It’s my belief your trees were damaged with glysophate or similar chemical eg 24d , dicamba. Take a look at these almonds https://thealmonddoctor.com/glyphosate-damage-on-almond/
This will be helpful Herbicide injury on garden plants | UMN Extension
Or An Overview of Dicamba and 2,4-D Drift Issues | Herbicide-Drift Risk Management for Specialty Crops or Reducing 2,4-D and Dicamba Drift Risk to Fruits, Vegetables and Landscape Plants | Ohioline
I’m not sure how this damage to your orchard is handled in your part of the world but typically compensation is given by the person who oversprayed your crop. Photos , and plant leaves and other items can be gathered for proof if necessary. This is not the first or last time we have saw this. @thecityman was oversprayed in a similar manner
My very strange pears
@grantmarais welcome to the community we look forward to many more posts