Syngenta Crop Protection, Inc.

Elmar Kerber

Max Angst

Duncan McKenzie

Adel Morcos

A method of reducing damage to plant propagation material and plant organs which grow at a later time by a representative of the class Nematode, which method comprises (I) treating the propagation material with (A) a chelating agent, and optionally (B) a macrocyclic lactone compound or another pesticide, before the material is sown or planted, or (II) applying (A) a chelating agent, and optionally (B) a macrocyclic lactone compound or another pesticide, to the locus of the material or the treated material defined in (I) before its planting, and/or at its planting and/or during its growth.

Method of reducing nematode damage

Potato quality is improved by applying to the plant or to the locus of the plant a composition comprising (a) a compound capable of forming a chelate with iron or (b) a chelate of iron with a chelate-forming compound. Specific quality improvements include increasing the dry matter content, increasing the starch content and reducing the reducing sugar content. A preferred iron chelate is that of EDDHA, available commercially as SEQUESTRENE 138 Fe 100.

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Dielsdorf, Switzerland

Elmar Kerber