Some questions about indoor farming

Dear Jane!

To your questions on nutrients:
The nutrient composition in good fertilizers (normally fluent in in-door farming) is healthy. However, I myself have seen when I grew plants in soil using the nutrients from fish manure (via aquaponics growth system) the plants were growing faster, more stronger, more healthy looking. My intuition points to the bacteria relasing minerals or other components from the soil to the plant roots, but this would need research. Likewise, I see my plants are also healthier looking when exposed to the sunlight compared with the artificial LED lighting.

Potential cost reductions:
In-door farming is normally more expensive than traditional farming, and would be related to the high energy costs for heating, humidity control and lighting. Be aware that the productivity gains in in-door farming would be achieved from technologies that also traditional greenhouse farming would take advantage of. So the advantages of in-door farming are more related to consumer proximity (freshness), energy and security costs on supply chains, cost of space for production.

Organic certification:
For the production of plants they need to be grown in soil and receive organic fertilizer. However, I would imagine there would also be requirements of access to natural daylight/sunlight. The rules might be different within the US and EU organic regime.

Hope that clarified your questions a little more.

KInd regards
Paul Kledal

Dear Jane,

You posted some very pertinent questions, which are quite similar ones that I have for a project that I am engaged with in Dubai. And I really like the responses from Paul. One of the people I am working with, well he is doing most of the work actually, is a farmer and professional engineer of Moroccan roots from France. He is growing an incredible variety of crops that are so flavorful (a very good indicator of quality and nutritional content) and unique (no one believed they could be grown here; for example Blue Bananas) that the top chefs in Dubai quickly discovered him and are in constant demand of what he produces. He is convinced that by feeding the soil not the plants directly, plus avoiding all synthetic pesticides (he uses a Neem based product he makes; plus benefits from the spiders and other insects/organisms (e.g. lizards) that prey on pest species), and using compost made primarily of waste food materials is why his produce is so highly sought after by chefs.

He is convinced that growing in soil, even the sands of Dubai, produces much better quality produce at much less cost than vertical and other indoor farms. I have tasted the produce from the local vertical farms, and well, it has not taste. The goal of these farms is to produce quickly and consistently a range of local produce.

Shortly we will do a lab analysis comparing the nutritional content of his produce versus the similar vertical farms in the area. The nutritional content of the produce from vertical farms is a question when posed to the operators or technology providers has been in my experience, one that has never been answered. At least they have not answered me.

There is a need and opportunity for both types of technologies/approaches to food security. But to date my experience is technology enhanced traditional agriculture is not only regenerative but provides the greatest number of benefits to people, from nutrition and taste to working and having direct contact with nature. Biophilia is an underappreciated aspect of regenerative farming, especially in the Urban Environment where we are now seeing how compatible agriculture and urbanism can be.

Another person involved in the project is the founder and owner of Planbee which is raising awareness about the importance of bees and other pollinators, and how we can and must protect them.

I will keep you posted as things progress. Especially the results of our nutritional analysis. We have been working on this initiative for over 1 year now, and progressing well.

With best regards,

Peter

Thanks for the replies

It is interesting that both of you suggested that plants seem to grow better in soil.

Paul Rye Kledal, I look forward to hearing the results of the nutritional analysis!

I am also curious about the nutritional value of hydroponic crops.

I found a book on ResearchGate, "Vegetables - Importance of Quality Vegetables to Human Health" which has a chapter "Hydroponic Production Systems: Impact on Nutritional Status and Bioactive Compounds of Fresh Vegetables". I thought it was an interesting read. The author claims that hydroponics has the potential to create produce with higher nutritional quality than conventional farming. But presumably that would depend on growers using techniques and nutrient solutions that create the optimal blend of bioactive compounds.