THE farmer’s manual. 
81 
limes answer. Exchange of seed, either from for- 
eign countries, or different sections of tlie same coun- 
try, will sometimes prevent rust, and will otherwise 
well pay the expense and trouble. Crossing the dif- 
ferent kinds of wheat, by sowing the seed commixed 
upon the same field, and thus obtaining a new kind ; 
this will generally prevent the rust. 
The same writer recommends a top-dressing upon 
wheat, of sea-salt, or a manuring of salt ploughed in 
with the wheat, or even with a turnip cropj as pre- 
paratory to a wheat crop, as a sure remedy against 
the rust. Whenever lands become too strong by the 
rich manures, they will always occasion the rust, and 
they should be invariably tilled with corn, or pota- 
toes, as a preparatory crop for wheat, and then dress- 
ed with salt, or plaster only ; but never with the rich 
manures ; this process will generally succeed, if the 
seed is pure. The same writer goes on to observe, 
that wheat sown with rye, by way of meslin (so call- 
ed) is never subjected to rust, either in England, or 
in Italy, and closes all his ingenious remarks upon the 
causes of rust, with this conclusion, “ That the dis- 
ease is taken up at the roots.” This conclusion goes 
to confirm tny former remarks, which were drawn 
from my own experience and observation. 
The same writer has given us some nice calcula- 
tions upon the value of straw generally, as well as the 
comparative value of the several kinds of straw, and 
draws this general conclusion ; that straw generally, 
cither for feeding, or litter, is of one third, or one 
half the value of hay, and should be as carefully 
preserved, and used for both these purposes ; but ob- 
serves, at the same time, that straw, used for feed, 
should be given out as soon as threshed, otherwise it 
will become dry and of little value. 
Remarks. 
Straw when used for feeding cattle, is most valua- 
ble when fed out with clover, or when sprinkled with 
strong pickle, and fed alone ; unless when cut fine 
