Spray his crops with something that will 100% kill all of his original crop and only keeping the cross contaminated crop, which he will then specifically cultiv

Spray his crops with something that will 100% kill all of his original crop and only keeping the cross contaminated crop, which he will then specifically cultivate. Common now, it's really a shut and close case. He had no explanation as to an alternative valid reason to have done so and lost the case.