354 Eeport on Potato Trials, 1920! [July, 



therefore, that the more numerous the number of similar experi- 

 ments the more convincing are the results. 



It is true that results obtained at any one station or from 

 several stations in any one County, might be unconvincing or 

 even misleading; but some reliance can surely be placed on the 

 I'esults from carrying similar experiments out at 455 stations 

 situated through England and Wales. 



A review of the yields of each variety averaged for all the 

 centres, shows at once how consistently and well the variety 

 Kerrs Pink cropped, yielding the highest crop in 26 out of 35 

 English Counties carrying out trials. Majestic gave the largest 

 yield in Essex, Hereford and Kent; Arran Comrade in Bucks, 

 Lincolnshire (Lindsey), and Norfolk; Great Scott in Durham; 

 King George in Cheshire, and Epicure in Berks. In Wales 

 Kerr's Pink again did Vv^ell, giving the largest yield in 4 Counties 

 (Eadnor, Monmouth, Montgomery and Anglesey) ; Arran Comrade 

 in 3 Counties (Brecon, Cardigan and Carnarvon) ; Great Scott in 

 2 Counties (Carmarthen and Pembroke), and Majestic in Den- 

 bigh and Flint. 



From the results summarised for the whole country, as shown 

 below, it was found that the average yield of second early 

 and maincrop varieties in these trials was 10 tons 6 cwt. per 

 acre. This figure is greatly in excess of that for the estimated 

 average yield of potatoes for the whole of England and Wales in 

 1920 (5 tons 16 cwt. per acre), and from this fact it would ap- 

 pear that provided better seed is used and the land adequately 

 cultivated and manured, there is no reason why the yield per 

 acre for the whole country should not be materially increased. 



The following figures show the Average Yield oi each 

 Variety for all Centres : — 





Snowdrop. 



Dareill 

 Early. 



Oreat 

 Prott. 



Majestic. 



Kerr's 

 Pink. 



Averasre Yield in England. 

 390 Centres 



Tons. Cwt. 

 8 3 



Tons. Cwt. 

 8 



Tons. Cwt. 



12 2 



Tons Cwt. 



10 12 



Tons. Cwt. 



13 12 



Average Yield in Wales, 

 65 Centres 



6 13 



7 7 



10 2 



9 11 



11 8 



Average Yield in England 

 and Wales, 455 Centres... 



7 16 



7 17 



11 13 



10 7 



13 2 





O old en 

 Wonder. 



Tinwald 

 Perfoction. 



Favourite. 



Arran 

 Rose. 



King 

 George. 



Average Yield in England. 

 390 Centres 



Tons. Cwt. 

 8 9 



Tons. Cwt. 



10 6 



Tons. Cwt. 

 5 18 



Tons. Cwt. 



7 9 



Tons. Cwt. 



11 10 



Average Yield in Wales, 

 65 Centres 



8 1 



8 18 



5 17 



7 1 



11 5 



Average Yield in England 

 and Wales, 455 Centres... 



8 7 



10 



5 18 



7 7 



11 9 



