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
- wart disease: 1
- PCN: Ro 1
- Y-Virus: very good
- PLR: good
- early blight: very good
- late blight: good
- common scab: very good
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 28-32 cm, 2 cm 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
- PETRA is suitable for a long term storage
