Potato growers are being reminded to risk assess their crops ahead of harvest this season and, where appropriate, carry out pre-harvest residue testing of tubers where granular nematicides have been applied at planting. The guidance, supported by the Nematicide Stewardship Programme (NSP), aims to help growers follow established best practice and safeguard both crop assurance compliance and the long-term future of granular nematicide use. Independent agronomist Simon Alexander says: “Growers should take a representative sample from the treated area, selecting tubers from multiple plants across the field in a ‘W’ shaped pattern. “This sample should contain at least 2.5kg of…