Planted tree year ago, did great and started out good this year. Started to notice that the leaves would turn brown from the tips and die. After a week of this I pull back pine straw and found a hole down to the roots, moles maybe, not sure. I filled hole good, add mulch and packed well. Tree is still living and sprouting new growth, but each new growth l, leaves continuesl to die starting with the tip
I suspect root damage from golphers or voles, not moles. Or root rot from excess lawn irrigation.
Water deficit and severe nutrient deficiencies are also possible due to the location in turf.
Trees in turf are problematic. Water management is difficult. The turf takes the bulk of the water and nutrients and the trees suffer.