Tillage and N-fertilizer influences on selected organic carbon fractions in a North Dakota silty clay soil

Awale, Rakesh; Chatterjee, Amitava; Franzen, David W.

doi:10.1016/j.still.2013.08.006

Cited by 96 publications

(52 citation statements)

References 55 publications

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“…Storage of SOM in cropping systems depends on the balance between C-additions primarily from crop residues and Closses through SOM decomposition (Machado et al, 2006;Awale et al, 2013). Therefore, the degree to which a tillage technique influences SOM turnover is generally determined by the frequency and timing of soil disturbance, depth of soil disturbance, and degree of soil-residue mixing (Cookson et al, 2008;Dou et al, 2008;Machado, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Besides, other studies have also indicated that the magnitude and direction of tillage-induced changes are often site-specific (Purakayastha et al, 2008;Morrow et al, 2016). Recently, microbiological properties and readily decomposable pools of SOM, such as particulate organic matter (POM), permanganate oxidizable C (POXC), water extractable organic matter (WEOM), microbial biomass C (MBC) and N (MBN), and microbial respiration, have received more attention due to their sensitivity to management practices than bulk SOM (Dou et al, 2008;Awale et al, 2013;Culman et al, 2013;Morrow et al, 2016;Wang et al, 2017). These physical, chemical, and microbiological pools constitute relatively small fractions of SOM but have rapid turnover rates of weeks to months or few years compared with more recalcitrant bulk SOM pools (Haynes, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…SOM pools can represent a multitude of interrelated soil processes and functions (Awale et al, 2013). For instance, POM plays major roles in soil aggregation and production of WEOM, and serves as an energy source for soil microbial biomass (Gregorich et al, 2000;Six et al, 2000;Zotarelli et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Soil Organic Carbon Pools as Early Indicators for Soil Organic Matter Stock Changes under Different Tillage Practices in Inland Pacific Northwest

2017

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Soil organic matter (SOM) is essential for sustaining soil health and crop productivity. However, changes in SOM stocks in response to agronomic practices are slow and show years later when it is too late for adjustments in management. Identifying early indicators of SOM dynamics will allow early management decisions and quick remedial action. The objectives of this study were to evaluate long-term effects of tillage intensity and timing on SOM pools and determine the most responsive SOM pools to tillage practice. Soil from a long-term (53 years) winter wheat (Triticum aestivum L.)-spring pea (Pisum sativum L.) rotation and undisturbed grass pasture (GP) in inland Pacific Northwest (iPNW) was sampled to evaluate the effect of four tillage systems [no-till (NT), disk/chisel (DT/CT), spring plow (SP), and fall plow (FP)] on soil organic carbon (SOC, proxy for SOM), total nitrogen (TN), particulate organic matter carbon (POM-C) and nitrogen (POM-N), permanganate oxidizable carbon (POXC), water extractable organic carbon (WEOC), total dissolved nitrogen (TDN), KCl-extractable nitrogen (KEN), microbial biomass carbon (MBC) and nitrogen (MBN), basal respiration (BR), carbon mineralization (Cmin), and metabolic quotient (qCO 2 ). GP had higher levels of SOC pools than cultivated treatments. On average, tillage significantly decreased SOC and TN by 28 and 26%, respectively, compared to GP. Among the cultivated soils, tillage had no significant effect on SOC and TN, except for DT/CT that had slightly higher SOC than FP (P = 0.08). On the contrary, NT and DT/CT significantly (P < 0.05) increased levels of POM-C, POM-N, POXC, WEOC, MBC, BR, Cmin, and qCO 2 over FP or SP. However, tillage did not affect TDN, MBN, and KEN. The C-pools (POM-C, POXC, MBC, WEOC, BR, and Cmin) were more strongly correlated with SOM than the N-pools (TDN, MBN, and KEN), with an exception to POM-N. Under wheat-pea rotation in the iPNW, reduced tillage systems (NT and DT/CT) have a potential to maintain or increase SOM, which can be assessed early through its physical (POM), chemical (POXC, WEOC), and microbiological (MBC, BR, Cmin) indicators. POXC and WEOC were the most sensitive indicators of tillage-induced changes in SOM dynamics.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil Organic Carbon Pools as Early Indicators for Soil Organic Matter Stock Changes under Different Tillage Practices in Inland Pacific Northwest

