214  Report  on  the  Field  arid  Feeding  Experiments  at  Woburn. 
much  as  in  the  preceding  season,  and  18  cwts.  1 qr.  and  25  lbs. 
of  straw. 
Again,  whilst  in  1881  plot  2,  manured  with  salts  of  ammonia 
without  any  minerals,  yielded  nearly  32  bushels  of  dressed  corn, 
and  only  20  cwts.  3 qrs.  and  24  lbs.  of  straw  and  chaff,  the 
same  plot  in  1882  produced  the  same  quantity,  that  is,  32  bushels 
of  dressed  wheat,  and  as  much  as  31  cwts.  2 qrs.  and  20  lbs.  of 
straw  and  chaff — or  nearly  one-half  more  than  in  1881. 
On  comparing  the  relative  proportions  of  grain  and  straw  on 
plot  5 (manured  with  minerals  and  salts  of  ammonia)  in  1881 
and  1882, 1 find  that  with  39T  bushels  of  dressed  corn,  30  cwts. 
and  13  lbs.  of  straw  were  grown  in  1881  ; whereas  last  year,, 
with  35-1  bushels  of  corn,  37  cwts.  3 qrs.  and  8 lbs.  of  straw, 
or  about  cwts.  more  straw,  were  produced  on  the  same  plot. 
The  differences  in  this  respect  are  specially  marked  on  the 
plots  which  were  manured  with  nitrate  of  soda,  with  or  without 
minerals. 
Thus  nitrate  of  soda  alone  in  1882  produced  26  bushels  of 
dressed  wheat,  and  the  great  quantity  of  32  cwts.  and  22  lbs. 
of  straw;  whilst  in  1881,  only  27  cwts.  2 qrs.  and  20  lbs.  of 
straw,  and  as  much  as  41  bushels  of  dressed  wheat,  were  grown 
on  the  same  plot. 
On  comparing  the  yield  of  corn  and  straw  on  plot  6 (manured 
with  minerals  and  nitrate  of  soda  in  1881  and  1882),  I find  that 
in  the  former  year  the  plot  yielded  only  36  cwts.  3 qrs.  and 
19  lbs.  of  straw,  and  45-2  bushels  of  dressed  wheat  per  acre; 
whereas  last  season  the  same  plot  produced  only  32’8  bushels 
of  dressed  corn,  and  as  much  as  39  cw  ts.  and  21  lbs.  of  straw', 
or  several  cwts.  more  straw  than  was  obtained  with  the  larger 
produce  of  dressed  wheat  in  1881. 
Without  a single  exception,  all  the  plots  last  season  yielded 
much  more  straw  in  proportion  to  corn  than  in  the  preceding 
season.  Comparing  the  plots  upon  which  nitrate  of  soda  was 
used  with  those  dressed  with  salts  of  ammonia,  the  proportions 
of  straw  were  greater  on  the  nitrated  plots  than  on  those 
manured  with  salts  of  ammonia,  and  the  amount  of  dressed 
wheat  was  greater  on  the  latter  than  on  the  plots  manured  with 
nitrate  of  soda. 
Altogether,  nitrate  of  soda  had  a less  favourable  effect  upon 
the  wheat-crop  of  1882  than  salts  of  ammonia,  either  alone  or 
in  conjunction  w ith  mineral  manures. 
In  1881,  on  the  contrary,  nitrate  of  soda,  either  alone  or  in 
conjunction  with  mineral  manures,  gave  better  returns  than, 
salts  of  ammonia  alone,  and  than  minerals  and  ammonia-salts. 
If  I am  not  mistaken,  nitrate  of  soda,  when  applied  in  consider- 
able quantities  to  wheat  in  a wet  and  cold  season,  does  not 
