Hello Andy,

I researched Pecan Trees in Neil Sperry's Complete Guide to Texas Gardening. It had some really great information as to what might be going on with your low fruit production. First to consider, are there other pecans near by to cross pollinate? It's good to have multiple varieties in the neighborhood. Also the type of pecan tree is essential. There are different recommendations for East vs. west Texas based on the nutrients available in the soil. Then there are varieties that are not recommended for planting at all. Do you know what variety your pecan is? This will help tremendously in figuring out the resolution.

Yes a zinc application to the leaves helps, but are you doing any other fertilization? Research has shown that a high-nitrogen fertilization helps." Apply 1 pound of ammonium nitrate (33-0-0) or 1.5 pounds of ammonium sulfate (21-0-0) per inch of trunk diameter to the soil around the tree in late winter, concentrating your feeding around the drip line (under the outer canopy of leaves0. Water thoroughly after feeding. repeat the feeding in May," unless there is lawn underneath that you are already fertilizing, then omit the second fertilization.

We recommend Arborlogical Services for tree care. I am not familiar with their pricing for a zinc foliar feed. Please contact them directly. They can also assess  the need for cabling. Your pecan has been pruned very high, which does weakens its strength. I would recommend allowing lower branches to grow in.

Pecans also demands large quantities of water in the summer, up to 50 gallons per day, especially when it's hot. "Be especially mindful of watering as nuts are expanding (early summer) and filling (late summer)."

I hope this helps. Thanks for reaching out to us.

megan benanti