Brazil - Tocantins

Site Description

Locations

Tocantins
Site Extent   Centroid: ---, ---
Top left: -9.044, -48.324 Bottom Right: -9.270, -48.084

Location: 
Municipality of Pedro Afonso and surroundings (Center-North Region of Brazil).
 

 

 

Climatic Zone:

Megathermal wet weather (Thormthwaite-Mather (1955))

Average annual rainfall from 1700 to 1800 mm, with moderate winter water deficit

Potential evapotranspiration showing an annual average variation between 1,400 and 1.700 mm and an average of 28% in summer (three consecutive months with higher temperature)


Landscape topography:

Dominance of the topographic modeled type A: Areas with mild relief, slightly undulating with soft slopes (declivity equal to or less than 5%) in which, in most soils, the runoff is slow or medium.

Subdominance of the topographic modeled type B: Areas with sloping surfaces (declivity greater than 5% and equal or less than 10%), usually with undulating relief, in which the runoff, for most soils is medium or fast.


Soils:

Dominance of Yellowish-Red Oxisols and Entisols.

Yellowish-Red Oxisols - Medium to clay texture. Range from strongly drained to well drained depending on their texture and porosity, but can have adequate moisture.

Entisols (Quartzipsamments) - Sandy texture. Range from of excessively drained to strongly drained depending on their topographic position and the level of the water table, they may have moisture limitations in dry periods.


Irrigation Infrastructures

Center-pivot irrigation systems.


Crop calendar:

Double cropping system:

Summer soybean crop - from November to February (harvest in January/February)
Cereal crop - from March to May (harvest in April/June)

Sugarcane crop: annual cycle (12 months) or longer (18 months)


Field size:

Mostly large (fazendas with fields of ~ 100 ha), and some smallholders


Agricultural methods:

Seeding, fertilization, pesticide application and harvest are carried out with mechanical equipment.

Concerning soil management, most of the area has adopted no-tillage/zero tillage systems. Very few fields undergo conventional management with plowing, harrowing and occasional liming. 

       
Image 1. Crop Cover Millet Residues

      
Image 2. Center-pivot irrigation over sugar cane plantation

   
Image 3. Rubber Tree (Hevea brasiliensis) plantation

 

 

      
 Image 4. Soybean growing over corn residue 

 

  

Image 5. Soybean processing and refining plant 

 

 
 Image 6. Sugarcane Mill

 

Image 7. Field undergoing conventional tillage and liming

 

Image 8. Cattle grazing in open grassland field   

Image 9. Confined meat cattle

©2015 Joint Experiment for Crop Assessment and Monitoring
© HER MAJESTY THE QUEEN IN RIGHT OF CANADA SA MAJESTE LA REINE DU CHEF DU CANADA (2015)