10 Aug., 1916.] hxpei-i inputs in the C'u/fivatioii of Potatoes. 



465 



the plants: — 1. Before the crop was ripe, and, 2, after the crop had 

 ripened. Both classes of seed were subjected to the same cultural treat- 

 ment and were planted side by side. 



The weights recorded in each casei are tabulated below : — 



Immature and Kipe Seed Test. 



Variety. 



Sutton's 

 Factors 



White Elephant 

 Carman I. . . 

 Early Norther 

 Black Prince 

 Gold Coin . . 







(i 5 



11 14 10 3 94 



7 4 89, 4 80 



3 17 86: 2 17 16 



6 12 103 4 8 64 



It will be seen that there is a marked increase in favour of im- 

 mature seed. 



The increases vary from 1 ton per acre in the case of the " Factor " 

 variety, to 3 tons 4 cwt. in the case of Carman I., hut the increase is 

 constant through all th« varieties. 



The accompanying table shows the relative cash returns per acr© of 

 the crops grown from immature and ripe seed: — 



Cash Value of Crop Per Acre at £5 Per Ton. 



Variety. 



Sutton's 

 Factors 



White Elephant 

 Carman I. . . 

 Early Norther 

 Black Prince 

 Gold Coin . . 



Increase, due 



to Immature 



Seed. 



The smallest increase in value per acre is <£5, and the greatest £16, 

 both being appreciable. The average of the seven varieties in vield per 

 acre and money value of crop is given herewith. 



Average Returns of Seven Tests of Immature and Ripe Seed. 



tons cwt. 11)8. 

 1 14 64 



At £5 per ton 



£ .t 

 33 18 



£ 

 25 



£ a. d. 

 8 13 



