Mango Orchard Agroecosystems

Local identifier
SemiaridC
Years operational
2008— (Establishment period end: 2009)
Objective
These experiment compared different designs of multifunctional agroecosystems in terms of organic carbon inputs from perennial crops, cover crop and intercrop PMs and tillage intensities (CT, NT).
Description
The treatments consist of two soil tillage systems [no-tillage (NT) and conventional tillage (CT)], combined with three mixtures of cover crops [75% leguminous species + 25% grass and oil-seed species (PM1), 25% leguminous species + 75% grass and oil-seed species (PM2) and spontaneous vegetation (SV)].
Farm operation data?
Sample archive?
Samples available?
 
Data Access Statement
Available to any researcher on request
Data Access Notes
Institutional Data Policy
Data license
Don't know
Data policy
Yes (not online)
Organization
Embrapa Semi-Arid
research organisation
People
Dr Vanderlise Giongo
principal investigator
Embrapa Semi-Arid
Research and Development
Dr Alessandra Monteiro Salviano
principal investigator
Embrapa Semi-Arid
Research and Development
Dr Davi Jose Silva
principal investigator
Embrapa Semi-Arid
Research and Development

Site: Mango Orchard Agroecosystems

Type
research station field
Local code
SemiaridC-Mango
Location
Petrolina
Pernambuco
Brazil
Geographic location
-9.15167, -40.30556
© OpenStreetMap contributors
Elevation
410 Metres
Slope
(flat facing)
Visits permitted?
Yes
Visiting arrangements
booking by email
History
The area, originally under native tropical dry shrublands (hyperxerophilic Caatinga vegetation), was converted into agricultural fields in 1972, and cultivated for 16 years with corn (Zea mays L.), common bean (Phaseolus vulgaris L.) and watermelon (Citrullus lanatus L.), under conventional tillage (CT) system. In 1988, this was followed by date palm (Phoenix dactylifera L.) plantation for 20 years.
Management
The mango long term experiment consists of two soil tillage systems [no-tillage (NT) and conventional tillage (CT)], combined with three mixtures of cover crops [75% leguminous species + 25% grass and oilseed species (PM1), 25% leguminous species + 75% grass and oilseed species (PM2) and spontaneous vegetation (SV)].
Soil type
acrisol
Soil description
classified as Haplic Acrisol (WRB, 2014)
Soil properties
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
clay content0 – 20 Centimetres6.2 (5 – 10) Percent2008
sand content0 – 20 Centimetres87 (80 – 90) Percent2008
silt content0 – 20 Centimetres6.8 ( – 6) Percent2005
soil pH0 – 20 Centimetres6.6 2008
soil organic carbon0 – 20 Centimetres0.6 Percent2008
soil density0 – 20 Centimetres1.5 gram per cubic centimetre
Climatic type
warm semi-arid climate
Climate description
The climate of the region is BSwh’ (semiarid)
Climate properties
VariableTime periodValue (range)Units
precipitation 1978 – 2018 500 millimeter
air temperature 1978 – 2018 (18.7 – 33.6) degree Celsius

Design period: Main period (2009—)

Design Type
Split-plot
Description
The experimental design is split-plot randomized blocks, in four replicates, with soil tillage systems in the plot and mixtures of cover crops in the subplots. In the mango orchard experiment, each subplot is composed of three rows, with three mango trees, totaling 27 trees per plot, at 8 x 5 m spacing, with a total area of 360 m2 and useful area (where mixtures of cover crops were sown) of 270 m2 (18 x 15 m). The mixtures of cover crops are grown in 6-m-long strips in the interrow, leaving a free border of 1 m on each side of the mango tree rows.
Design description
no-tillage (NT) and conventional tillage (CT), combined with three mixtures of cover crops [75% leguminous species + 25% grass and oilseed species (PM1), 25% leguminous species + 75% grass and oilseed species (PM2) and spontaneous vegetation (SV)
Number of blocks
4
Number of plots
2
Number of subplots
3
Number of harvests per year
1
Crops
CropYears grown
Mangifera indica 2009—
sunflower 2009—
castor oil plant 2009—
sesame 2009—
maize 2009—
millets 2009—
sorghum 2009—
rattlebox 2009—
rattlepot 2009—
jack bean 2009—
calopo 2009—
black velvet bean 2009—
pigeon peas 2009—
lab-lab bean 2009—
grey-seed velvet bean 2009—
Factors
tillage process
Plot application: Whole plot
conventional tillage
Application frequency: 1
residue is incorporated: disck plow 0-20cm depth
no-till
crop residue management exposure
cover crops mixtures, 3 levels
Plot application: Sub plot
PM1
2009—
Applied to crop: All crops
Application frequency: 1
Application method: seed dressing
75 % leguminous species + 25 % grass and oilseed species
PM2
2009—
Applied to crop: All crops
Application frequency: 1
Application method: seed dressing
25 % leguminous species + 75 % grass and oilseed species.
Spontaneous vegetation
2009—
Measurements
VariableMaterialUnitsFrequencyScaleComment
plant biomassAll cropst/haannualsub-plotCover crops
soil organic carbonSoil%annualsub-plotrow and interrrow

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