Grampian Growers Ltd
Grampian Growers Ltd Grampian Growers Ltd

Gemson

Since its commercial release in 2007 Gemson has gone from strength to strength in the expanding baby potato sector. Gemson is renowned for producing exceptional small, white, round and bright tubers, perfect for the packing industry and of the same standard as current sector leader Maris Peer.

Gemson is comparable in every way with the widely known Maris Peer except in yield and tuber number where Gemson excels compared to its main rival. Trial and commercial field scale results have shown that Gemson can produce more than 60% greater yield in the desirable <45mm fraction while also demonstrating a smaller percentage of waste in the form of outgrades and oversize, producing consistently excellent results for both growers and packers of the variety.

The Superior Choice Baby Potato

History

Breeder:
SCRI
Market Outlet:
UK Babies, France, Scandinavia, North Africa, Middle East
Parentage:
SCRI.85.C.4d.8 x Maris Peer
Seed Area 2015
UK 140
Introduction:
2007

Key Variety Points

  • Very high tuber number variety with few in the oversize bracket
  • Average of 25 tubers per plant v's 16 of Maris Peer
  • Lower seed rates than main rival Maris Peer with a higher marketable yield
  • Very resistant to Blackleg
  • Good resistances to both common and powdery scab
  • Long natural dormancy

Contact

Telephone:
01674 832022 / 01674 832021
Email:
david.murdie@grampiangrowers.co.uk / 
 

Disease & Pest Resistance

  Gemson Peer
Leaf Roll 9 4
A-Virus - -
X-Virus - -
Y-Virus 4 3
Foliage Blight 4 4
Tuber Blight 2 4
Blackleg 8 4
Powdery Scab 7 6
Wart Disease I I
Potato Cyst Nematode Ro1 2 2
Potato Cyst Nematode Pa2,3 1 2
Common Scab 5 5
Dry Rot 3 -
Spraing - -
Other internal defects 8 -
Slugs - -
Black Scurf 6 -

Agronomic Characteristics

  Gemson Peer
Maturity 5 5
Skin Colour Y C
Flesh Colour 5 5
Tuber Shape 6 4
Eye Depth 7 6
Uniformity 6 6
Tuber Numbers 4 (11) 4 (10)
Freedom from outgrades 7 6
Yield 9 8
Dry Matter Content 6 4
Dry Matter % 20 17
Dormancy 6 5
Drought resistance 7 6
Damage 7 7
Bruising 7 5

Planting Details

Dual Purpose

Tuber Count Plant Pop t/ha t/ac 72" Beds (cm) 72" Beds (in)
400 57,531 7.19 2.91 19.3 7.6
500 59,583 5.96 2.41 18.6 7.3
600 61,787 5.15 2.08 18.0 7.1
700 64,160 4.58 1.86 17.3 6.8
800 66,723 4.17 1.69 16.7 6.6
900 69,496 3.86 1.56 16.0 6.3
1,000 72,515 3.63 1.47 15.3 6.0
1,100 75,806 3.45 1.40 14.7 5.8
1,200 79,409 3.31 1.34 14.0 5.5
1,300 83,372 3.21 1.30 13.3 5.2
1,400 87,752 3.13 1.27 12.7 5.0

Baby Production

Tuber Count Plant Pop t/ha t/ac 72" Beds (cm) 72" Beds (in)
400 63,285 7.91 3.20 17.6 6.9
500 65,542 6.55 2.65 17.0 6.7
600 67,966 5.66 2.29 16.3 6.4
700 70,576 5.04 2.04 15.7 6.2
800 73,395 4.59 1.86 15.1 6.0
900 76,448 4.25 1.72 14.5 5.7
1,000 79,767 3.99 1.61 13.9 5.5
1,100 83,386 3.79 1.53 13.3 5.2
1,200 87,350 3.64 1.47 12.7 5.0
1,300 91,709 3.53 1.43 12.1 4.8
1,400 96,527 3.45 1.40 11.5 4.5

Fertiliser Requirements Kgs/Ha

  Planting Top dressing Total
Nitrogen (N) 100-120 120
Phosphate (P2O5) 225 225 (Soil index 1 or L)
Potash (K2O) 160 160 (Soil index 1 or L)