Potomac series also comes with the early Potomac series - with all the same virtues, the early varieties are a type 3 for all but the warmest periods where other varieties should be used
Orange, Rose, Pink, White, Yellow
From planting to harvest: 10 weeks
100 -150 cm
90 plants/m2 net
Soil: Well surfaced, loose soil with no clusters; at least 25 cm (10 in.) deep.
PH: 5.5 to 6.5
Netting: 2 levels
Snapdragons are grouped based on the response of the varieties to night time temperatures, light intensity and day length.
• Group 1: Night -45-50oF (7-10oC), Day – 50- 55oF (10-13oC).
• Group 2: Night -50-55oF (10-13oC), Day – 55- 60oF (13-16oC).
• Group 3: Night -55-60oF (13-16oC), Day – 60- 65oF (16-18oC).
• Group 4: Night temperature above 60oF (>16oC), Day >65oF (>18oC).
Generally, the lower temperatures in the range gives the best quality, but at the expense of a longer crop time.
• Group 1: low light night 1,000 to 1,500 foot candles.
• Group 2: moderate light 1,500 to 3,000 foot candles.
• Group 3: moderate to high light 2,500 to 4,500 foot candles.
• Group 4: high light 3,000 to 5,000 foot candles.
IRRIGATION & FERTILIZATON
Begin with overhead irrigation, then switch to drip irrigation one (1) week after transplant. Volume from 4 to 5 L/day/m2..
Excessive side shoots are an indication of high moisture or inappropriate fertilization levels. A general fertilization formula can be:
N: 80 ppm
P: 40 ppm
K: 160 ppm
Ca: 120 ppm
Mg: 60 ppm
S: 50 ppm
Fe: 2 ppm
Mn: 2.5 ppm
Cu, Zn y B: 0.2 ppm.
Harvest when 3 - 6 flowers are opened.
POST HARVEST TREATMENT
Hydrate in AVB solution (0.5 cm3 / Lt of Water) and AVB Booster (1 cm3 / Lt) for two hours. Subsequently hydrate in Chrysal Professional 2 at a dose of 10 cm3 / Lt for 4 hours
Snapdragons should be stored and shipped upright to prevent curvature of the spikes.
PESTS & DISEASES