REPORT OF MR. J. A. CLARK 



303 



StSSIONAI, PAPER No. 16 



CLUB-ROOT OF TURNIPS. 



Second Sowing of Swedes. 



Eleven varieties of Swede turnips were sown June 8 on land which had been in 

 potatoes the previous year. Some improved Island-grown seed was obtained and sown 

 with the other ten varieties mentioned. 



The soil proved to be infected with the ' Fingers and Toes ' disease, known as 

 ' Club-root of Turnip.' 



A row 200 feet long, in which there should have been 200 turnip plants, of each 

 variety, was measured and on November 9 a count was taken of the actual number of 

 turnips which had survived, the number which were affected but still growing, and the 

 number of sound turnips which had resisted the disease. A number of the sound 

 specimens of each variety were selected and labelled. They will be kept and seed 

 grown from them during 1911. 



The following are the results obtained: — 



V 



a 



3 



1 



2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 



Name of Variety. 



Turnips 

 Living, 

 Nov. 9. 



Bangholm Selected . . . 



Carter's Elephant 



Good Luck 



Halewood's Bronze To] 



Hall's Westbury 



Hartley's Bronze 



Jumbo. 



Magnum Bonum 



Mammoth Clyde 



Perfection Swede 



Island Seed 



71 

 48 

 93 

 41 

 6 

 60 

 36 

 147 

 68 

 59 

 64 



Number 



Sound 



Turnips, 



Nov. 9. 



13 



3 



53 



23 



22 



90 

 6 

 3 

 2 



Number 



of Rotten 



Turnips 



still Living, 



Nov. 9. 



58 

 45 

 40 

 18 

 6 

 38 

 36 

 57 

 62 

 56 

 62 



Per cent 



< f sound 



Turnips out 



of 



possible 



200. 



65 

 15 



26 5 

 11-5 



11- 



45' 

 6 



15 

 1- 



Per cent 

 Diseased. 



93 

 98 

 73 

 88 



100 

 89 



100 

 55 

 97 

 98 

 99 



EXPERIMENTS WITH MANGELS. 



Eight varieties of mangels were sown on May 28 on a fallowed sandy loam, pre- 

 pared in the same way as the turnip ground. The seed was sown in drills thirty inches 

 apart and the young plants thinned to about twelve inches in the rows. Yields were 

 computed from the product of two rows, each sixty-six feet long. The roots were 

 pulled October 15. 



• Mangels. — Test of Varieties. 



V 



-3 



3 



Name of Variety. 



Yellow Intermediate 



Selected Yellow Globe 



Half Sugar White 



Giant Yellow Globe 



Gate Post 



Giant Yellow Intermediate. . . . 



Prize Mammoth Long Red 



Perfection Mammoth Long Red 



Yiell per Acre. 

 1st Sowing. 



Tons. 



33 

 33 

 30 

 30 

 29 

 28 

 28 

 26 



Lbs. 



1,930 



1,518 



1,809 



1,256 



1-38 



150 



1,287 



816 



Yield per Acre. 

 1st Sowing. 



Bush. 



1,132 



1,125 



1,(30 



1,020 



968 



935 



888 



8?0 



Lbs. 



10 

 18 



9 

 56 

 58 

 50 



7 

 16 



