
Bio
Joost de Willebois is the founder and owner of Domaine J. de Villebois, a family-run winery in France's Loire Valley.
Originally from the Netherlands, Joost descends from a French lineage dating back to 1180. In 2004, he and his wife, Miguela, acquired a 10-hectare vineyard in Mareuil-sur-Cher, marking the beginning of their winemaking journey.
They focused on producing Sauvignon Blanc, aiming to become specialists in this varietal within the Loire region. Over the years, the domaine expanded its reach across key appellations like Sancerre, Pouilly-Fumé, and Menetou-Salon.
Joost transitioned from a career in finance to dedicate himself fully to winemaking, emphasizing sustainable practices. Today, Domaine J. de Villebois is recognized for its high-quality Sauvignon Blancs and commitment to environmental management.
Ambassador card
The soil microbiome plays a critical role in optimizing crop yields, nutrition, and stress resilience. To assess the impact of StimBlue+ on the microbial pathways essential for wine grape development, we partnered with Biome Makers, a leader in assessing soil health at scale. Through their rigorous analysis, we examined the influence of StimBlue+ on soil microorganisms and their functions, providing incredible insights into how our product enhances soil health and vine performance. The tests were done on the vineyards of Domaine J. de Villebois.
Testimonial from BiomeMakers:
"With StimBlue+, we saw a unique boost in nutrient availability. Even through foliar application, BeCrop analysis confirmed these effects across fields, highlighting the reach and effectiveness of this biostimulant" Juan Rebori, BiomeMakers
More Kelp Blue Ambassadors
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Sven Bruchfeld & Gonzalo Muñoz
Established in 2002 by winemakers Sven Bruchfeld and Gonzalo Muñoz, Polkura focuses on producing high-quality Syrah wines that reflect the unique terroir of the region. The name "Polkura" means "yellow stone" in the Mapuche language, referencing the area's yellow granite soils. These decomposed granite soils, combined with clay, contribute to the wines' minerality, body, and structure.
Situated approximately 30 kilometers from the Pacific Ocean, the vineyard benefits from a Mediterranean climate with significant marine influence, moderated by the coastal mountain range.
Since 2009, Polkura has implemented a dry farming project known as "Secano," cultivating 2 hectares without irrigation, later expanding to 5 hectares. This approach emphasizes minimal intervention, relying solely on natural rainfall to express the purest form of the terroir.
To optimize water retention, vines are planted on flat terrain with clay-rich soils and at a lower density of 2,500 plants per hectare. The Gobelet training system is employed, with shoots tied to individual stakes to protect the fragile Syrah vines from breakage.

Alfonso Chico de Guzmán
La Junquera is a pioneering regenerative farm located in the Altiplano region of Murcia, southeastern Spain.
Spanning approximately 1,100 hectares, it stands as one of Europe’s largest regenerative agriculture projects, operating in one of the most desertified areas of the Iberian Peninsula. La Junquera transitioned to organic farming in 2010 and adopted regenerative practices in 2015. The farm's methods focus on restoring soil health, enhancing water retention, and boosting biodiversity. Key practices include:
Soil Regeneration: Utilizing cover crops, vermicomposting, and minimal tillage to improve soil fertility.
Water Management: Constructing swales, ponds, and sediment traps to capture and distribute rainfall efficiently.
Biodiversity Enhancement: Planting native species, establishing wildlife corridors, and integrating livestock like the endangered Murcian-Levantine cow to promote ecosystem balance.
These efforts have led to a significant increase in soil organic matter, from 2% to 6%, and the restoration of 2,500 hectares of degraded land.
Besides their farming efforts, La Junquera hosts the Regeneration Academy, led by Yanniek Schoonhoven, offering educational programs in agroecology, soil conservation, and sustainable farming.
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Marcos Esteve
Marcos Esteve Pamias is a Spanish farmer, mechanical engineer, and full-stack developer leading a cutting-edge precision agriculture initiative on his family's 220-hectare farm in Valdorba, northern Spain. Specializing in wheat, barley, and oats, he integrates advanced technologies to enhance sustainability and efficiency in farming practices.
Marcos transitioned from organic to precision farming in 2017, aiming to reduce environmental impact and resource use. His approach includes:
Drone and Satellite Imagery: Utilizing multispectral drones and platforms like PIX4Dfields and SatAgro to monitor crop health and identify issues such as weed infestations.
Targeted Applications: Creating prescription maps for variable-rate applications of herbicides and fertilizers, leading to significant cost savings and reduced chemical usage.
Real-Time Weather Data: Employing iMETOS 3.3 weather stations to optimize spraying times and improve decision-making based on localized forecasts.
These practices have resulted in a 56% reduction in herbicide costs and enhanced overall farm sustainability. Beyond farming, Marcos contributes to agricultural innovation by developing a virtual fertilization advisor to further optimize nutrient applications.
Transform Your Farm with StimBlue+
Ready to boost your yields and enhance soil health? Contact our team of agronomists to learn how StimBlue+ can benefit your farm. Our team is ready to answer all your questions, comments, and requests.
Or give us a call, WhatsApp only:
+32 (0)4 70 80 64 57