What's wrong with this peach tree?

[mistymac]

This is an existing tree. I'm not exactly sure how old it is I'm thinking at least 5. I'm pretty sure it's suffering some kind of deficiency as well as potentialy bores (see last pic).

I have some nematodes coming but does anybody have any idea of what kind a deficiency(cies) this may be?

All of these pictures are leaves from the same tree.

 

[eggbert420]

Nitrogen deficiency.

 

[jofanx]

Are they curling up and shriveling? There's a fungus/virus that does that to peach leaves if you don't spray it called leaf curl (I had it last year due to a very rainy early spring). If it's not that, and you think it's an N deficiency, you can either add a fertilizer or if you want to go au natural, plant either legumes or clover around it--they're nitrogen fixers so they take nitrogen from the air and through the help of bacteria on their roots, affixes it into the soil.