTS.…”

Section: Total Nitrogen Contentsmentioning

confidence: 99%

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Nitrógeno total y sustancias húmicas en agregados del suelo cultivado con cebolla bajo siembra directa y preparación convencional

Santos¹,

Loss²,

Lourenzi³

et al. 2018

Rev. Colomb. Cienc. Hortic.

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Total nitrogen and humic substances in aggregates of soils with onion crops under no-tillage and conventional tillage systems Nitrógeno total y sustancias húmicas en agregados del suelo cultivado con cebolla bajo siembra directa y preparación convencional ABSTRACTThe objective of this study was to evaluate the soil total nitrogen (TN), and N contents in humic substances (HS) of the organic matter in aggregates of soils cultivated with onion under no-till system for horticulture (NTSH) and conventional tillage system (CTS), comparing with an area of forest. The evaluated treatments were natural vegetation (control), 100% black oats, 100% rye, 100% oilseed radish, intercrop of oilseed (14%) + rye (86%), intercrop of oilseed (14%) + black oats (86%), area under CTS of onion for ±37 years, and area with secondary forest for ±30 years. Five years after the NTSH implementation, undisturbed soil samples from the layers 0-5 cm, 5-10 cm, and 10-20 cm were collected; these samples presented aggregate sizes between 2.0 mm and 8.00 mm. The TN, and N contents of the HS were subdivided into fulvic acids (N-FA), humic acids (N-HA), and humin (N-HU) fractions. The change from CTS to NTSH increases the TN and N-HU contents in the 0-5 cm soil layer. The intercrop of oats and oilseed radish, used as soil plant cover species in NTSH, presented a greater increase in N-HU (0-20 cm) than the other treatments. Black oats, and natural Onion (Allium cepa L.) crops cover an area of approximately 60,000 ha annually in Brazil, producing approximately 1.6 million t of onion bulbs (IBGE, 2017). The southern region of the country produces 49% of the national production, where the state of Santa Catarina (SC) stands out as the largest national producer since 1990, with a profitable production that has becoming more sustainable due to organic production studies (ACATE, 2014).Soil conventional tillage system (CTS) is the most used system for onion crops in SC, comprising frequent turning of the soil (plowing, harrowing, subsoiling or scarification) in the preparation of the soil of the planting bed (Menezes et al., 2013). This soil preparation increases the occurrence of erosive processes and changes edaphic attributes, decreasing nutrient availability to plants and soil organic matter content (Loss et al., 2015). CTS is an important system for food, fiber and energy production, however, it impacts the soil; thus, the search for soil management and conservation practices has been a constant challenge. No-till system for horticulture (NTSH) has stood out as a promising alternative for onion crops (Menezes et al., 2013). Soil turning in NTSH is done only in the planting line, and cover plants are used for the production and maintenance of plant residues on the soil. This practice maintains or increases the vegetation presented a greater increased in N-HA, and N-FA contents, respectively, in the 10-20 cm layer, than the other treatments in NTSH and CTS. CTS with millet as soil plant cover presented a greater increase in N-FA (0-20 cm) contents tha...

show abstract

Conservation tillage induced changes in organic carbon, total nitrogen and available phosphorus in a semi-arid alkaline subtropical soil

Cited by 175 publications

References 60 publications

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

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

Soil nutrient stratification and uptake by wheat after seven years of conventional and zero tillage in the Northern Grain belt of Canada

Nitrógeno total y sustancias húmicas en agregados del suelo cultivado con cebolla bajo siembra directa y preparación convencional

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