JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
MAINCROP POTATOS AT WISLEY, 1921. 
Eighty-five stocks of potatos were received at Wisley in 1921 for 
inclusion in the maincrop trial. Forty tubers of each were planted 
(except in a few cases of seedlings where not so many were available), 
in two lots of twenty, on April 21. One lot gave consistently higher 
yields than the other, but the relative differences in the yields of 
different stocks was, on the whole, maintained throughout. In the 
whole trial only five plants were found not true to name — a really 
remarkable instance of the improvement that has taken place in the 
roguing of varieties for seed purposes during the past few years. 
The season was remarkable for the small amount of rain falling 
during the growing season — less than inches between planting and 
lifting on October 14. It gave an opportunity of comparing the 
propensities of varieties for making the undesirable second growth 
which so greatly interferes with the keeping and cooking qualities of 
potatos. The amount made by the different varieties is commented 
upon below. It also enabled a comparison to be made between the 
capacity the different varieties had for withstanding adverse condi- 
tions, for by August 13, while most varieties were quite green and 
looked well, 'Drummond Castle,' 'Crusader,' 'Evergood' (albeit, 
unlike the others, from English seed), 'Gordon Castle,' ' Braemar 
Castle,' and ' Templar ' were all showing signs of distress. 
Some varieties, like 'Majestic' and 'Arran Comrade' and 'Ally,' 
which were planted in the second-early trials of 1920 (see vol. 46, p. 390), 
were planted again, and enabled comparison to be made between these 
and later maincrop varieties. 
The yields given represent the totals from forty plants, and in 
comparing them the source of the seed must be taken into account. 
There was no attack of Phytophthora. 
The Committee inspected them on several occasions, and final 
judgment was given on October 14, when they were cooked. In 
making awards the Committee took into consideration their cooking 
quality, cropping, freedom from second growth, shallowness of eyes, 
as well as other characteristics. The awards made were as follows : 
Award of Merit : 
'Majestic,' sent by Messrs. Holmes, Barr, Dobbie, and Veitch, 
raised and introduced by Mr. Findlay. 
'Up to Date ' (and synonymous stocks, see below), sent by Messrs. 
Barr, raised by Mr. Findlay. 
'Kerr's Pink,' sent by Messrs. Veitch, Clucas, Farmer & Back- 
house, Dobbie, Barr, and Bath, raised by Mr. Henry, introduced by 
Messrs. Dobbie. 
