How to fertilize pecan plants?

Pecan    None Given

Hi there!
I'm from Center Italy and I have two 2 years old pecan grafted plants.
I would like to fertilize them with chemical fertilizers.
I can use a 15-9-15 slow release fertilizer.
By reading online I found different opinions about the quantity to use.
I have no idea about pecan needs so I thought to use the same quantity used for walnut.
So according to the label, I should use about 300g (0.66 pound) per plant of 1 year and 300g (0.66 pound) + 100g (0.22 pound) for every consecutive year.
So the next spring I should use 400g or 500g (0.88-1.1 pound).
I should give it in three times, in February, in May and in September-October.
By reading some pdf of USA University, I found that it is possible to use a 10-10-10 slow release fertilizer:
310g (0.68 pound) in February/March and 310g (0.68 pound) in June
Every consecutive year add other 0.68+0.68 pound.

According to you, by considering that I'm going to use a 15-9-15 fertilizer, how many grams should I add?

p.s.: I'm going to spray also zinc sulphate.
I calculate to give about 5-10g/l of zinc sulphate @ 20%.

Posted by: Mirko (1 point) Mirko
Posted: November 22, 2016


According to Clemson University the recommended rate of fertilizer for young pecan tree is "1 pound of 10-10-10 fertilizer applied in a 25-square-foot area around the tree. Fertilizer should be applied immediately after planting and again in June or July. And the following February, apply 4 pounds of 10-10-10 fertilizer for each inch of trunk diameter (measured 1 foot above soil surface)."

The recommended fertilizer is 1 pound of 10-10-10 fertilizer per 25 Sq. feet
(40 pounds of 10-10-10 fertilizer per 1000 Sq. feet)

So if you use 15-9-15, how much fertilizer you need for 25 Sq. feet area around the tree?

Based on calculations you need 26. 7 pounds of 15-9-15 per 1000 Sq. feet
0.668 pound (303 g) of 15-9-15 per 25 Sq. feet area

Similarly for February recommended rate is 4 pounds of 10-10-10 per 25 Sq. feet
(120 pounds of 10-10-10 per 1000 Sq. feet)

So if you use 15-9-15,

You need 80 pounds of 15-9-15 per 1000 Sq. feet
2 pounds (907 g) of 15-9-15 per 25 Sq. foot area around the tree.

Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: November 25, 2016

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