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Comment by davidhunter | Hacker News Reader

Exactly what we're doing (optimal.ag). Interestingly, the cannabis industry has taken all the equipment, knowhow and enthusiasm of the (Dutch) tomato industry and applied it to cannabis - not the other way around.

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First time I flew into Amsterdam it was dusk and I was mesmerized by the seemingly endless fields of greenhouses growing weed. Only years later (after telling everyone about it) did I learn they were actually growing produce :D

Dutch tomatoes have a reputation for being bland ("water bombs"), is making more flavourfull ones just product focus? Like picking the right varietal, picking them at the right time, delivering quickly, etc?

>First time I flew into Amsterdam it was dusk and I was mesmerized by the seemingly endless fields of greenhouses growing weed. Only years later (after telling everyone about it) did I learn they were actually growing produce :D

Lol - yeah the production of cannabis is not yet legalised in The Netherlands.

This is a great article on the Dutch greenhouse industry (unfortunately behind paywall): https://www.nationalgeographic.com/magazine/article/holland-...

>Dutch tomatoes have a reputation for being bland ("water bombs"), is making more flavourfull ones just product focus? Like picking the right varietal, picking them at the right time, delivering quickly, etc?

I've heard this before too. Maybe this was a thing at one point in history but it's not true any more. If you go into a supermarket today in Europe then all the tomatoes on offer will have been grown in greenhouses. The low-end stuff will have been grown in Spanish/Moroccan low-tech greenhouses (plastic tunnels). The higher-end stuff will have been grown in Dutch glasshouses.

I wouldn't call it "Low-tech" greenhouses in Spain. Is exactly the same stuff than dutch ones, the same seeds and the same bumblebees and the same chemicals, except by the Mediterranean climate and much more sun. (And I wouldn't be surprised to find that some of the Dutch tomatoes sold at an extra price are really cultured in Spain by Dutch companies).

Beyond genetics and environment, soil/nutrient fertility also affects the taste. For example, drought-stressing tomatoes near harvest generally improves flavor at the cost of yield, both by the obvious mechanism of adding less water and by more complicated interactions with the biosynthesis of flavor compounds.

In hydroponics the same improvement is achieved by increasing the nutrient solution concentration (since that's what drought stress looks like to the roots), often literally with salt, NaCl. Growers will typically describe this as raising the solution electrical conductivity, EC, since that's an easily-measured proxy for total dissolved ionic stuff. Hand-held EC meters cost a few dollars, or large systems often run with closed-loop measurement and dosing similar to my

https://github.com/hydromisc/hydromisc

In Europe, tomatoes are Dutch and feed the more southern countries. In North America, Canada imports tomatoes from the US in winter!!

Technically true, but Canada exports more tomatoes to the US than it imports. It is the 5th largest tomato exporter in the world. Here's an article about tomato growing in Canada: https://www.npr.org/sections/thesalt/2016/06/16/473526920/ho...

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