Scott) with the kind permission of Lincoln College, New Zealand.Д¬ontents Guide to Diagnosis Fungal Diseases Leaf Rust (Brown Rust) Stem Rust (Black Rust) Stripe Rust (Yellow Rust) Common and Dwarf Bunt (Stinking Smut) Karnal Bunt (Partial Bunt) Loose Smut Flag Smut Powdery Mildew Septoria Tritici Blotch Septoria Nodorum Blotch Septoria Avenae Blotch Spot Blotch (Helminthosporium Leaf Blotch) Tan Spot (Yellow Leaf Spot or Blotch) Alternaria Leaf Blight Fusarium Leaf Blotch (Snow Mold) Scab (Head Blight) Ergot Black Point Downy Mildew Take-All Eyespot (Strawbreaker) Sharp Eyespot and Rhizoctonia Root Rot Common Root Rot, Foot Rot, and Crown Rot Sclerotium Wilt (Southern Blight) Black Molds (Sooty Molds) Bacterial Diseases Bacterial Black Chaff and Bacterial Stripe Basal Glume Rot and Bacterial Leaf Blight Bacterial Spike Blight (Yellow Ear Rot) Viral Diseases Barley Yellow Dwarf Insect Pests Aphids Stink Bugs Armyworms, Cutworms, and Stalk Borers Cereal Leaf Beetle Thrips Hessian Fly Wheat Stem Maggot Sawfly White Grubs Wireworms Slugs, Snails, Grasshoppers, and Crickets Mites Nematodes Seed Gall Nematode (Wheat Nematode or Ear Cockle) Cereal Cyst Nematode Root Knot Nematode Physiologic and Genetic Disorders Physiological Leaf Spot Melanism and Brown Necrosis (False Black Chaff) Genetic Flecking Hybrid Necrosis (Dwarf Clumping) Mineral and Environmental Stresses Nitrogen, Phosphorus, and Potassium Deficiencies Minor Element Deficiencies Aluminum Toxicity Salt Stress Moisture Stress Heat Stress Herbicide Damage Frost Damage Glossary Line drawings are reproduced from 'New Zealand Pest and Beneficial Insects' (ed.Hatchett, USDA-ARS, Kansas State University, Manhattan, Kansas, USA. Gill, Agriculture Canada, Winnipeg, Manitoba, Canada, and photo 70, contributed by J. All photographs compliments of CIMMYT staff, except for photo 57, contributed by C.While most of the diseases, pests, disorders, or stresses included can be economically significant, some are not and are presented only because they are unique or might be confused with more economically significant problems. In the case of specific causal organisms, the perfect stage name (when known) is followed by the imperfect stage name in parentheses. Complementing this text and as an aid to the identification are numerous color photographs 1/, drawings 2/ and a brief diagnostic key.

The text comprises a brief description of the major wheat and triticale diseases, insect pests, nematodes, physiologic and genetic disorders, and mineral and environmental stresses.

It is intended primarily for agricultural researchers, technicians and farmers in developing nations, but will also be of value to others. This booklet is designed as a quick guide for identifying wheat and triticale diseases in the field. of Agronomy, University of Missouri, Columbia, Missouri. of Plant Breeding and Biometry, Cornell University, Ithaca, New York and K. Wong, USDA-ARS-WRRC, Albany, California D. HTML version developed with permission from CIMMYT by: J. INTERNATIONAL MAIZE AND WHEAT IMPROVEMENT CENTER ( CENTRO INTERNACIONAL DE MEJORAMIENTO DE MAIZ Y TRIGO. Wheat Diseases and Pests: a guide for field identification

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