DORETT
DORETT offers a good marketable yield, excellent nematode resistances and is due to its mealy cooking type an enrichment to the market.
VARIETY DESCRIPTION
QUALITY
- cooking type BC, good taste
- no discoloration after cooking
- suitable for prepacking
- low sensitivity to mechanical damage and internal defects
- starch content 13-14%
YIELD
- high number of tubers with uniform size
- high marketable yield
RESISTANCES
- PCN: Ro 1,2/3,5 (7); Pa2,3 (8)
- potato wart disease: 1
- Y-virus (PVY): very high
- potato leaf roll virus (PLRV): medium
- late blight: medium
- common scab: medium
TUBER
roundoval; yellow netted skin, shallow eyes, yellow flesh
PLANT
White flowers, rapid development and foliage cover erect stem.
PLANTING
- Avoid sandy soils with problems caused by common scab
- DORETT should be planted with 30 – 32 cm distance (in 75 cm rows) in a well-prepared seedbed
- protective chemical control against Rhizoctonia solani
- late tuberization
FERTILISATION
- up to 120 kg N/ha
- phosphorus 100kg
- potassium 250-300kg/ha (preferably sulphate)
- sufficient magnesium 80kg/ha.
- In dry years foliage application with micronutrients.
PLANT PROTECTION
Not sensitive to application of Metribuzin routine chemical control of late blight together with active ingredients against early blight is recommended.
HARVEST/STORAGE
- 2-3 weeks after haulm killing skin set is finished
- good dormancy and storability