328  The  Woburn  Field  Experiments , 1910. 
of  2 tons  of  lime  per  acre  in  1905  did  little  more  than  increase 
the  straw.  As  between  the  inclusion  of  phosphate  and  potash 
respectively  in  a mixed  manuring,  the  results  again  showed  in 
favour  of  the  potash  (plots  10a,  11a). 
The  corn  was  valued  on  January  4,  1911,  and  was,  speaking 
generally,  in  better  condition  and  better  harvested  than  the 
wheat.  Several  plots  yielded  quite  useful  barleys,  the  best 
being  the  nitrate  of  soda  plots  with  minerals  (plots  6 and  9a). 
The  unmanured  produce  was  of  poor  quality,  as  was  also  that 
from  farmyard  manure  and  from  rape  dust.  Bigness  of  berry 
marked  a number  of  the  samples  this  season.  The  valuation 
was  taken  on  a basis  of  28s.  per  quarter  of  448  lb. 
Rotation  Experiments  (Stackyard  Field),  1910. 
Rotation  I.  1910,  Barley — after  Swedes. 
On  the  upper  half  (sheep-feeding),  6^  tons  to  11  tons  per 
acre  of  swedes  had  been  grown  in  1909  ; this  quantity  was 
supplemented  to  make  12  tons  of  roots  per  acre,  and  feeding 
off  with  sheep  commenced  on  January  19,  1910,  the  sheep 
having,  in  addition  to  the  swedes  and  a little  clover  hay, 
decorticated  cotton  cake  on  plot  1,  maize  meal  on  plot  2,  but 
no  cake  or  corn  on  plots  3 and  4.  The  quantity  of  additional 
cake  and  corn  was  920  lb.  per  acre,  or  about  £ lb.  per  head 
daily. 
On  the  lower  half  (bullock-feeding),  sheep  fed  off  the 
roots  (at  the  rate  of  12  tons  per  acre)  merely  with  a little 
clover  hay  chaff. 
Ploughing  of  the  land  was  finished,  after  the  sheep-feeding, 
by  March  16,  and  on  March  23,  9 pecks  per  acre  of  “ Gold- 
thorpe  ” barley  were  drilled.  The  crop  came  up  well  and 
formed  a great  contrast  to  the  adjoining  continuous  barley 
plots.  There  were  no  very  marked  differences  between  the 
plots,  plot  1 looking,  perhaps,  rather  the  best.  The  crop  was 
cut  August  23-27,  carted  and  stacked  September  5,  and  threshed 
October  27.  The  results  are  given  in  Table  III.,  p.  329. 
On  the  upper  half  the  decorticated  cotton  plot,  as  the 
appearances  indicated,  gave  the  highest  yield,  viz.,  47-7  bushels, 
but  it  was  not  much  in  excess  of  the  other  plots  ; the  yield 
from  the  maize  meal  plot  (2),  however,  was  the  lowest  of  the 
four,  though  the  reason  for  this  is  not  apparent.  The  crop 
generally  was  higher  than  the  barley  crop  of  1909,  which 
itself  was  in  advance  of  that  of  1908. 
On  the  lower  half  there  was  no  difference  between  the 
decorticated  cotton  cake  dung  plot  and  the  maize  meal  dung 
plot,  but  both  were  4 to  5 bushels  ahead  of  the  plots  where 
cake  and  corn  had  not  been  used  in  making  the  dung. 
