WeedsWeed control

Mechanical weeding against weed control

The effectiveness, measured

88 /100

Time horizon: Immediate

Why it works

It is the direct means of controlling under-row weeds where herbicide is banned, keeping competition in check.

What to measure for this pairing

Weed cover (%)Weeding passes

Why this problem matters

Under organic rules synthetic herbicides are prohibited, so under-row weed control becomes one of the biggest operating costs. Management is mechanical, physical and agronomic.

Mechanical weeding in the row, a competitive cover in the inter-row and mulch are the main levers. The challenge is to control competition for water and nutrients without over-tilling or damaging the vines.

Problem indicators

Mechanical weeding passesWeed cover in the row (%)Control cost per hectare

Certification & rules: The absence of herbicide is an absolute requirement of organic certification.

How to apply the means

  1. 1Choose the intercep tool suited to the soil and vineyard.
  2. 2Intervene at the right soil-moisture window.
  3. 3Combine with mulch and cover to cut passes.
  4. 4Log passes and herbicide-free area treated.

Frequently asked

Doesn’t mechanical weeding damage the vines?

Modern intercep tools with a feeler retract from the trunk automatically. The right setup and speed minimise any risk.

How do I cut the number of passes?

By combining with row mulch and a competitive inter-row cover, which suppress weeds and reduce the need to weed.

Same means, other problems

Same problem, other meansWeeds

Related reading →Copper in organic viticulture: the limits, the maths and how to stay under them

How GrapeFlow helps

The proof organic certification demands — logged by plot and date.

Electronic field notebook

All operations — weeding, green manure, biocontrol — logged by plot and date, ready for organic certification.

Fertilisation plan & analyses

Per-plot needs, organic amendments applied and soil and leaf analyses in one place.