PETRA
PETRA gives good results even by difficult conditions like drought and heat.
VARIETY DESCRIPTION
QUALITY
- cooking type B
- very good taste
- yellow flesh
- no discoloration after cooking
- starch content 12-13%
YIELD
- very high marketable yield
- good calibration
- large tuber size
RESISTANCE
- PCN: Ro 1
- wart disease: Pathotype 1
- Y-Virus: very high
- PLR: high
- early blight: very high
- late blight: high
- common scab: very high
TUBER
- oval-longoval
- very shallow eyes
- yellow flesh, smooth skin
PLANT
- strong erect stem
- white flower
- rapid foliage development
PLANTING
- suitable for all types of soil
- treatment against rhizoctona is recommended
- distance in row 28-32cm, 2cm deeper than average
FERTILIZATION
120-140 kg N/ha incl. N-min and N-org
Phosphorus 100kg/ha
Potassium min. 300 kg/ha
depending on yield
Magnesium 60-80kg
PLANT PROTECTION
- not sensitive to metribuzin
- routine protective control of late blight is recommended
HARVEST
- check skin set before harvesting
- avoid mechanical damage
STORAGE
PETRA is suitable for a long term storage
