Hand or Machine Harvest?
The Winemaker’s Decisions and the Future of the Harvest
The harvest is one of the most symbolic and demanding moments of the winegrowing year. Far more than picking grapes, it is a strategic decision that involves climate, terroir, soil type, logistics, labour, wine style and sustainability. Soils, in particular, influence ripening, drainage and the physical effort required for the picking, making them an important factor in the choice between a hand or machine harvest.
In Portugal, between tradition and innovation, many producers face the dilemma of keeping the hand-harvest or adopting mechanical picking. In this article, I explore the differences between these two methods through the eyes of a winemaker with 25 harvests behind him in Portugal, Germany and the United States, and I share reflections on the future of harvesting in a context of climate change, labour shortages and market demands.
What Defines the Choice: Grape, Vineyard, Wine
Not every vineyard allows mechanisation, and not every wine style needs a hand-harvest. The choice of harvesting method begins with the destination of the wine: if the aim is a top-tier wine, from old plots or very steep vineyards, the option tends to be manual. Moreover, soils directly influence this choice: poor or stony soils, common in mountainous or hard-to-reach areas, make mechanisation unviable or counterproductive.
On the other hand, in flat vineyards with wide rows, on deep, regular soils such as clay or sand, and when the destination of the wine is early drinking or large volume, mechanical harvesting can be more efficient and economically viable. In these cases, the physical structure of the soil allows the machines to move without compromising the integrity of the plant, and the investment is quickly offset by the reduction in operating costs. So the soil is not just a support, but also a decisive criterion in the equation between tradition and efficiency.
Benefits and Limitations of Each Method
Hand-harvest
It allows precise selection bunch by bunch, fundamental for old-vine wines or for selective picking by degree of ripeness.
It is ideal for delicate grapes, grown in old vines or hard-to-reach sites.
The picking is done with greater care, preserving the integrity of the berries and minimising oxidation.
However, it demands more time, requires labour that is often not available and represents higher costs, especially in regions with less availability of workers.
Mechanical harvest
It offers speed and efficiency, being particularly advantageous on large estates.
It can easily be done at night, taking advantage of lower temperatures that reduce the risk of oxidation.
Although less precise, today’s technology allows a good degree of control, depending on the tuning of the equipment.
It can cause some damage to the berries or to the vegetation if the equipment is not suited to the type of vineyard, but it makes up for this with a significant reduction in operating costs, and it acts immediately.
Sustainability and Future: Middle Paths?
With the shortage of agricultural labour and rising operating costs, mechanisation has been gaining ground, especially in regions where the logistics defy traditional models. However, technological progress has brought solutions that allow mechanisation with more precision and less aggressiveness: harvesting systems that avoid crushing the berries and sensors capable of distinguishing the degree of ripeness of the berries.
These innovations have been particularly useful on medium and large estates, allowing efficiency gains without compromising quality too much. Even so, producers with an oenological sensibility and a focus on differentiation continue to bet on hybrid models: they use mechanical harvesting on flatter, more productive plots, where the impact is smaller, and keep the hand-harvest for special parcels, old vines or grapes destined for top-tier wines. This strategic approach ensures a balance between economic viability and respect for the identity of the terroir.
Conclusion
As a winemaker, I believe the harvest is a decision that reflects the philosophy of the producer. There is no single answer. There are wines that call for human hands, time and care. And there are wines that benefit from the precision and speed of technology.
What matters is that, whatever the method, the quality of the grape is not compromised. Because in the end, everything begins (and ends) in the vineyard.
From the page to the glass
- Monte Cascas Vinha das Lameiras — A 94-year-old Douro vineyard that yields one tonne. Lagar, 24 months in French oak.
- Cabo da Roca Centenary Vines — Baga from a 96-year-old vineyard, 24 km from the Atlantic. Foot-trodden in lagar.
