Conversations With John Kempf – Sweet Az Farm
A review of sap analysis data for Malcolm Leadbetter at SweetAz Farm on Macadamia. This is a crop we have limited data for and that I…
Author: John Kempf
Nutrition management for apple scab
Some apple varieties are quite susceptible to apple scab, while others are resistant. Plant sap analysis indicates the resistant varieties are much better at absorbing…
Unhealthy plants create unhealthy soils
The popular narrative is that healthy soils produce healthy plants. This is correct but incomplete. We need to ask the question, what creates healthy soils?…
Residue digestion and nutrient delivery
When fungal activity looks like this beneath the tree row, how long do you suppose leaf residue will be around to carry over disease to…
Economic rewards of foliar sprays
All treatments received a dry soil broadcast. Left side, no foliar, Center single foliar, after first cutting Right side, two foliars, after first, and after…
Terminal buds are not terminal after all
Supposedly when terminal buds are set on new growth shoots, that is all the new growth that will occur for the remainder of the year.…
Leaf zippering indicates calcium deficiency
I already wrote about this topic here. On a previous post with wine grapes, I created a brand new category.
Visual indicators of manganese deficiency
This grower believes he has exceptional leaf size on his plums. And it is true, he does. He also has visual indicators of manganese deficiency.…
Increasing marketable yield on peaches
In this post, I am not including a photo in the post itself, but only as a featured image. I am presuming this means the…
