Brazil is the largest producer and second largest consumer of coffee after the United States. Within the coffee market, specialty coffees are gaining prominence. According to the Brazilian Specialty Coffee Association (BSCA), specialty coffee represents 12% of the international coffee market. To qualify as specialty coffee, coffee should score 80 points or more, when evaluated on several attributes defined by the Specialty Coffee Association of America (SCAA), such as physical characteristics, origin, variety, color and size, production systems and working conditions of labor.

The coffee tree is a plant that increases its demand for nutrients as it develops. Thus, fertilizer supply must keep pace. TK47 provides nutrients synchronously with the needs of the plant by avoiding losses and generating a residual effect in the soil.

The benefits that TK47 and Super Greensand offer for the coffee culture are:
  • Increases crops resistance against pests and diseases
  • Optimizes management: allows potassium to be applied in pre-planting and eliminates the fertilizer re-application
  • Has no salt effect nor chlorine content
  • Increases the availability of phosphorus in the soil
  • In case of drought and loss of crop, the potassium remains in the soil for the next crop
  • Improves the cell structure of the plant
  • Benefits the process of photosynthesis
  • Reduces plant transpiration rate thus reducing water loss
  • Reduces the impact of drought, heat, cold, soil salinity and heavy metal toxicity
  • Contains the elements sulfur, phosphorus, manganese, zinc, copper and cobalt in small amounts

 

In addition to all the benefits mentioned above, TK47 offers even more advantages for coffee cultivation:

  • Improves the quality of regular and specialty coffee
  • Corrects soils pH without releasing CO2
  • Releases potassium in a controlled manner according to the needs of the plant

Results of TK47 on Coffee

Tests conducted by EPAMIG showed that a dose of K2O from TK47, equivalent to 36% of the K2O from potassium chloride ("KCl"), was sufficient for the coffee tree to achieve the same level of productivity as the tree fertilized with KCl, demonstrating TK47’s efficiency.

Results from the chemical analyzes of the soil showed that, in addition to increasing potassium (K) and calcium (Ca), TK47 corrected the soil’s acidity and considerably increased the availability of phosphorus in the soil.

            

Coffee grown with TK47 was evaluated by experts from Cooxupé - Regional Cooperative of Coffee Growers in Guaxupé, the largest coffee cooperative in Brazil. According to the guidelines of the Specialty Coffee Association of America ("SCAA"), under pre-established quality criteria for physical and sensory attributes, coffee grown with TK47 received an average grade of 83 out of 100 points, a measurement that qualifies the coffee as specialty coffee. The grade for the same harvested coffee but grown using KCl received an average of 73 points. Coffee must receive a grade of 80 or above to be regarded as specialty coffee.

Results of Super Greensand on Coffee

An experiment was conducted by EPAMIG to assess the efficiency of Super Greensand on coffee yields. The control group received zero potassium, whereas the treatment group received potassium from Super Greensand. The results showed that Super Greensand increased the concentration of macronutrients P, K, Ca, S and of micronutrients Zn, Cu, Fe, Mn, B. 

Increased concentration

of macronutrients (%)

P total

83,83

P disponível

12,37

K

57,48

S

9,28

Ca

2,99

Increased concentration

of micronutrients (%)

Zn

26,27

Cu

24,27

Mn

20,25

B

20,25

Fe

8,83

 

Foliar nutrient levels were also higher in the area treated with Super Greensand: N, K, S, Cu, B, Fe, Mn and Zn.

 

Increased concentration

of nutrients in the leaves (%)

Mn

43.99

Cu

41.91

Zn

15.10

N

5.67

K

4.27

S

3.03

Fe

2.64

B

1.83

 

  Super Greensand increased coffee yields by more than 30%.