Planting or replanting your plot

Technical articles

Viticulture Climate resilience

Vine uprooting

Burgundy paradox: production is declining while vineyard areas are increasing!

Among the factors involved, decline plays a major role and more particularly wood diseases, which lead to a significant annual mortality of vines that must be managed. Uprooting and then replanting a plot is a practice that has become rare in recent years in Burgundy (renewal rate < 1% for 10 years). This trend leads to an aging of the vineyard. At the same time, interplanting (replanting) is increasing but it is not without consequences on production potential.

The production start of an interplant is different from that of a newly planted plot.

It takes 9 years for the interplant to reach its production potential.

Interplanting or replanting: how to make the right choice?

To answer this complex question, BIVB provides professionals with a tool capable of guiding the grower towards the best choice. For this, the calculator takes into account technical data to assess the yield loss due to the presence of interplants. It then allows, based on additional economic data, to determine the best response for the plot concerned: continue interplanting or replant!

Some key elements to optimize your choice

INTERPLANT to limit yield losses

Interplanting is an interesting solution to replace missing vines on a vine plot and maintain a profitable yield level.

• Promote rooting
  • Keep 5 cm of roots: This length facilitates soil colonization. It has been shown that long roots and shoots improve plant survival.
  • Choice of rootstock: Vigorous rootstocks allow better recovery but are more sensitive to diseases of the wood. Consider this choice according to the future of the plot (long or short term).
• Allow greater plant development
  • Care for phytosanitary protection: The developmental delay of interplants requires longer protection to promote reserve accumulation and better recovery the following year.
• Optimize the entry into production of plants

REPLANT to regain production potential

• Know your plot
  • Analyze the reasons for uprooting (viruses, deficiency, etc.)
  • Analyze your soil (soil analyses, cultural profile or soil pit…). This is the ideal time!

• Prepare your soil
  • According to analysis results, implement appropriate amendments and corrective fertilizations.
  • Let your soil rest (minimum 18 months).
• Choose your plant material
  • Anticipate your order with your nursery (18 months).
  • Get advice to adapt your rootstock to your soil, grape variety, clone or selection according to your production goals.
• Carry out your planting
  • Properly store your plants and rehydrate them for 24 h (just before planting).
  • Promote rooting by leaving 5 cm of roots.

The cost of interplanting

Data from the study of technical itineraries costs vine conducted by BIVB.

Studied panel

• 33 companies
• 730 ha

Average cost and working time

Very diverse strategies

• Concentrate resources (€4 / interplant) : Amount observed in a company that interplants only part of the land, with plot rotation to be efficient. A rotation by thirds, over 3 years, seems a good compromise.
• Maintain production potential (€16 / interplant) : Amount observed in a company that controls the cost of other vineyard work. Interplanting is considered a strategic activity to ensure maintenance of production potential: +50% time for interplant care (compared to average).

Interplanting, replanting and...

Other practices, used more occasionally in the vineyard, can allow regeneration of a vine stock. These methods require much more working time and technical skill than interplanting but can give good results.

For example, here are two possible grafting methods:

Cleft grafting of a vine stock.

• Cleft grafting : it consists of inserting two scions on a stump topped at the rootstock level. This practice is done at budburst or before leaf fall. It is the simplest and fastest regrafting technique to implement among these alternatives. It requires few post-grafting interventions and the necessary equipment is easily found at low cost. Moreover, it allows half a harvest as early as the year following grafting.

T-bud grafting of a vine stock.

• The T-bud : it consists of inserting a scion at a bud under the bark of the rootstock (at the cambium level). This technique must be performed at a precise period close to flowering so that the bark separation is easy. It requires more precision and more regular maintenance than others. Nevertheless, this grafting has a very satisfactory success rate. In addition, it has the advantage of preserving the stump head in case of failure.

Sources

• This page was created from the PDF document "Interplanting or replanting your plot? What you need to know" published by the BIVB.

Appendices

1. Redirect Modèle:Pages liées