Variety Catalog – Irga
Characteristics and Description of the Variety
BASE DATA
| Variety Name: | Irga |
| Earliness: ⚠ | medium early |
| Utility type: | edible |
ORIGIN
| Origin: | D 2051 x Pamir |
| Country of origin: | Poland |
| Year of registration in Poland: | 1987 |
| Year removed from the registry: | |
| Breeder: | PMHZ Strzekęcin |
| Agent maintaining the variety in Poland: | Pomorsko Mazurska Hodowla Ziemniaka sp. z o.o. |
COMPOSITION (CONTENT)
| Starch content [%]: | 12.8 |
| Dry matter content [%]: | 20.9 |
| Vitamin C content [mg%]: | 20.3 |
| Glycoalkaloids content [mg/kg d.m.]: | 54.0 |
| Solanine content in tubers [%]: |
STORAGE
| Storage durability: ⚠ | 2 |
| Recommended storage temperature for seed potatoes [°C]: | |
| Recommended storage temperature for edible/processing potatoes [°C]: | 4 |
| Rest period for tubers: ⚠ | 8 |
TUBERS
| Tuber shape: ⚠ | round-oval |
| Shape regularity: ⚠ | 7.0 |
| Depth of eyes: ⚠ | 6.0 |
| Tuber size: ⚠ | 7.0 |
| Skin color: | light pink |
| Skin smoothness: | smooth |
| Flesh color: | creamy |
| Color of light sprouts: | red-purple |
FLOWERS
| Flower color: | white |
| Flowering abundance: ⚠ | 3 |
| Anther color: | yellow-orange |
| Style length: | short |
PLANT
| Plant height: | low – medium |
| Stem thickness: ⚠ | |
| Plant growth type: | intermediate – leafy |
TASTE
| Culinary type: ⚠ | B |
| Taste: | good |
| Taste [1-9]: ⚠ | 6.5 |
FLESH DARKENING
| Raw after 4 hours: ⚠ | 7.5 |
| Cooked after 10 min.: ⚠ | 8.0 |
| Cooked after 24 hours: ⚠ | 8.0 |
USAGE FOR
| French fries: | |
| Suitability for fries – index: | |
| Chips: | |
| Suitability for chips – index: | |
| Dried products: | Yes |
| Canned and frozen products: | Yes |
| Salads: | |
| Puree, dumplings, pancakes, noodles: |
PRONE TO
| Dark pressure spotting: ⚠ | 5 |
| Tuber deformation: ⚠ | 3.5 |
| Tuber cracking: ⚠ | 4 |
| Rusty flesh spotting: ⚠ | 3 |
| Black dot disease: ⚠ | 3 |
POTATO CYST NEMATODE
| Resistance to pathotypes: | Ro1, Ro4 |
POTATO SCAB
| Resistance to pathotypes: | D1 |
VIRUSES
| Virus Y – PVY: ⚠ | 7 |
| Reaction on tubers after PVYNTN infection: | |
| Leafroll virus – PLRV: ⚠ | 8 |
| Virus M – PVM: | moderately resistant |
| Virus M – PVM [1-9]: ⚠ | 5.0 |
| Virus X – PVX: ⚠ |
POTATO BLIGHT
| Leaf resistance to potato blight: ⚠ | 2.0 |
| Tuber resistance to potato blight: ⚠ | 4.0 |
ROTTENNESS
| Tuber resistance to dry rot: ⚠ | 5.0 |
| Tuber resistance to wet rot: ⚠ | 4.0 |
OTHER DISEASES
| Tuber resistance to mechanical damage: ⚠ | 5 |
| Plant resistance to black leg: ⚠ | 5.5 |
| Tuber resistance to common scab: ⚠ | 6.0 |
| Tendency of tubers to be infected with silver scab: ⚠ | 5.0 |
| Tendency to tuber cracking: |
OVERALL YIELD
| After 60 days from planting [dt/ha]: | |
| After 75 days from planting [dt/ha]: | |
| At the end of vegetation [dt/ha]: | 442 |
MARKETABLE YIELD
| After 60 days from planting [dt/ha]: | |
| After 75 days from planting [dt/ha]: | |
| At the end of vegetation [dt/ha]: | 392 |
MARKETABLE YIELD AS A PERCENTAGE OF OVERALL YIELD
| After 60 days from planting [%]: | |
| After 75 days from planting [%]: | |
| At the end of vegetation [%]: | 89 |
FERTILIZATION
| Recommended nitrogen dose for early harvest [kg N/ha]: | |
| Recommended nitrogen dose for harvest at the end of vegetation [kg N/ha]: | 140 |
REQUIREMENTS
| Soil: | medium-large |
| Water: | high |
ADDITIONAL INFORMATION
| Degree of difficulty in seed production: | fairly easy |
| Number of tubers per bush [pcs]: | 16.0 |
| Number of stems [pcs/tuber 20g]: |
Gallery
Variety Irga – tubers
(photo by S. Wróbel)
