Hi Michael, you asked me by private message if I had found any new information.
And the answer is yes " .
I have a study from the Polytechnic University of Valencia (It is one of the good universities for agricultural engineering in Spain), which brings us new information about it.
I do not give you the complete document ( it’s like a bible of big ) , and I focus on what is really important, since in terms of the chemical fight against this disease, in the European Union only cupric compounds and sulfur are authorized (the European Union is increasingly restrictive with the chemical), and in the field of phytofortifiers, treatment with glucohumates is still in the development phase.
So we will focus on the advances with the biological fight, where there are important advances.
This is the cropped document (the important thing).
LÓPEZ - Especies de Xanthomonas causantes de enfermedades en frutales de hueso y almendro diagnó…(1)-80-82.pdf (301.8 KB)
This is the text translated into English.
The fact that the use of chemical products is increasingly limited in EU countries has led to an increase in the study of potential biocontrol agents. Several bacterial strains have been described with an antagonistic effect on X. arboricola pv. pruni. In tests carried out in peach and nectarine plantations, it was observed that a strain of Pseudomonas fluorescens had an enormous inhibitory potential on X. arboricola pv. pruni leading to a reduction in the incidence of the disease (Biondi et al., 2009). Similar results were obtained in tests carried out with a strain of P. aeruginosa (Silva Vasconcellos et al., 2014) and with this strain, an effect on the exopolysaccharide production of the pathogen as well as changes in its cell morphology was observed. The antagonistic capacity of two non-pathogenic strains of X. campestris (AZ98101 and AZ98106) has also been studied in field trials on various peach cultivars, observing a significant reduction in the incidence of the disease (Kawaguchi et al., 2014). The efficiency of several strains of
Lactobacilus plantarum for the biological control of this disease (Roselló et al., 2014).
The use of phages as biocontrol agents of X. arboricola pv. pruni has also been described. Zaccardelli et al. (1994) verified that certain phages obtained in infected peach fields gave good results for the control of the disease in peach trees. However, its use on a large scale can present a series of drawbacks, such as its poor survival, its inhibition by chemicals commonly used in cultivation and the possibility of generating resistance by the pathogen (Randhawa and Civerolo, 1986; Zaccardelli et al., 1992).
I haven’t done much research on the availability of the recommended strains (Pseudomonas Fluorescens, Pseudomonas Aeruginosa, Bacteriophages, etc …).
Just by looking at the store where I usually shop, Pseudomonas Fluorescens is available.
Michael, now you know a little more about how to fight this disease