crop id

Crop Identification

Overview of Crop Types

• Primary Crops Discussed:
    - Wheat
    - Barley
    - Oats
    - Canola
    - Mustard
    - Lentils
    - Field Peas
    - Flax
    - Canary Seed
    - Chickpeas

Distinct Features of Various Crops

Wheat

• Leaf Characteristics:
    - Leaves twist clockwise
    - Small auricles characterized by hair
    - Ligule: Medium height, colorless with minute hairs
    - Sheath and blade: Hairy and clasping auricles

Barley

• Leaf Characteristics:
    - Leaves twist clockwise
    - Auricles: Prominent, smooth, long, clasping
    - Ligule: Short, hairless and colorless

Oats

• Leaf Characteristics:
    - Leaves twist counter-clockwise
    - Early stage leaves have small hairs on margins
    - Auricles: Absent
    - Ligule: Tall and toothed

Anatomy of Leaves

• Types of Leaves:
    - Simple
    - Pinnately Compound
    - Palmately Compound

Leaf Anatomy Terms

• Definitions:
    - Blade: The broad, flat part of the leaf.
    - Petiole: The stalk that attaches the leaf blade to the stem.
    - Stipule: Leaf-like structures found at the base of leaf stalks.
    - Leaflet: Smaller divisions of a compound leaf.

Inflorescence Types

• Definitions of Inflorescence Structures:
    - Panicle: Compound raceme with one or more branches attached at nodes.
    - Raceme: Elongate structure with equal length pedicels bearing flowers.
    - Spike: Sessile flowers directly attached to the rachis.
    - Corymb: Pedicels of unequal length form a flat-topped configuration.

• Examples:
    - Panicle (Oats)
    - Raceme (Brassicas)
    - Spike (Wheat)
    - Corymb (Flax)

Detailed Characteristics of Wheat

• Spikelets:
    - Attached alternately.
    - Can have 1 to 7 florets together.
    - Large paleas, lemmas, and glumes can result in seeds wrapped in lemma and palea.

• Growth Conditions:
    - Awns protruding at 45°.
    - Color variation in ripe seeds: red to white.

• Kernel Characteristics:
    - Short, oval or square shape, dark to light red.
    - Round base and penny-like germ.
  
  

Additional Wheat Characteristics

• Auricles: Hairy, short, slender and clasping

• Blade & Sheath: Always hairy

• Ligule Length: Intermediate to long length

Detailed Characteristics of Barley

• Inflorescence Structure:
    - Spiked with one awn per lemma at the tip.

• Spikelet Formation:
    - Stack formation along Nodes.
    - Six row: Overlapping outer kernels creating twisting.
    - Two row: Straight kernels without overlapping.

Additional Barley Characteristics

• Auricles: Long, clasping, typically hairless

• Blades: Typically hairless with possible sparse hairs

• Ligule: Very small

Oats Characteristics

• Panicle Inflorescence:
    - Attaches to central axis with branches
    - Glumes encapsulate 2-3 florets

• Spikelet Connection:
    - Forms at ends of branches.

Key Features of Oats

• Lemmas: Smooth with non-prominent veins, blunted tips

• Awns: Typically absent or non-prominent

• Blade & Sheath: Hairless or sparse hairs

Comparing Canola and Mustard

Seedling Characteristics

• Canola (Brassica napus):
    - Heart-shaped cotyledons, hairless leaf stalks
    - First leaves: Hairless upper surface, sparse hairs below

• Brown Mustard (Brassica juncea):
    - Heart-shaped cotyledons, hairless leaf stalks
    - Hairs present on both surfaces of first true leaves

• Yellow Mustard (Sinapis alba):
    - Heart-shaped cotyledons with edges having some hairs, stems hairy

Adult Leaf Characteristics

• Canola:
    - Dark bluish-green, waxy, hairless or few sparse hairs, rounded leaves

• Brown Mustard:
    - Pale green, hairy

• Yellow Mustard:
    - Dense pubescence, deeply lobed lower leaves, upper leaves are narrower

Flower Characteristics

• Canola:
    - Yellow, smaller than brown mustard flowers

• Brown Mustard:
    - Pale yellow flowers

• Yellow Mustard:
    - Similar flowering structure

Pod Characteristics

• Canola:
    - Long, narrow pods with a smooth, conical peak

• Brown Mustard:
    - Long, conically-shaped pods, 45° to stem

• Yellow Mustard:
    - Long, flat with hairs, positioned at a right angle to the stem

Seed Characteristics

• Canola:
    - Black, spherical to oval, larger than brown mustard seeds

• Brown Mustard:
    - Reddish-brown, 2 mm or less in diameter

• Yellow Mustard:
    - Creamy yellow to yellow with spherical/oval shape, size 2-3 mm

Characteristics of Lentils

• Individual Leaves:
    - Compound, made of two or more pairs of leaflets

• Leaf Types:
    - Scale leaves: Bifoliate
    - True leaves: Multi-foliate

• Arrangement:
    - Alternating on stem with opposite leaflets

Characteristics of Field Peas

• Leaf Structure:
    - Can be semi-leafless or leafed
    - Opposite leaflets, alternate leaves

• Seed Characteristics:
    - Seeds can be smooth or wrinkled; yellow or green

Characteristics of Flax

• Plant Structure:
    - Average height: 0.9 to 1.2 meters (3 to 4 feet)
    - Slender stalks: 2.5 to 4 mm (0.10 to 0.15 inch)
    - Flowers: Five petals (blue, occasionally white or pink)

• Seeds:
    - Small dry capsules composed of five lobes

Characteristics of Canary Seed

• Seedling Appearance:
    - Resembles green foxtail, finely leafed, purple to red base

• Height:
    - Approximately one meter, with small compact heads

• Irritation Issue:
    - Some varieties possess sharp silica hairs that irritate skin during handling

Characteristics of Chickpeas

• Leaf Structure:
    - Pinnate with opposite leaflets, typically 5 cm long with 9-15 leaflets

• Height:
    - 30-70 centimeters with erect growth

• Seed Pods:
    - Short, inflated with one to two seeds
    - Seed color varies by type:
      - Kabuli: Cream to white
      - Desi: Green, purple, brown, or black

Conclusion

The study of crop identification encompasses various species with distinct botanical characteristics that aid in the recognition and classification of agricultural plants in Saskatchewan. Key features include leaf structure, inflorescences, seed characteristics, and pod types, which are vital for effective identification and analysis in agricultural practices.