2017

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“…Among the agronomic approaches, it has been emphasized that short-and long-term agricultural management practices must be further developed for sustainable crop production, using N more efficiently. A number of these agricultural practices are based on the development of soil conservation, a technique known to improve the uptake of soil N by the plant [10,26] and to increase the content of soil organic matter (SOM) [27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Combined Effect of Tillage, Nitrogen Fertilization and Cover Crops on Nitrogen Use Efficiency in Winter Wheat

et al. 2017

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A field study was conducted in northern France over two consecutive years to evaluate the combined effect of conventional tillage (CT) vs no till (NT) with or without cover crops (cc) and nitrogen (N) fertilization on various agronomic traits related to N use efficiency in winter wheat. Five years after conversion of CT to NT, significant increases in N use efficiency, N utilization efficiency, N agronomic efficiency, N partial factor productivity, N apparent recovery fraction and N remobilization were observed under three N fertilization regimes (0, 161, 215 kg ha −1 ). It was also observed that grain yield and grain N content were similar under CT and NT. The N nutrition index was higher under NT at the three rates of N fertilization. Moreover, N use efficiency related traits were increased in the presence of cc both under NT and CT. Thus, agronomic practices based on continuous NT in the presence of cc, appear to be promising strategies to increase N use efficiency in wheat, while reducing both the use and the loss of N-based fertilizers.

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“…O SPD aumenta a eficiência energética do sistema de produção (Rusu, 2014), e o não revolvimento do solo, preconizado por este manejo, promove maior conservação de nitrogênio, potássio e carbono no sistema solo-planta (Villamil & Nafziger, 2015). Além disso, o SPD aumenta a matéria orgânica do solo, a porosidade total e o conteúdo de água disponível (Jemai et al, 2013), além de controlar o escorrimento superficial (Awale, 2013) e diminuir as perdas de solo. Para que os benefícios do SPD sejam atingidos, é importante que não ocorra revolvimento do solo, que se adote a rotação de culturas e que a palhada dos cultivos permaneça sobre a superfície do solo.…”

Section: Introductionunclassified

Produtividade e qualidade do feijoeiro cultivado sobre palhadas de gramíneas e adubado com nitrogênio em plantio direto

Amaral

Pinto

Flôres

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a influência de doses de nitrogênio em cobertura e das palhadas de milho, de milho consorciado com braquiária e de braquiária sobre a produtividade e a qualidade de grãos do feijoeiro. O experimento foi realizado em área irrigada, no cultivo de inverno, após cinco anos da implantação do sistema plantio direto, em Latossolo Vermelho eutroférrico de textura argilosa. Utilizou-se o delineamento de blocos ao acaso com parcelas subdivididas e três repetições. As parcelas foram constituídas por palha de milho, palha de milho consorciado com braquiária e palha de braquiária; enquanto as subparcelas, pelas doses de N em cobertura correspondentes a 0, 40, 80, 120 e 160 kg ha -1. Todos os tratamentos receberam 17 kg ha 1 de N na semeadura. O feijoeiro cultivado sobre palha de braquiária atinge maior produtividade de grãos e maior eficiência agronômica. Os atributos qualitativos dos grãos não são alterados pelas diferentes palhadas avaliadas. A aplicação do N em cobertura aumentou o teor de proteína bruta e o tempo de cozimento dos grãos de feijão, além da produtividade de grãos do feijoeiro até a dose de 136 kg ha -1 de N.Termos para indexação: Phaseolus vulgaris, Urochloa ruziziensis, Zea mays, cultivos de cobertura, eficiência agronômica, feijoeiro irrigado, tempo de cozimento. Yield and quality of common bean cultivated on grass straws and fertilized with nitrogen under no-tillageAbstract -The objective of this work was to evaluate the effect of top-dressed nitrogen fertilization and of the straws of corn crop, of corn intercropped with Brachiaria, and of Brachiaria on grain yield and quality of common bean. The experiment was carried out under irrigation, in winter cropping, after five years from the implementation of a no-tillage system, in a clayey Oxisol. A randomized block design with split plots and three replicates was used. The plots consisted of the straws of corn, of corn intercropped with Brachiaria, and of Brachiaria; while the split plots consisted of top-dressed N at levels corresponding to 0, 40, 80, 120, and 160 kg ha -1. All the treatments received 17 kg ha -1 N at sowing. Common bean cropped over Brachiaria straw reaches higher grain yield and has increased agronomic efficiency. The evaluated straws did not affect the qualitative attributes of common beans. The application of top-dressed N increased protein contents and cooking time of the beans, besides grain yield up to the level of 136 kg ha -1 N.

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Tillage and N-fertilizer influences on selected organic carbon fractions in a North Dakota silty clay soil

Cited by 96 publications

References 55 publications

Soil Organic Carbon Pools as Early Indicators for Soil Organic Matter Stock Changes under Different Tillage Practices in Inland Pacific Northwest

Soil Organic Carbon Pools as Early Indicators for Soil Organic Matter Stock Changes under Different Tillage Practices in Inland Pacific Northwest

Investigating the Combined Effect of Tillage, Nitrogen Fertilization and Cover Crops on Nitrogen Use Efficiency in Winter Wheat

Produtividade e qualidade do feijoeiro cultivado sobre palhadas de gramíneas e adubado com nitrogênio em plantio direto

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