Preface An internationally acceptable scale for recording the growth stages of cereals is clearly desirable. Such a scale should he acceptable to agronomists, plant breeders, plant pathologists, plant physiologists, taxonomists and all others concerned with recording details of crop growth. The decimal code developed hy Zadoks, Chang and Konzak has been widely recognized as the hest scale available. It was considered in detail by a committee comprising experts in the disciplines concerned, who made a number of proposals which have heen incorporated in the scheme which has been published in mimeographed form by Eucarpia (The European Association for Research in Plant Breeding) and is now puhlished here. It is also hoped that it will he puhlished in America in the Wheat, Oat and Barley Newsletters. Users of the code should appreciate that it refers throughout to individual plants, or, where appropriate, to the main shoots of such plants, and that the growth stages described are not mutually exclusive. A plant may, for example, he equally well described in terms of the number of leaves unfolded on its main shoot or in terms of stem elongation. At the same time the numher of tillers developed is more likely to
Weed Research – Wiley
Published: Dec 1, 1974
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