Huge amounts of both macronutrients and trace elements are removed from the system when tree crops are harvested.
These nutrients need to be replaced to make sure crops have the stores they need to maximise production in the next season.
Tree crops normally have a root flush after harvest—it's the plant's natural way of feeding itself before dormancy.
When dormancy breaks in spring, demand for nutrients to support new root and shoot growth is extremely high. This demand can't be met by root uptake alone and plants need to rely on their nutrient reserves.
Studies in grapevines have shown that up to half of the nitrogen and phosphorus in the new season's canopy comes from stored reserves. It is important to get those vital nutrients into trees and vines before they shut down for winter.
Post harvest strategy
A good post harvest strategy needs to supply nutrients to flower buds and the root zone as well as replenish the plant's stores.
It lays the foundation for the next season by accelerating the movement of carbohydrates and nutrient to roots and woody storage tissues.
This means stronger and healthier buds that are ready for budburst and flowering in spring.
Nitrogen, phosphorus, potassium and calcium helps rebuild nutrient banks, condition the soil and displace undesirable salts.
Trace elements like zinc are used in protein synthesis, carbohydrate metabolism and root development; manganese, magnesium and boron help promote flowering, pollination and shoot development.
Stoller program
Stoller Australia's post harvest hibernation options are designed to rebuild plant nutrient banks and accelerate the movement of carbohydrates and other reserves back to roots and woody tissues.
See this article in Tree Fruit March 2015
