Authorised organic amendments
Compost and permitted amendments that feed the soil.
When green manure is not enough, authorised organic amendments round out organic nutrition: compost, composted manures, meals and other amendments from the permitted-input list.
They supply slow-release nutrients and organic matter that feeds the soil. The essential thing is to use only authorised inputs, match the rate to analyses and log every application for the traceability certification requires.
Effort
Low to medium — periodic application.
Cost
Variable — low with own compost, medium if bought.
Time to result
1–3 seasons depending on rate and soil.
What it works against
Effectiveness by problem — click through for detail and metrics.
Nutrition & fertility
They supply slow-release nutrients and organic matter, covering the needs green manure does not meet.
Time horizon: 1–3 seasons
What to measure for this pairing
Weed control
Applied as an organic mulch in the row, the amendment suppresses weeds while it feeds the soil.
Time horizon: 1 season
What to measure for this pairing
How it works
The organic matter in amendments mineralises gradually through soil biology, releasing nutrients at the pace of the vine’s needs.
How to apply
- 1Analyse soil/leaf to size the need.
- 2Select only organically-authorised amendments.
- 3Apply the matched rate, preferring modest, regular applications.
- 4Log product, rate and plot for certification.
What to measure
Frequently asked
Can any manure be used in organic?
No. There are restrictions on origin (e.g. from intensive livestock) and you must confirm the authorised-input list and the certifier’s rules.
Better one big dose or regular applications?
Modest, regular applications give a better soil response and lower risk of excess that raises vigour and disease susceptibility.
Related reading
Related means
How GrapeFlow helps
Apply and document this means by plot, with an audit-ready history for certification.
Soil & leaf analyses
Soil and leaf results by plot and year, in the same place you log applications — so you can see what the amendment changed.
Phytosanitary register with authorised inputs
In Portugal, every treatment is logged with product, rate and active substance, flagging what is allowed under organic rules — an audit-ready history.
Electronic field notebook (Portugal)
In Portugal, all operations — weeding, green manure, biocontrol — logged by plot and date, ready for organic certification.
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