Tuesday, March 20, 2018
The swelling of pecan buds is a good indication of when pecan roots are starting to grow. Actively growing roots aggressively mine the soil for nutrients so when fertilizers are applied at this time of year you can be certain your trees will get maximum benefit from applied fertilizer.
This fertilizer application follows the one we made last October when we applied 100 lbs. per acre of urea (46 lbs. N/acre).
Wednesday, March 14, 2018
The way the tree split apart upon falling allowed me to photograph the internal structure of the wood. I've labeled the key portions of the tree trunk in the photo above. Starting at the far left is a very normal looking layer of bark. Inside the bark are multiple layers of white sapwood. The heartwood of this pecan tree is reddish brown. As I looked to the center of the tree I came across a portion of the heartwood that was riddled with the white hyphae of a wood-rotting fungus. Fungal decay of the heartwood caused it to become soft and lighter in color. The hollow core of the tree represents the portion of the wood that has been completely broken down by fungal activity.
Wednesday, February 28, 2018
1. 2012, 2013, and 2014 tree thinning
2. 2015 tree thinning
3. 2016 tree thinning
4. 2017 tree thinning
When this orchard was established from stratified seed in 1996, we set trees 30 feet apart in a square pattern. In 2000, we grafted all 144 trees to Kanza. Now that we have completed our thinning plan, we have 72 trees remaining spaced 42.4 feet apart. The trees are still arranged in a square pattern but the squares are now tilted 45 degrees from the original north-south orientation.
It won't be too many more years until this orchard will need another thinning plan as the remaining trees continue to grow at the rate of 1/2 inch in trunk diameter per year. The next thinning plan will remove every other north-south row to carve out an orchard with trees 60 feet apart.
Monday, February 26, 2018
stalked buds (photo at left). All of these shoots would develop into narrow-angled branched with deep bark inclusions. So to prevent future problems with limb breakage, I pruned off each small shoot and any remaining stalked buds.
directive pruning to help maintain good structure. Side shoots will emerge this coming season and my new Kanza graft will start looking like a pecan tree.