On the Growth of Barley hy different Manures, Sfc. 505 



The figures in Table XIV. deserve a careful examination by tbe 

 reader. Our space will only allow us to call special attention 

 to one or two points of prominent interest. To aid us in this, we 

 subjoin in Table XV., !2:iven below, a summary statement of the 

 produce of barley obtained where the turnips were carted off in 

 the unmanured rotation, by the side, when at command, of the 

 unmanured produce, in the same years, in the other two fields: — 



Table XV. 



HISTORY OF THE LAND. 



Produce of Barley, 

 Unmanured. 



Dressed Com per Acre, in Bushels and Pecks. 



Agdell-Field— In four-course Tiotation after Turnips Unmanured and Carted olT 



Hoos-Field — In continuous Barley Series 



Barn-Field — After 10 crops of Turnips Carted off (8 Unmanured) 



Total Com ycr Acre, lbs. 



Agdell-Field — In four-course Kotation after Turnips Unmanured and Carted off 



Hoos-Kield —In oontinuous Barley Series 



Barn- Field — After 10 crops of Turnips Carted off (8 L'nmanured; 



Total Straw per Acre, lbs. 



Agdell-Field— In four-course Rotation after Turnips Unmanured and Carted off 



Hoos-Field — In continuous Barley Series 



Bao-n-Field — After 10 crops of Turnips Carted off (8 Unmanured) 



Total Produce (Com and Straw) per Acre, lbs. 



Agdell-Field — In four-course Rotation after Turnips Unmanured and Carted off 



Hoos-Field —In continuous Barley Series 



Barn-Field — After 10 crops of Turnips Carted off (8 Unmanured) 



hsh. pk. bsh. pk. bsh. pk. 

 45 Oi j 33 1 46 Ui 

 26 3 30 U 

 20 Oi 



1947 

 1547 

 1149 



2592 



1679 



5057 



Tlie first point of observation brought prominently to light by 

 this summary Table is, that the produce of barley obtained in 

 rotation, even when the turnips were both unmanured and carted 

 off, was considerably greater than when the crop was grown 

 annually in succession on the same land. This too was even 

 more strikingly the case in the third unmanured course than 

 previously. It has been already seen that the barley obtained 

 continuously in succession, was, on the other hand, considerably 

 more than tliat after a series of unmanured turnip crops. 



Bearing in mind the point last mentioned, and now referring 

 to Table XIV., it is interesting to observe, that in each of the 

 three seasons of barley in rotation, the produce was considerably 

 iess after the carted-off turnips grown by superphosphate of lime, 

 than after those without any manure whatever. After what has 

 already been gathered of the nitrogen-exhausting characters of the 



