Scientists from New Zealand’s Ministry for Primary Industries (MPI) are developing a low-cost diagnostic tool that could significantly boost staple crop production in developing countries. The rapid test — the PlantdX2.0 tool — uses a combination of chemistries to spot plant disease. It will enable growers to weed out unhealthy plants in the field while it’s still early in the growing season. This can increase the production of key crops, which serve as crucial food sources worldwide.