16 March 2018
We are well into harvest now and the end is in sight. The vines have done it tough this season with fluctuating conditions. They will be looking to replenish their reserves in preparation for next season.
Applying post harvest fertiliser is arguably one of the most important and valuable times for vine nutrition.
After harvest, viticulturists have an opportunity to address any issues in the vines nutrient status before next season.
Once the fruit is harvested it’s like ‘flicking a switch’ for the vine which changes from fruit production, to replenishing nutrients and carbohydrates in preparation for next seasons crop. A new flush of root growth occurs to aid the uptake of water and nutrients.
It is not only the vines that need replenishing but the soil as well. When we apply synthetic nitrogen during to the soil, it burns up carbon stocks in the soil, carbon is a key food source of soil biology.
Overtime this low carbon environment leads to reduced biological activity and reduced nutrient cycling, water efficiency and disease resistance in vines.
Post harvest fertiliser applications are:
A combination of approaches are available to replace essential nutrients and carbon to your plants and soil. These include Foliar spraying, Fertigation and Spreading of granular fertiliser and soil conditioners.
The below chart is a guide. We are here to help for further information on tailoring a program specific to your situation.
Rodney Capon, Area Manager
Download Post Harvest Vineyard Flyer for details