Soil Fertility, Mineral Nitrogen, and Microbial Biomass in Upland Soils of the Central Amazon under Different Plant Covers

  title={Soil Fertility, Mineral Nitrogen, and Microbial Biomass in Upland Soils of the Central Amazon under Different Plant Covers},
  author={Ad{\^o}nis Moreira and Nand Kumar Fageria and Axel Garcia y Garcia},
  journal={Communications in Soil Science and Plant Analysis},
  pages={694 - 705}
Amazon is the largest state in Brazil and majority of the state is covered by the largest tropical rainforest of the world. Most soils of the Amazon region soils are acidic and infertile. When the Amazon forest land is cleared for agricultural use by burning the vegetation, the efficient nutrient recycling mechanisms are disrupted. However, nutrient contents in the deforested burn land increased temporarily. The objective of this study was to evaluate the soil fertility, mineral nitrogen (N… Expand
Phosphorus Dynamics in the Conversion of a Secondary Forest Into a Rubber Tree Plantation in the Amazon Rainforest
Abstract During the past several decades, extensive areas of the humid tropical Amazon have been cleared for the introduction of pasture or subsistence farming and later abandoned after a few yearsExpand
Do soil fertilization and forest canopy foliage affect the growth and photosynthesis of Amazonian saplings
Most Amazonian soils are highly weathered and poor in nutrients. Therefore, photosynthesis and plant growth should positively respond to the addition of mineral nutrients. Surprisingly, no study hasExpand
Soil Physical Quality and Relationship to Changes in Termite Community in Northwestern Colombian Amazon
Conversion from Amazon forest to low-management pasture or agriculture causes not only degradation of aboveground vegetation but also negative changes in soil properties and ecosystem services. ThisExpand
Variations in soil biological properties in poplar plantations along coastal reclamation stages
Abstract Mudflat reclamation has changed the ecological environment and soil properties in coastal areas. However, the variations in soil biological properties in areas with a history of coastalExpand
Long-term application of manure reduced nutrient leaching under heavy N deposition
Little is known about the importance of long-term fertilization in crop production and nutrient leaching under heavy wet nitrogen ( N ) deposition from the atmosphere (WNDA) in tropical andExpand
Effects of pre-planting site management on soil organic matter and microbial community functional diversity in subtropical Australia
Abstract Weed control is a key factor affecting early plant growth and establishment in revegetation projects in South-east Queensland of sub-tropical Australia. Costs associated with weed controlExpand
Nutrient availability and organic matter content under different soil use and management
The use of the system, handling and time adoption of these can effectively alter the quantity of organic matter (OM) and change the cycling of nutrients in the soil. This paper aimed at evaluatingExpand
Changes in microbiological attributes of a red latosol under different cropping systems
The objective of this study was to evaluate changes in microbiological attributes of soils under different growing systems. Three cropping systems were evaluated (1) no-tillage system (NTS); (2)Expand
Forest conversion to plantations: A meta-analysis of consequences for soil and microbial properties and functions.
  • Ying Wang, Liang Chen, +7 authors Y. Kuzyakov
  • Medicine
  • Global change biology
  • 2021
A meta-analysis underlines the adverse effects of natural forests conversion to plantations on soil microbial communities and functioning, and suggests that the preservation of soil functions should be a consideration in forest management practices. Expand
Dynamics of labile fractions of soil organic matter under 36-years of application of mineral and organic fertilizer in Chernozem (Mollisol) in Ukraine were studied. “Light” fractions of SOM betweenExpand


Subsoil accumulation of mineral nitrogen under polyculture and monoculture plantations, fallow and primary forest in a ferralitic Amazonian upland soil
Central Amazonia is characterized by high and intensive rainfall and permeable soils. When rainforests are cleared for agricultural use, the efficient nutrient recycling mechanisms of the forests areExpand
Potential of Rubber Plantations for Environmental Conservation in Amazon Region
The Amazon is the largest tropical rainforest in the world. Its conservation is important to avoid world climate changes, especially rising atmospheric temperature, release of greenhouse gases andExpand
Ratio of microbial biomass carbon to soil organic carbon as a sensitive indicator of changes in soil organic matter
The sensitivity of soil organic carbon (Corg) and microbial carbon (Cmic) measurements, and the Cm~,/Co,, ratio, to reflect climatic, vegetation, cropping and management history was investigatedExpand
Dynamic of organic matter and microbial biomass in a soil under different management systems in the Western Amazon
The objective of this work was to evaluate the alterations of the microbial biomass activity as an indicator of C and N dynamics in a soil submitted to the succession of plant cover and management inExpand
Changes in the soil after clearing tropical forest
SummaryAbout one-and-a-half acres of tropical forest, of known mass and chemical composition, was cleared and burned. Soil changes during clearing and two years' cropping were studied.FollowingExpand
Soil properties under Amazon forest and changes due to pasture installation in Rondônia, Brazil
We examined the consequences of deforestation and pasture establishment for soil chemical and physical properties and for soil organic matter content, in Rondonia, in the southwestern part of theExpand
Soil Chemical Attributes of Amazonas State, Brazil
Amazonas State is the largest state in Brazil and mainly covered by tropical forest. Because of the importance of the tropical forest in maintaining soil health and a clean environment, conservationExpand
Ratios of microbial biomass carbon to total organic carbon in arable soils
A comparative regression analysis of permanent monoculture plots with continuous crop rotation plots showed both to be highly significantly different at the P = 0.001 level: the regression line of continuous crop rotations shows a steeper slope, suggesting that a higher concentration of microbial carbon is characteristic of the crop rotation. Expand
Phosphorus in the soil microbial biomass
Phosphorus in the soil microbial biomass (biomass P) and soil biomass carbon (biomass C) were linearly related in 15 soils (8 grassland, 6 arable, 1 deciduous woodland), with a mean P concentrationExpand
Soil microbial biomass in Amazonian soils: Evaluation of methods and estimates of pool sizes
The suitability of the fumigation-incubation (FI), fumigation-extraction (FE) (with specific k-factor determined by 14C-labelling) and substrate induced respiration (SIR) methods to obtain measuresExpand