R2013 5 DISORDERS Flashcards
1
Q
Symptoms and avoidance: Frost
A
S:
- Leaf scorch
- Blossom turning brown
- Tender perenial stems turn black
- Damage to blossom and young fruits in Spring
A:
- Fleece or cloche protection
- Hardy plant selection
2
Q
Symptoms and avoidance: Shade
A
S:
- Etiolation
- Spindly growth
- Yellowing of the foliage
A:
- Plant shade tolerant plants
- Move plants to a sunnier spot
3
Q
Symptoms and avoidance: Drought
A
S:
- Drying, crispy, curling foliage
- Bolting
- Wilting
A:
- Plant drought tolerant plants
- Mulching
- Install irrigation system
4
Q
Symptoms and avoidance: Water-logging
A
S:
- Wilting of the plant
- Stunted growth
- Anaerobic conditions in plant roots
A:
- Carrying out deep cultivation
- Raised beds
- Improving soil structure
- Drainage holes in container
5
Q
Symptoms and avoidance: High temp. damage
A
S:
- Sun scald
- Brown foliage, flowers and fruits
A:
- Use shading under glass
- Increase humidity
- Appropriate planting
6
Q
Symptoms and avoidance: Low temp.
A
S:
- Stunted, poor growth
- Seedlings failing to germinate
A:
- Plant hardy plants
- Plant tender and half-hardy plants after frosts
- Fleece protection
7
Q
Symptoms and avoidance: Soil pH (and lime induced chlorosis)
A
S:
* Yellow leaves, interveinal chlorosis
A:
- Lowering soil pH
- Avoid irrigating with hard water
8
Q
Symptoms and avoidance: Fasciation
A
S:
- Plant shoots flattened or fused
- Flower heards distorted, elongated, misshapen
A:
No avoidance
9
Q
Symptoms and avoidance: Rose balling
A
S:
- Outside petals rot and stick together/ fused, forming a ball
- Buds soft and slimy
A:
- Pruning to improve air circulation
- Plant resistant cultivars
- Don’t water overhead
10
Q
Symptoms and avoidance: Wind damage
A
S:
- Scorched leaves
- Ripped leaves
- Blossoms blown off
A:
* Provide rotention using artificial or natural wind breaks
