scholarly journals Fertility, Microbial Biomass and Edaphic Fauna Under Forestry and Agroforestry Systems in the Eastern Amazon

10.5772/29687 ◽  
2012 ◽  
Author(s):  
Maria de Lourdes Pinheiro Ruivo ◽  
Antonio Pereira ◽  
Keila Chistina ◽  
Cristine Bastos ◽  
Quezia Leandro ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Agroforestry Systems

Influence of residue composition and addition frequencies on carbon mineralization and microbial biomass in the soils of agroforestry systems

2012 ◽  
Vol 32 (22) ◽  
pp. 7239-7246 ◽  
Author(s):  
王意锟 WANG Yikun ◽  
方升佐 FANG Shengzuo ◽  
田野 TIAN Ye ◽  
唐罗忠 TANG Luozhong
Keyword(s):  
Microbial Biomass ◽  
Carbon Mineralization ◽  
Agroforestry Systems ◽  
Residue Composition

Carbon, nitrogen, organic phosphorus, microbial biomass and N mineralization in soils under cacao agroforestry systems in Bahia, Brazil

2012 ◽  
Vol 86 (2) ◽  
pp. 197-212 ◽  
Author(s):  
F. C. Zaia ◽  
A. C. Gama-Rodrigues ◽  
E. F. Gama-Rodrigues ◽  
M. K. S. Moço ◽  
A. G. Fontes ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
N Mineralization ◽  
Organic Phosphorus ◽  
Agroforestry Systems

scholarly journals SOIL QUALITY UNDER AGROFORESTRY SYSTEMS AND TRADITIONAL AGRICULTURE IN THE ATLANTIC FOREST BIOME

2018 ◽  
Vol 31 (4) ◽  
pp. 954-962
Author(s):  
PATRICIA DIAS TAVARES ◽  
CRISTIANE FIGUEIRA DA SILVA ◽  
MARCOS GERVASIO PEREIRA ◽  
VANESSA APARECIDA FREO ◽  
WANDERLEI BIELUCZYK ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Organic Carbon ◽  
Soil Quality ◽  
Aggregate Stability ◽  
Agroforestry Systems ◽  
Forest Area ◽  
Traditional Agriculture ◽  
Native Forest ◽  
Soil Microbial ◽  
Agricultural Matrix

ABSTRACT In the present study, we evaluated the influence of agroforestry systems and traditional agriculture on the physical attributes and biologicals of soil, using as reference a native forest area in Paraty, RJ. Levels of total soil organic carbon, as well as oxidizable fractions and aggregate stability, were analyzed, in addition to the activity and carbon and nitrogen content in the soil microbial biomass, in the 0-5 cm layer, in two distinct seasons (dry and rainy seasons). The agroforestry systems and traditional agriculture maintain high levels of total organic carbon and its storage in more stable fractions. These systems provide the same conditions as those of the forest area for the aggregation of the soil. The microbial biomass was more responsive to variations in management and seasonality. The deployment of agroforestry systems contributes to the formation of a more diversified agricultural matrix, promoting improvements in the soil quality and connection with the remaining adjacent forest.

scholarly journals Soil Microbial Activity and Biomass in Semiarid Agroforestry Systems Integrating Forage Cactus and Tree Legumes

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1558
Author(s):  
Dayanne Camelo ◽  
José Carlos Batista Dubeux ◽  
Mércia Virginia Ferreira dos Santos ◽  
Mario Andrade Lira ◽  
Giselle Gomes Monteiro Fracetto ◽  
...  
Keyword(s):  
Organic Matter ◽  
Microbial Biomass ◽  
Microbial Activity ◽  
Rainy Season ◽  
Cropping Systems ◽  
Agroforestry Systems ◽  
Tree Legume ◽  
Δ13c And Δ15n ◽  
Soil Microbial ◽  
Tree Legumes

Vegetation cover affects soil organic matter and activity of soil microorganisms. We investigated the intercropping effect of forage cactus with tree legumes on soil microbial biomass and organic matter in the semi-arid tropic, state of Pernambuco, Brazil. We assessed the following cropping systems: (i) Gliricidia sepium intercropped with cactus cv. IPA-Sertânia; (ii) Leucaena leucocephala intercropped with cactus cv. IPA-Sertânia; and (iii) Cactus cv. IPA-Sertânia in monoculture. Samples were collected during the dry and rainy seasons in the 0- to 0.10- and 0.10- to 0.20-m soil layers at 0, 1.5, 3.0, and 4.5 m in a perpendicular gradient from tree legume rows. The following responses were determined: δ13C and δ15N, C and N, microbial activity and biomass, and metabolic, microbial, and mineralization quotient. δ13C and δ15N varied with the distance from the trees. In the dry season and beginning of the rainy season, the cropping systems showed similar values for C, N, microbial activity, carbon, and nitrogen in the microbial biomass. The presence of tree legumes at the end of the rainy season favored soil microbiota, which showed a reduced loss of C-CO2, with no indication of metabolic stress and greater microbial biomass and microbial quotient in relation to forage cactus in monoculture.

scholarly journals Soil Fauna Communities and Soil Attributes in the Agroforests of Paraty

2016 ◽  
Vol 23 (2) ◽  
pp. 180-190
Author(s):  
Miguel Seabra Corrêa da Silva ◽  
Maria Elizabeth Fernandes Correia ◽  
Eliane Maria Ribeiro da Silva ◽  
John Edmund Lewis Maddock ◽  
Marcos Gervasio Pereira ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Fauna ◽  
Secondary Forest ◽  
Microbial Biomass Carbon ◽  
Plant Cover ◽  
Agroforestry Systems ◽  
Southeastern Brazil ◽  
Native Forest ◽  
Biomass Carbon ◽  
Ecological Processes

ABSTRACT We conducted the present study in Paraty, southeastern Brazil, in areas under different management regimes and plant cover. The study comprised two different agroforestry systems (AFS-1 and AFS-2), a secondary forest, and a cassava monoculture. We aimed at assessing the effects of land use on the soil fauna and its relationship with soil chemical (pH, Al, Ca, Mg, P, K, carbon, and organic matter) and microbiological attributes (soil microbial biomass carbon - SMB-C, soil respiration – SR, metabolic quotient - qCO2, microbial biomass carbon - C-mic). During winter, AFS-2 showed higher abundance of microphagous, saprophagous, and total individuals than the other areas. AFS-1 and the forest showed an increased abundance of Formicidae and phytophagous groups from winter to summer. The soil fauna and community structure showed that the studied agroforests are under regeneration, becoming more similar to the native forest, where ecological processes are considered efficient.

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