BIGROSSA
BIGROSSA has great potential in markets where large red skinned tubers are preferred.
VARIETY DESCRIPTION
QUALITY
- cooking type B, excellent taste, low discoloration after cooking
- very low tendency for internal defects
- medium early maturity
- starch content 13-14%
YIELD
- very large variety
- medium tuber set
- uniform caliber
- very high yield potential
RESISTANCES
- PCN: Ro 1, 3, 4, 5
- Y-Virus (PVY): high
- potato leafroll virus (PLRV): high
- Late blight: high
- black leg: high
- common scab: medium – high
TUBER
- oval-longoval shape
- smooth red skin
- shallow eyes
- yellow flesh
PLANT
strong erect stem type, white flower
FERTILIZATION
- Bigrossa has a high Nitrogen efficiancy, so N-fertilization should be reduced (120-130kg N/ha)
- phosphorus 100kg
- potassium 250-300kg/ha
- magnesium 60-80kg/ha
PLANTING
- very high adaptability to different kind of soils and climatic conditions
- seed tubers of BIG ROSSA should be pre-sprouted before planting
- chemical control against Rhizoctonia solani is recommended
- BIG ROSSA should be planted in a well-prepared seedbed a bit deeper than average, with 30-32 cm distance between plants in a 75 cm row
- planting in wet cold soils reduces tuber set
- planting by All-in-one system should be done a bit later
PLANT PROTECTION
- not sensitive to Metribuzin,
- routine chemical control of late blight combined with ingredients against early blight
- beginning of chemical haulm killing not to early
HARVEST / STORAGE
- check skin set before harvest (can take more time depending on N supplied)
- avoid mechanical damage
- Bigrossa has a good storability due to a good dormancy
