Oh, now you're really challenging my mind! This research was about 12 years back, when a couple people on another forum were trying to persuade me to do this method. It involves planting and hardscaping the tank, but not adding water other than keeping the spoil moist. The avoidance of ammonia is one benefit, another is the aerial advantage we all know about for CO2. Aquatic plants whose leaves are in the air are able to take up CO2 four times faster than when submersed and relying on CO2 in the water, so you get a faster and stronger start. Here is a link that from a cursory look seems to be reliable.
Written by Bryson and Team Buce Plant The initial weeks of starting a planted aquarium are often the most frustrating. You might experience plants that seem set on floating and sparse growth. Let me introduce you to the dry start method (DSM). This bad boy solution gives you the opportunity to...
buceplant.com
You could browse Diana's forum of course, you can find the web address by searching for "Diana Walstad forum" as we are (correctly) not allowed links to other forums.