Soil Organic Matters

Powlson, D. S.; Brookes, Philip C.; Whitmore, A. P.; Goulding, Keith; Hopkins, D. W.

doi:10.1111/j.1365-2389.2010.01338.x

Cited by 20 publications

(7 citation statements)

References 29 publications

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“…While addressing the global warming outcomes, one should consider soil enzyme activities that may affect recalcitrant humid matter 27 owing to their association with changes in temperature 8 . The balance between these two competing processes determines how much C is sequestered and stabilized as well as contributing to microbial diversity and activity, and a host of enzyme properties that determine soil fertility and plant productivity 28 . Soil enzymes have significant association with temperature, moisture 29,30 , soil porosity, and GHG emissions 31 .…”

Section: Discussionmentioning

confidence: 99%

Soil health indicators impacted by long-term cattle manure and inorganic fertilizer application in a corn-soybean rotation of South Dakota

Ozlu

Sandhu

Kumar

et al. 2019

Sci Rep

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Manure impacts labile pools of soil organic carbon (SOC) and nitrogen (N) which can influence soil microbial composition (MCC) and enzyme activities, and hence soil health. The present study was conducted to investigate the impacts of long-term dairy manure and inorganic fertilizers (INF) on soil carbon (C) as well as nitrogen (N) fractions, enzyme activities, and microbial community structure in different time horizons at planting (P), one month after planting (1MAP), and after harvesting (H) under corn ( Zea mays L.)-soybean ( Glycine max L.) rotation. Study treatments included three manure application rates (low, phosphorus-based recommended rate; medium, nitrogen-based recommended rate; and high, the double rate of medium nitrogen based recommended rate), two INF rates (medium only nitrogen additions; and high nitrogen, phosphorus, potassium, zinc, and sulfur additions) and a control (no application of manure and/or inorganic fertilizer). In comparison to the INF, the dairy manure not only significantly increased chemical fractions of C and N but also impacted the enzyme activities. Average urease activity after manure was applied was shown to be 26.8% higher than it was with INF applied at planting. The β-Glucosidase activity was 6 and 14% higher with manure than it was with INF at 1MAP and harvesting, respectively. The cold-water extractable nitrogen (CWEN) was enhanced with high manure rate at all timings of sampling compared to the high fertilizer rate (53%), and CK (90%). Principal component analysis indicated that MCC under manure differed from those under the INF treatments. The total bacteria/total fungi ratio at planting was increased with the INF compared to the manure addition. Pearson’s correlation analysis showed that CWEC, CWEN, and enzyme activities especially β-Glucosidase activity were the key determinants of MCC. Data from this study showed that, compared to inorganic fertilizers, manure can be beneficial in enhancing soil health indicators.

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Section: Discussionmentioning

confidence: 99%

Soil health indicators impacted by long-term cattle manure and inorganic fertilizer application in a corn-soybean rotation of South Dakota

Ozlu

Sandhu

Kumar

et al. 2019

Sci Rep

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“…Cette situation est certes dépendante des caractéristiques intrinsèques des sols tropicaux, au regard de leur faible teneurs en argiles avec une forte dominance de la kaolinite et de leur faible statut organique (Ouattara et al, 2009). Mais elle est également liée aux conditions climatiques aggravées par les pratiques culturales inadaptées (agriculture de type minier) et par la forte pression sur les ressources en sol (Powlson et al, 2011 ;Meshesha et al, 2012). Au Burkina Faso, cette dégradation des sols s'accompagne inexorablement d'une baisse de leur fertilité, et plus particulièrement de leur teneur en matière organique compromettant ainsi la durabilité des systèmes de productions agro-sylvo-pastorales.…”

Section: Introductionunclassified

Effets des fumures organo-minérales et des rotations culturales sur la qualité des sols

