68 EXPERIMENTS UPON WHEAT 



(Red) appears to be the wheat now grown as Square Head's 

 Master, Teverson, etc., just as Club wheat is the original form 

 of the wheat now generally known as Square Head. These 

 two wheats are perhaps the most generally grown of any 

 at the present time. Golden Drop is an old wheat of fair 

 quality, still very generally grown. Bole's Prolific is no longer 

 grown as such, but may represent the wheat now known as- 

 Pilgrim's Prolific and Red Giant, not uncommon in the South 

 Midlands. 



Practical Conclusions 



1. The results obtained on the rotation field show that 

 wheat, with its deeply-rooting habit and its long period of 

 growth, is in less need of direct manm'ing than most crops of 

 the farm. If the land is in good heart it can usually be grown 

 with the residues in the soil, especially if it follows a clover 

 crop. 



2. Whenever manure is needed it should be mainly nitro- 

 genous, and nitrate of soda generally answers better for wheat 

 than sulphate of ammonia. After a wet autumn and winter 

 a top-dressing of nitrate of soda, 1 to 1^ cwt. per acre, will be- 

 found particularly valuable. 



3. When wheat is grown two or three times in succession,, 

 about 1 cwt. per acre of some slow-acting nitrogenous manure- 

 and 2 cwt. of superphosphate, should be ploughed before- 

 seeding, and a top-dressing of 1 to 2 cwt. per acre of nitrate 

 of soda should be applied in February. Only on the lightest 

 sandy and gravelly soils will any return be obtained for the- 

 use of kainit and other potash salts with wheat. 



References 



" Report of Experiments on the Growth of Wheat for Twenty Years in' 

 succession on the same Land." Join: Roy. Ag. Soc, 25 (1864), 93 and 

 449. Rothamsted Memoirs, Vol. III., No. 4. 



"Our Climate and our Wheat Crops." Jour. Roy. Ag. Soc, 41 (1880), 173. 

 Eothmnsted Memoirs, Vol V., No. 11. 



'^ On the Composition of the Ash of Wheat Grain and Wheat Straw, grown. 



