Mirabella

CROP TIME

From planting to harvest: 20 weeks

From pruning: 18-19 weeks.

PLANTING DENSITY

6 Plants/m2 net. Plants are spaced in a quincunx pattern with 40 cms between plants.

PRE-PLANTING

Soil: Loose and well-drained soil, at least 25 cms deep.

pH: 5.5 to 6.5

Netting: 2-3 levels

EC: 0.8 to 1.2

PINCH

Pinch apex when plants have 8 pairs of leaves. Four days after pinch apply GA3 at 250 ppm. Do a  second GA3 8 days after the first application; apply a third application only to  plants with delayed growth.

PRUNING

Low approx. 2 to 3 cms (1 to 2 in). If no drip system is used, to prevent diseases it must be higher (at 5 cms). It is advised to seal with fungicides to protect from diseases.

THINING AFTER PRUNING

5 weeks after pruning, shoot selection must be completed leaving 12 to 15 uniform shoots for bouquet use and 8 to 10 for high end full bunches. After selection, apply GA3 at 250 ppm. Do a third application only to plants with delayed growth.

IRRIGATION

Use overhead irrigation for the first week after planting. Then, switch to drip irrigation. Keep the soil at field capacity during the establishment of the plant.  Apply 4-5 L/day/m2 (according to environmental conditions and soil type). Reduce irrigation at 20 – 25 % when the floral bud appears. One week before pruning, stop irrigation and restart 1 week after pruning increasing it gradually  as leaves appears.

HARVEST

When grown under greenhouse, harvest when 70 to 80% of the flowers are open.

When grown outside, harvest when 30% of the flowers are open followed by  5 to 7 days inside an opening chamber at a temperature of 76° F to 81°F and high relative humidity (50%-60%).  Clean scisors twice per bed with disinfecting solution (Timsen 2 g/L).

POST HARVEST TREATMENT

Harvest at 70% -80% flower opening

Immediately after harvest, hydrate stems in STS harvesting solution for 24 hours.

Harvesting Solution:  Chrysal  AVB: 1 ml/L; AVB Booster: 1 ml/L

Then hydrate in a Chrysal Profesional 2 solution at 6 ml/L for 12 hours in a cold room.

Harvest at 30% flower opening

Apply same harvesting solutions and conditions as above,  then place stems in a opening solution until desired floral opening  (50%-80%).

Openning Solution:  Chrysal OVB: 3 ml/L; AVB: 1 ml/L; Sugar: 30 g/L  Keep at thi soslution for 6 hours

Then hydrate in a Chrysal Profesional 3 solution at 10 ml/L and sugar: 50 gr/L

Replace the solution every 2 days. 

PESTS & DISEASES

•Leaf miner, Thrips, Powdery mildew, Mites