cereal staging - Bayer CropScience

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ContributorsJamie LarsenPhD. CandidateDepartment of Plant AgricultureUniversity of Guelph - Technical InformationMike CowbroughProvincial Weed SpecialistOMAFRA - Technical ReviewDuane FalkAssociate ProfessorDepartment of Plant AgricultureUniversity of Guelph - Technical ReviewGilles QuesnelField Crops, IPM Program LeadOMAFRA – Technical ReviewTracey BauteEntomology, Field Crops Program LeadOMAFRA – Technical ReviewPeter SmithField TechnicianDepartment of Plant AgricultureUniversity of Guelph – PhotographyAlbert TenutaPathologist, Field Crops Program LeadOMAFRA – Technical ReviewPeter JohnsonProvincial Cereals SpecialistOMAFRA – Technical Review
The Importance ofCereal StagingProfitable small grain production requires a thoroughknowledge of crop development. When required,proper application timing of inputs such as fertilizer,plant growth regulators, herbicides and fungicides iscritical to maximizing product performance, yieldand profitability. Being able to properly identify thevarious stages of crop development can help growersknow when inputs should be applied.Identifying Growth StagesHow to select plants in a fieldTo get a good sample of plants in a field, select asingle plant from 10 locations in each field. Selectthe locations using an “M” or zig-zag pattern.That’s why Bayer CropScience, the Ontario Ministry ofAgriculture, Food and Rural Affairs and the University ofGuelph cooperated to produce this easy-to-usestaging guide with high quality photographic images.While several development scales are available, thisguide will use the Zadoks 1 scale. This scale followsplant development through 10 primary developmentalstages (first digit), sub-divided into secondary growthstages (second digit) to produce a two-digit scalenumber. The primary stages are defined in thefollowing table.Code Description0 Germination1 Seedling growth2 Tillering3 Stem Elongation4 Booting5 Inflorescence emergence6 Anthesis7 Milk development8 Dough development9 RipeningTo randomly select plants, drop to one knee andplace your index finger on the ground. Dig up theentire plant nearest your finger.1. Zadoks, J.C., Chang, T.T. & Konzak, C.F. (1974) A decimal code for the growth stages of cereals.Weed Research 14, 415-21.
Page 1: 1-888-283-6847www.bayercropscience.
Page 5 and 6: How to Handle Plants1Roots2Crown3Se
Page 7 and 8: 4. Has the flag leaf emerged?• Th
Page 9 and 10: Zadoks Staging KeyStage 0: Germinat
Page 11 and 12: Z 13 3 leaves unfolded Z 14 4 leave
Page 13 and 14: Z 22 Main shoot and two tillers Z 2
Page 15 and 16: Stage 3: Stem Elongation• For win
Page 17 and 18: Z 322nd node detectable (Z16/Z20/Z3
Page 19 and 20: Swollen bootSwollen stemZ 43 Boot j
Page 21 and 22: Stage 5: Heading(Inflorescence emer
Page 23 and 24: Z 64Pollination half wayZ 68Pollina
Page 25 and 26: Stage 7: Milk developmentStage 8: D
Page 27: 123456PaleaLemma5th floret6th flore

cereal staging - Bayer CropScience

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