1921.] 



REroRT ON Potato Trials, 1920. 



355 



Nithsdalc. 



Duke of Ninetyfold. Epicure. Arran 

 York. Comrade. 



Tons. Cwt. Tons. Cwt. Tons. Cwt. Tons. Cwt. Tons. Cwt. 



Average Yield in England, 



3i)0 Centres 10 8 1('> H U 1111 11 10 



Average Yield in Wales, 



05 Centres 8 12 10 1 10 1 — 11 1 



Avera<.^e Yield in England 



and Wales, 455 Centres... D 14 8 lH 8 IS 11 11 118 



Table giving Summary of Average Yields per acre for 

 England and Wales : — 







First Earlies. 







(a) Immunes. 





(b) Susc 



eptihles. 







Tons. 



cwt. 





Tons. 



cwt. 



Dargill Early ... 



7 



17 



Epicui'e ... 



1 1 



11 



k5no\V(hx)p 



7 



lii 



DuUe of Y(.rk ... 



8 



19 



Arran Rose 



7 



7 



Ninetyfold 



8 



18 



Average ... 



7 



13 



Average . . . 



:i 



k; 



Second Karlies. 





Late and Main Crop. 







Tons. 



cwt. 





Tons. 



cwt. 



Great iScott 



11 



13 



Kerr's Pink 



13 



2 



King George ... 



11 



9 



Majestic 



10 



7 



Arran Connade... 



11 



8 



Tinwald 







Xithsilale 



<) 



14 



Perfection 



10 











Golden Wonder... 



8 



7 









Favourite 





IS 



Average 



11 



1 



Average ... 





11 



From the table above it will be seen that so far as cropping 

 powers are concerned, the first early immunes have considerable 

 leeway to make up to equal the susceptible varieties which were 

 used as controls. The final average for the three fii-st early 

 immunes is 2 tons 3 cwt. per acre behind the average of the three 

 susceptibles, and Dargill Earhj, the highest cropping imnuuie, 

 is 3 tons 14 cwt. per acre behind Epicure, the highest cropping 

 susceptible. 



The second early varieties Great Scott, Kituj George and Arrau 

 Comrade are very consistent with regard to their relative yields 

 throughout the country. Arran Comrade has given heavy crops 

 in some districts exceeding those of Kerr's Pink, as in Brecon, 

 Carnarvon and Birmingham. Nithsdale, which is now regarded 

 as a second early, has generally given considerably lower yields. 

 It has, however, given heavy crops in the Nortlu^-n Counties, 

 tlu^ i\ridlands and in Wales. 



Of the maincrop and late varieties. Kerr^ P'uil- is at the top, 

 and h:is ,uivi>n th(^ hi^iviest avei'age county crop, viz., 21 tons 

 9 cwt. per acre in Leicestershire. Majestic is a good second, 

 with \\) tons 1 cwt. wvvv in Ih^'efoi'd . r. 2 



