> This makes it easy to identify crops
...until they evolve to emit the same spectrum of light as the crops being harvested! Cuz you know that's going to happen.
...until they evolve to emit the same spectrum of light as the crops being harvested! Cuz you know that's going to happen.
The answer is to select according to a wide range of criteria, and not rely on a single one. That way, weeds cannot progressively acquire resistance, and need to check all the boxes at once, which makes it highly unlikely that they will pass on their "slightly better" genes.
And of course, the larger the scale you employ a single weeding system at, the more risky it gets. It would be great for supplementing herbicide (while lowering doses) at first, for instance.
Examples of this are Rye and Oats.
Crops are planted in a specific pattern, at a specific time, grow at a specific rate, and have a unique shape. So you have a lot of information to work with.