Hi everybody!
An idea I've had to promote growth for vegetables, crop etc...

In moderately warm and sunny countries, some vegetables grow badly or late. The idea would be to concentrate solar light a bit on these vegetables by using mirrors that would also reduce light for other plants that require dimmer light.

I imagine fields organized in stripes, East-West, alternating stripes of light-loving plants with light-shy ones, and mirrors between them.

Being East-West, the mirrors just need to be tilted (one single rotation) to compensate only the Sun's height.

Glass is probably too expensive, heavy, fragile. I imagine steel plates, say 3m by 6m, reinforced by forming the rear one in a press and soldering it electrically to the flat front one, like a car door is made. Chromium plating would make it reflective and corrosion free.

To make the mirror somewhat transparent, I would punch many small holes (with one big hydraulic press as usual) in the metal. Small enough to let diffraction as well as the Sun's diameter create a uniform illumination behind the mirror.

Another benefit would be that plants become light from opposite directions. Strawberries and tomatoes would be ripe on both sides at the same time, that's fine!

OK, that was it. Sorry for interrupting you. Bye!

I had the thought as well. My difference was to use aluminized mylar sheets with wind vents, on a framework of light tubular material. Two clock drives could control the altitude and azimuth, like a telescope mount.

Great minds think alike, eh?

You could also grow the 'high sunlight' plants overtop the 'low sunlight' plants, and allow the upper plants to provide shade.

Though it seems crazy expensive to implement.

"Space Blankets" and old umbrellas, plus a couple of bicycle hulks? How about a barrel-fed water clock to drive the gear train and water the garden as well?