370 
The  Wohurn  Field  Experiments,  1909. 
Rotation  Experiments  (Stackyari)  Field),  1909, 
The  arrangement  of  these  experiments  continued  as  pre- 
viously. On  the  upper  half  the  decorticated  cotton  cake  and 
maize  meal  (the  manorial  values  of  -which  during  a rotation 
are  being  compared)  -were  respectively  fed  to  sheep  when 
eating  off  the  swedes  grown  on  the  land,  while,  on  the  lower 
half,  the  cake  and  meal  respectively  were  given  to  bullocks 
making  manure  in  the  feeding  boxes,  the  dung  being 
subsequently  applied  as  a dressing  for  the  swede  crop. 
The  position  in  1909,  as  regards  the  several  rotations  (of 
which  there  are  four  distinct  ones),  was — 
UPPER  HALF  (Sheep  feeding-off  Roots). 
Rotation  I.  Crop  in  1909.  Swedes,  being  the  fourth  crop  since  the  com- 
mencement of  the  new  plan. 
„ II.  ,,  „ Mustard,  being  the  second  crop  since  the  com- 
mencement of  the  new  plan. 
,,  III.  ,,  „ Wheat,  being  the  third  crop  since  the  commence- 
ment of  the  new  plan. 
,,  IV.  ,,  ,,  Barley,  being  the  fifth  crop  since  the  commence- 
ment of  the  new  plan,  and  the  first  of  a new 
rotation  course. 
LOWER  HALF  (Dung  made  by  Bullocks  and  applied  to 
Swede  Crop). 
Rotation  I.  Crop  in  1909.  Swedes,  being  the  first  crop  of  the  new  rotation 
plan. 
„ II.  ,,  ,,  Mustard,  being  the  third  crop  of  the  new  rotation 
plan. 
„ III.  ,,  ,,  Wheat  (new  rotation  plan  not  yet  begun). 
„ IV.  „ „ Barley,  being  the  second  crop  of  the  new  rotation 
plan. 
It  may  be  well  to  repeat  here  that  the  object  of  the 
experiment  is  to  ascertain,  by  the  two  systems  of  (a)  feeding 
cake  or  corn  on  the  land  to  sheep,  (6)  manuring  the  swede 
crop  with  dung  made  at  home  by  bullocks  consuming  cake  or 
corn  respectively,  what  the  difference  of  manorial  value  is 
between  the  cake  (decorticated  cotton  cake)  and  corn  (maize 
meal)  as  tested  by  the  crops  actually  grown  in  the  course 
of  a four  years’  rotation. 
It  will  be  seen  that,  in  1909,  on  the  upper  half  (sheep- 
feeding) the  first  rotation  course  came  to  a close  on  Rotation  I., 
that  Rotation  IV.  concluded  this  in  1908,  but  that  on  Rotations 
II.  and  III.  the  course  is  not  yet  completed.  On  the  lower 
half  (dung  applied  to  swede  crop)  in  no  case  was  the  first 
rotation  course  concluded  by  the  year  1909. 
Rotation  I.  1909,  Swedes — after  Wheat  (1908). 
There  was  so  much  spurry  left  on  the  land  after  the 
removal  of  the  wheat  crop  that  it  was  decided  to  lime  this 
