Date: July – December 2018
Goal: To determine the feasibility of using the organic fungicide Jaque Mate in commercial control programs for black Sigatoka.
Location: Finca Coobana, Changuinola, Bocas del Toro, Panama.
Crop: Banana
Methodology
Variables Evaluated
In total, 20 evaluations of the severity of the disease were carried out. The scale used was the Stover scale modified by Gauhl (1989), and the following variables were measured:
Infection index (IND): it is a percentage expression of the severity of the disease. See Figure 1 *
T = total of leaves evaluated (Romero, 1994).
The values of this index can range between zero and 100 %, the higher the values, the greater the severity.
Treatment
The treatment consisted of the use of Jaque Mate at a dose of 0.25 lt / ha, by substituting a cycle of Mancozeb (Vondozeb 62) prior to the application of a systemic one, in the application program. In the preparation of the checkmate mixture, this was prepared using 2% emulsifier on the total oil, three liters of agricultural oil and the product was added at the end of the mixture.
Results
The behavior of the infection index is shown with similar results between Jaque Mate and Mancozeb , but at the end of the study it is lower in the area of Checkmate.
Conclusions and recommendations
Jaque Mate is an alternative organic solution against synthetic chemistry. It has the ability to control Black Sigatoka in the absence of synthetic solutions.
At the test level, we did not detect important differences between treatments, except that the Jaque Mate area equaled the values that at the beginning were slightly higher infection in the area assigned to it.
Currently, Jaque Mate is part of the banana program at Finca Coobana, in Panama.
- Mix Jaque Mate by adding it to the end of the components.
- It is recommended to use Jaque Mate in a cycle prior to each application of systemic product.
Oscar Arias – Pablo Alvarez, Agricultural Engineers ExcelAg Corp.
Email: oarias@excelag.com