Ouandaogo¹,

Ouattara²,

Pouya³

et al. 2016

Int. J. Bio. Chem. Sci

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Les sols des régions semi-arides de l'Afrique de l'Ouest sont sujets à une dégradation graduelle de leur fertilité. Ils sont connus être d'une productivité très limitée et les moyens modernes pour augmenter et maintenir cette productivité sont le plus souvent très onéreux pour les petits exploitants. Ainsi, pour trouver de solutions probantes pour une gestion durable de la fertilité des sols, une étude a été conduite à la station de recherche agricole de Saria au Centre Ouest du Burkina Faso sur un dispositif implanté depuis 1960 où des fumures organique et/ou minérale combinées à des systèmes de cultures sont testés. L'objectif de cette étude est d'évaluer les effets de ces fumures combinés aux rotations culturales, sur le statut organique et la qualité des sols. Ce dispositif expérimental est du type Split splot à 6 répétitions, combinant six niveaux de fertilisation et à trois types de rotation. La monoculture de sorgho et la rotation sorgho/niébé ont été retenues dans cette étude. Des échantillons de sol ont été prélevés à 0-20 cm dans les parcelles du dispositif, et dans une jachère naturelle jouxtant le site expérimental et qui a servi de référence. La texture du sol et les teneurs en carbone et azote ont été déterminées. Les résultats obtenus montrent que, plus que le carbone organique total du sol, c'est plutôt sa fraction labile qui se révèle être un indicateur très sensible aux changements précoces qui affectent le statut organique des sols. En effet, l'indice de gestion du carbone qui apparait très corrélé avec la stabilité structurale du sol se positionne comme un outil fiable d'évaluation de la qualité des sols soumis aux pratiques culturales. Par ailleurs, les rotations sorgho-niébé se révèlent être des pratiques culturales les plus appropriées pour assurer une durabilité de la qualité des sols et des productions agricoles.

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“…Nogueira et al ., ; Kaschuk et al ., ; Kocyigit & Demirci, ; Câmara‐Ferreira et al ., ). Soil organic matter is known to play a central role in the ecosystems functioning and crop growth (Powlson et al ., ; Campos et al ., ). In the study reported here, SOC decreased 1·4 times in the arable soil compared with the forest soil.…”

Section: Discussionmentioning

confidence: 98%

Deforestation and Cultivation with Maize (Zea mays L.) has a Profound Effect on the Bacterial Community Structure in Soil

et al. 2014

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In this study, the effect of deforestation and cultivation of maize (Zea mays L.) on the physicochemical characteristics and the bacterial community structure in soil were studied at the national park Área de Protección de Flora y Fauna Nevado de Toluca in Mexico. Soil was sampled from three forested areas in the national park, from three deforested areas grazed by animals and from three areas cultivated with maize. The soil was characterized chemically and biologically, whilst the bacterial community structure was investigated through 454 pyrosequencing of the 16S rRNA gene. The pH in the forest soil decreased from 6·1 to 5·3 in the maize-cultivated soil, whilst the soil organic C content decreased 1·4 times in the arable soil compared with the forest soil. The microbial biomass C decreased 2·9 times in the arable soil compared with the forest soil, but the metabolic quotient qCO 2 (ratio basal respiration to microbial biomass C) nearly doubled. Deforestation and maize cultivation reduced the abundance of Proteobacteria, Actinobacteria and Bacteroidetes, whereas Acidobacteria, Chloroflexi, Gemmatimonadetes and Firmicutes were resistant to these changes. It was found that soil characteristics were affected negatively by deforestation and nearly half of the organic matter was lost, and on these sloped fields, erosion will be high, further decreasing soil fertility. Although the relative abundance of a number of bacterial groups was reduced by deforestation, others were not affected by land-use change.key words: bacterial community structure; metabolic quotient qCO 2 ; microbial biomass C and N; soil organic matter; resistance of the bacterial community to land-use change

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Soil Organic Matters

Cited by 20 publications

References 29 publications

Soil health indicators impacted by long-term cattle manure and inorganic fertilizer application in a corn-soybean rotation of South Dakota

Soil health indicators impacted by long-term cattle manure and inorganic fertilizer application in a corn-soybean rotation of South Dakota

Effets des fumures organo-minérales et des rotations culturales sur la qualité des sols

Deforestation and Cultivation with Maize (Zea mays L.) has a Profound Effect on the Bacterial Community Structure in Soil

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