Isabella Hof

Meet the growers from our Ambassador Farm program.
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Ambassador
Ambassador

Bio

Isabella Hof is a pioneering organic onion farmer in the Netherlands, taking over the farm from her father, who paved a path at a time when the market for organic was lacking.

Now, they have two businesses: their farm and an onion-sorting company. The main crops on their 200-hectare farm include onions, seed onions and flax, and they also grow wheat, barley, sugar beets, potatoes and grass seeds. The onions they grow and purchase are exported and sold to consumers through retail outlets in the Netherlands.

Due to the pressure of chemicals on the soil and climate, they have seen yields decline and weeds, diseases and pests increase for years, both on their farm and those of their growers. Because of these concerns, Isabella started taking courses at De Oorsprong and Agrosymbio and has begun experimenting with regenerative practices. Isabella is passionate about building healthier soil, products and business, and involving their growers along the way.

Ambassador card

Ambassador since
2025
Type farm
Organic
Amount of hectares
200
Type of crop
Onions
Results since implementing StimBlue+
No items found.

“Even though we only applied StimBlue+ on a small area, we could clearly see a visual difference in the onions."

More Kelp Blue Ambassadors

Our farmer ambassadors use StimBlue+ across diverse regions, conditions, and crops. Each has a unique story. These are experienced, large-scale growers who put products to the test under real conditions. Click on each farmer to read how StimBlue+ fits into their operation.

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.​

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Niall Richardson

Bernardus Golf, located in Cromvoirt, North Brabant, The Netherlands, is a premier 18-hole championship golf course renowned for its commitment to sustainability and environmental stewardship.

Bernardus Golf has achieved the prestigious GEO Certified® status, a globally recognized distinction for environmental and social responsibility in golf. This certification reflects the club's dedication to sustainable practices across various aspects of its operations.​

Key sustainability initiatives include:

Eco-Friendly Turf Management: The course utilizes fescue grass species, which require less water and nutrients, reducing the need for irrigation and chemical inputs. This choice supports the creation of firm and fast playing surfaces, aligning with traditional golf playstyles.​

Water Conservation: An advanced irrigation system, guided by moisture sensors, ensures water is applied only where necessary. This targeted approach minimizes water usage and promotes turf health.​

Biodiversity Enhancement: Situated within a Natura 2000 site, Bernardus Golf collaborates with ecologists to monitor and promote local flora and fauna. Initiatives include creating habitats for native species and mapping biodiversity to guide conservation efforts

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Joost de Willebois

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.

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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

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