104 Evperimcnfs with dlfferrat Top-Dre.<tsiiif/s upon Wheat. 
cn-t. qrs. lbs. 
Corn, Head 5 3 21 
„ Tail 0 0 ^ 
5 3 2oi 
Straw 7 2 21 
Chaff 0 1 16i 
Cavings 01 7 
Produce per acre : — 
Corn (head and tail) A\ bushels 38 11«., at CO lbs. per bushel. 
Straw (iucludiug cluiH' and cavings) 1 ton 13 cwt. 1 qr. 10 lbs. 
Nitrate of soda alone, in this experiment, gave almost exactly 
the same produce in corn and rather more straw than the same 
quantity ot nitrate mixed with twice its weight of salt. 
Tlie wheat on all the plots to which nitrate of soda was applied 
looked remarkably well, and for the first three months liad a 
lirighter green colour than the wheat on the guano plots. 
Plot \ . — Unmanured, produced : — 
cwt. qrs. lbs. 
Corn, Head.. .. ... .. .. 3 3 13 
„ Tail 0 0 2\ ■ 
3 3 \Uh 
Straw 4 3 2 
Chaff 0 1 1^ 
Cavings 0 0 22 
Produce per acre : — 
Cora (head and tail) 29 bushels 2 lb.'!. 
Straw (including chaff and cav ings) 1 ton 3 qrs. 18 Ib.s. 
The difference in the appearance of the wheat on the un- 
manured plot and tliat on the four preceding plots was very 
marked throughout the whole 'season. At harvest time the 
wheat on the unmanured plot was several inches shorter in straw, 
nor were the ears so long or so well filled as in the wheat on the 
nitrate of soda and guano experimental plots. * 
Plot VI. — Top-dressed, at the rate of 3 cwt. per acre, pro- 
duced : — 
cwt. qrs. lbs. 
Corn, Head 5 0 21 
„ Tail 0 0 IJ 
5 0 22J 
Straw • .. ") 1 2 
Chaff 02 3 
Cavings 0 10 
Produce per Acre : — 
Corn (head and tail) 08 bushels 50 lbs. 
Straw (including chaff and cavings) 1 ton d cwt. 20 lbs. 
The wheat on this plot looked rather stronger and more 
