P. Barker from Brighton used Orgonite to aid his beetroots, which were fast to germinate and grew strongly. He was rigorous in his methodology, planting two identical patches in his allotment - one with Orgonite and one without - and growing organically (see YouTube video):
He says: "At first, I was mildly surprised by the different crops. The area was mostly root crops - parsnips and different types of beetroot and some early carrots. The plot with Orgonite at each corner produced a whole lot more than adjacent plots. I ended up giving a lot of my produce away. A major surprise was a crop of self-sown tomatoes in between the beets. Normally I can't get tomatoes to grow outside so this was an unexpected bonus."
These experiments have been going on informally for some time, and a quick Google will bring up many pages on the subject. I couldn't find the article on the FT website, but with a little digging I discovered that it is based on a press release sent out by journalist Mark Bennett (who also wrote the FT article) and researcher Don Croft (whose name may be familiar to forum members).
The original press release, from which the above quote is taken, can be found here.