Some examples are shown in the following gallery with crops arranged from sensitive to very tolerant.. 1  Graphs of crop yield and soil salinity in farmers' fields ordered by increasing salt tolerance. 2  Fig. 3  Fig. 4  Fig. 5  Fig. 6  Fig. 7  Fig.
He should be at least 18 months old and have been doing public access training (performing his already mastered skills and tasks) in public for at least six months reliably before being transitioned from service dog in training to full service dog.
For instance if you have a 12-16+ months old Border Collie dog and you want to train him basic things like home rules, obedience and other behavioral problems then it is always better to start training your dog at a young age so that he will remember that forever. So, the earlier you start the better it is.