I know there is a problem with ‘pests’ in agriculture. I know.
But from the point of view of the fungus, the wheat is the pest. Right? That is how nature/biodiversity works. If one species reaches plague proportions, like a vast field of wheat with nothing else growing in it, another comes in to take advantage of it.
That is the reason why we don’t see quintillions of wall-to-wall cockroaches, rats, or anything else taking over whole cities, countries, continents and eventually the entire planet with nothing else in sight. Because as soon as that happens, natural predators have a field day with them until the balance is restored.
That is the fundamental problem with modern agriculture isn’t it? The monocrop. So I don’t see how spraying ever-increasing quanities of poison onto the one species of plant you are trying to grow is going to change this fact. Even if you genetically engineer new species of wheat, the same principle applies. It’s like asking nature to change. It won’t ever happen because that’s the ‘nature’ of nature.
I think you need a different approach, to grow different species together.
Maybe let the birds and frogs take care of the insects?
Same goes for humans, if there are too many humans, a disease will eventually come along and wipe half of us out too.