Variety Characteristics:
Developed by Caithness Potato Breeders, Harmony is a vigorous main crop variety with very high yield potential and superior storage characteristics. Numerous round oval, uniform, bright white fleshed tubers suited to table consumption are produced on each plant.

Unique disease resistance characteristics for Harmony includes: Resistance to golden nematode Ro1 and moderate resistance to pale cyst nematodes Pa2/3, common scab, bruising, Black leg and PVX. Harmony is susceptible to PVY and requires a standard North American management program for late blight.

Harmony is widely adapted and demonstrates best performance were crops can acquire sufficient moisture throughout the growing cycle.

 

Seed Preparation:
Cold seed should be warmed to 10-15°C (50-60°F) to minimize bruising during handling.  Pre-warming may be necessary depending on the planting date, as Harmony has a deep dormancy. Harmony can successfully be pre-cut. Optimum cut seed sizes are 50-gram (2 oz) or larger. 

 

Planting:
Harmony responds best when soil temperatures are at or above 7°C (45°F). Seed piece depth should be 5-8 cm (2-3") under most conditions in well drained soils.  Plant spacing of 22 cm (9") for cut seed and approximately 25 cm (10") for whole seed.

 

Cultivation:
Harmony requires a regular nitrogen fertilization.  A knowledge of field nitrogen will be helpful in determining levels of nitrogen to apply. Base Phosphorous and Potassium application levels on soil analysis data.  Herbicides containing metribuzin can be used; always follow label recommendations for soil type and conditions. Harmony gives good results on well drained soils. It will emerge quickly and develop a good ground covering foliage.

 

Harvest and Storage:
The variety has a determinate growth habit and has not demonstrated problems with vine destruction when grown with appropriate Nitrogen applications.  Harmony is not susceptible to internal bruising or to mechanical damage. It will store if properly handled, cured and ventilated. Apply a treatment of the fungicide thiabendazole to control fusarium and silver scurf. Avoid free moisture in storage and keep potatoes at a consistent temperature. Optimum storage and packing results can be realized over an extended table potato shipping season.

 

The above information is based on production experience in Atlantic Canada.  It is believed to be accurate, but performance may vary under different management or climatic conditions.

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