Trees, Shrubs and Conifers: Austrian Pine, Waco, TX suddenly has lots of yellow needles, 1 by cedarstudio

cedarstudio wrote:
This pine was planted in the fall of 2010. We were told it was grown within 100 miles of here, so although not native, it was adapted to the area. We have babied this tree through the intense drought of 2011 and it seemed to be doing well until about one month ago. We began to notice some yellowing of the needles so we fertilized it with 4 stakes of tree and shrub fertilizer. Could that be the cause of even more yellowing and needle drop? It has been green all year and even through the intense heat of the summer so we thought we were in the clear until now.

What do we do now?

Thanks.