Catharanthus roseus (Vinca rosea) Part I Successful germination
Syngenta Flowers APAC Technical Webinar for Tropical Regions 09-18-2024 2 p.m.
Inka Orange 70041091
Catharanthus assortment overview
Series
Genetic
Pot size Width Height
Habit
Application
Specific features Extra disease resistance Extra disease resistance
Landscaping / Patio pots
Cora XDR
Syngenta 10-12 30-40 25-26 Mounding
Cora Cascade XDR
Syngenta 10-12 80-90 20-25 Spreading Hanging baskets
Patio pots / Landscaping Patio pots / Landscaping Patio pots / Landscaping Patio pots / Landscaping
Earliness
SunStorm Syngenta 9-11
25-30 25-30 Upright
Big pots
Blockbuster
Floranova 10-12 30-40 25-30 Mounding
Small pots / Packs
Cobra
Floranova 10-12 30-40 25-30 Mounding
Packs
SunJewels
Floranova 9-11
30-40 25-30 Upright
Page 30 – 2024/25 Catalog Syngenta Flowers
Floranova
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Catharanthus portfolio
Cora XDR
Cora Cascade XDR
Blockbuster
SunStorm Cobra
SunJewels
Landscape / Pots
Hanging baskets
Patio pots
Small pots / Packs
11+1 colors & 2 mixes
10 colors & 1 mix
15 colors & 2 mixes 10 colors & 2 mixes 13 colors & 1 mix 8 colors & 1 mis
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Catharanthus opportunity
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5 components of success with Catharanthus
Right genetics
Fungicide rotation!
Hygiene!
pH < 5.8!
Phytophtora!
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What is XDR genetic?
Right genetic
Let’s make your choice
Phytophthora damage
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What is XDR genetic?
Right genetic
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Hygiene. What is quarantine?
Hygiene
Young plants only !
Ready plants
9:00 am
Seeds
Mind a gap!
New materials only!
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Hygiene. Sources of infection!
Hygiene
Water
Ready plants & weeds
Old trays / material
Plant residuals
People
Substrate
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Hygiene. Mind a gap! • No matter what kind of method you will use trays bottom shouldn’t touch greenhouse floor.
Hygiene
Small gap…
…or big one
Doesn’t matter it should be
Ground should be covered!
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Hygiene. Clean substrate.
Hygiene
• Don’t use natural composts for Catharanthus seedlings! • Cocopeat preferable. • Peat on the base of wood fiber. • Leavening agent: perlite > vermiculite > zeolite > sand.
Wood fiber peat
Avoid substrates on the base of plant residuals
Cocopeat
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Keep pH < 5.8
pH < 5.8
• Porous substrate (Up to 20―30% of perlite). • Rinse cocopeat well.
• leavening agent: perlite > sand > zeolite > vermiculite. • Sift the substrate to obtain a uniform particle size 0―5 mm • pH range: 5.5―5.8(5.9)
6
2 3 4 5
7 8
• SME: 0.5 mS/cm • Saturate substrate up to level 5 right before sowing. Level 5 SATURATED Level 4 WET Level 3 MEDIUM Level 2 MEDIUM DRY Level 1 DRY
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Sowing / germination stage
• Suggested tray size – 288 cell • Seed – place 1 seed per cell • Do I need to cover the seed? yes Light is not required • Germination chamber - optional • Soil Temp: 23―24 0 C
18 19 20 21 22 23 24 25 26
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How to add acid?
pH < 5.8
1
Start with higher pH level
6
2 3 4 5
7 8
Add a bit more (1 ml) acid
Lower
7
6
If pH 5.5?
Yes
2
3
4
5
Fill tank with water 100 l
Check pH (7.3)
Add acid < 5 ml
Add 05
Higher
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Add a bit more water
Catharanthus disease management
Fungicide rotation!
Most common Catharanthus seedling diseases.
Disease
Active ingredients (rate in chemical)
Active Ingredient concentration in solution g/l*
Use as prophylactic
iprodione (50%)
1.25 g/l
tetrachloroisophthalonitrile (82.5%)
0.83–1.2 g/l 0.5–0,75 g/l 0.75–1,25 g/l
Thielaviopsis
fenhexamid (50%)
pentachloronitrobenzene (75%)
azoxystrobin (50%)
0.15 g/l
Pythium
pyraclostrobin (12.8%) + boscalid (25.2%)
0.03–0.07 g/l pyraclostrobin or/and 0.05–0.15 g/l boscalid
+
propamocarb (600 g/l) azoxystrobin (50%) fludioxonil (125 g/l)
1.8 g/l
0.15 g/l
+
0.05–0.07 g/l
Rhizoctonia
chlorothalonil (72%) + thiophanate-methyl (18%)
0.75–1,25 g/l chlorothalonil or/and 0.18–0,27 g/l
pentachloronitrobenzene (75%) polyoxin D zinc salt (11.3%)
0.75–1,25 g/l
0.07 g/l
* Rotate active ingredients (AI). Don’t apply the same AI more than 3 times at row. Check phytotoxicity!
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Phytophthora
Most common Catharanthus seedling diseases.
Disease
Active ingredients (rate in chemical)
Active Ingredient concentration in solution g/l*
Use as prophylactic
azoxystrobin (50%)
0.15 g/l
Phytophthora
pyraclostrobin (12.8%) + boscalid (25.2%)
0.03–0.07 g/l pyraclostrobin or/and 0.05–0.15 g/l boscalid
+
propamocarb (600 g/l)
1.8 g/l
mankozeb (640 g/kg) + mefenoxam (40 g/kg)
* Rotate active ingredients (AI). Don’t apply the same AI more than 3 times at row. Check phytotoxicity!
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Q&A session.
• Thank you for your time. • For more information, please contact your Key Account Manager.
Amjad.Iqbal@syngenta.com Key Account Manager SEAP (South East Asia & Pakistan) (Pakistan, Thailand, Vietnam, Indonesia, Malaysia, Singapore, Phillipines, Cambodja, etc
Ivan.Pozdnyakov@syngenta.com Technical Sales Specialist SA/SEAP
Gautam.Sangle@syngenta.com Key Account Manager SA (South Asia) (India, Nepal, Bangladesh)
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