Page 54 of A Practical English Grammar reads
We often use and... instead of to after try / be sure. This is informal. I'll try and phone you tomorrow morning.
However, in page 299, it reads
To talk about making an experiment - doing something to see what will happen - we use try + -ing.
Aren't both statements at odds?
Try and cannot come from try to in I'll try and phone you tomorrow morning since, as the picture from the book that's what you mean shows, try followed by infinitive to implies an effort to do something (at least in the present tense used in those examples), unlike try + -ing,