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BASIS > Disease + Fungicides > Flashcards

Disease + Fungicides Flashcards

1
Q

Fungicide chemical groups

A

Strobulins - amistar
Triazoles - plover, rudis
SDHI
Phenylamides - SL567A (oomycetes)
Dithiocarbamates - mancozeb
CAAs - revus
Biological - serenade

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2
Q

Club root brassicas

A

Soil borne 20 years
Rotation
Hygiene
Variety
ph7.5

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3
Q

Leaf spots brassicas

A

Alternaria, phoma, ringspot, light leaf spot
Disease forecast
Variety/cultivar
Field walk
Amistar top, Nativo, Plover, Rudis, Perseus

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4
Q

Powdery mildew brassicas

A

Signum, Perseus, amistar top, Nativo, plover, rudis

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5
Q

Oomycetes brassicas

A

Downy mildew, white blister
Rotation
Bury trash
Infinito, SL567A (check approval), Revus

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6
Q

Sclerotinia

A

Rotation, bury trash
Signum, Perseus

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7
Q

Xanthomonas

A

Seed borne bacteria 2 years
Clean seed
Rotation
Bury trash
Keep leaves healthy - Amistar Top

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8
Q

Spear rot brassicas

A

Bacterial
Variety
Nutrition

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9
Q

Storage diseases brassicas

A

Botrytis, Phytopthera
Good hygiene
Pre store drench of Serenade
Store management
Careful handling

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10
Q

Blight genotypes

A

Dark green 37 resistant to fluazinam
EU43 resistant to CAAs + oxathiapiprolin

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11
Q

Hutton period

A

2 days of >10 degrees
2 days of 6 hours RH >90%

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12
Q

Blight control

A

Eliminate dumps, volunteers, dont plant where cant spray
Start fungicides at rosette stage, every 7 days
Early season: inifinto, zorvec
Mid season: privest (persistant protectant)
Late season: ranman top (zoospore acitivty)
Loss of mancozeb - key multi site, increases chance of resistance

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13
Q

Alternaria potatoes

A

Warm + wet
Small brown lesions that cross veins
Minimise crop stress
Include mancozeb, carial star, narita, signum into blight programes

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14
Q

Rhizoctonia

A

Stem cankers, black scurf
Seed + soil borne
Lengthen rotation, seed hygiene, plant into warm soil
Maxim seed treatment
Amistar into soil

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15
Q

Black dot potatoes

A

Soil borne
Rotation
Amistar in soil

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16
Q

Powdery scab potatoes

A

Wet + cold
Good drainage, healthy seed, resistant varieties

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17
Q

Common scab

A

Light alkaline soils
Piper susceptible
Use stronger varieties
Irrigation at tuber initiation

18
Q

Blackleg potatoes

A

From infected seed
Can be same bacteria as soft rot
Good store management, healthy seed

19
Q

Downy Mildew Onions

A

Warm wet summers
Forecasting, good hygiene, rotation
Infinito, Zorvec, Unicur (onions)
Spray according to risk (5TL latest onions) then once a week

20
Q

Leaf blotch onions + leeks

A

Good hygiene
Rotation
Unicur (onions) Amistar top (leeks)

21
Q

Leek rust

A

Amistar Top
Nativo
Rudis

22
Q

White tip leeks

A

Oomycete
Inifinito

23
Q

White rot

A

40 years
Soil test
Hygiene
Rotation
Signum

24
Q

Fusarium

A

Hot + wet
Smells
Rotation, hygiene, good drainage

25
Q

Neck rot

A

Carried by seed
Seen in store
Hygiene, rotation
Maxim seed treatment, switch

26
Q

Black + Blue mould

A

Avoid damage to bulbs
Store management

27
Q

Bacterial rot

A

Good hygiene
Fast harvest
Serenade

28
Q

Sprout control onions

A

To be stored beyond december
Apply MH pre harvest (10-14 days)

29
Q

Cavity Spot

A

Soil fungi Pythium 10 years
Warm + wet
Site selection, less susceptible varieties, rotation
SL567A 1st TL

30
Q

Sclerotinia Carrots + Parsnips

A

Wetter areas after full canopy
Rotation, care with irrigation, early harvest
Signum + Perseus before canopy closure

31
Q

Alternaria Carrots

A

Forecasting
Amistar Top, Nativo, Signum

32
Q

Powdery Mildew Carrots

A

Hot dry from july
Amistar Top, Nativo, Signum

33
Q

Crown Rot Carrots

A

When crop damaged
Control other diseases

34
Q

Violet root rot

A

Soil borne 15 years
Rotation, site selection

35
Q

Downy Mildew Lettuce

A

Warm + wet, debris, resting spores
Forecasting, plough trash, rotation, resistant varieties
Infinito, Revus, Orondis, Amistar (Check HI)

36
Q

Botrytis

A

Wet damaged tissue
Minimise plant damage
Amistar, Signum, Switch

37
Q

Sclerotinia lettuce

A

Wet soil borne
Rotation
Contans pre planting
Signum, Perseus, Amistar

38
Q

Leaf + Pod spot, D.Mildew, Botrytis, Footrot peas

A

Good rotation, drainage
Amistar, Switch, Signum

39
Q

Cultural control diseases

A

Bury trash
Remove host weeds
Rotation
Varieites
Site selection
Timing

40
Q

Brassica Virus

A

Turnip Yellow, Cauliflower Mosaic
Aphids

41
Q

Products for oomycetes

A

Infinito
SL567A
Revus
Mancozeb
Zorvec

BASIS (6 decks)

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