i 
On Plaister of Paris. 77 
Answer. | never found any beneficial effects from 
strewing it on winter grain./d/) It is useful for all legu- 
minous plants, (buckwheat, a bastard legume) flax, 
hemp, rape, and other plants, whose seeds produce oil. It 
is also beneficial for most products of the kitchen garden 
and fruit trees ; Indian corn and turnips. Oat and barley 
seed wet, and covered with as much plaister as will ad- 
here to them, are much benefited. I have found little 
or no use in a top dressing of plaister, on either of these 
latter grains. It is generally most profitably used for 
red clover; though it will do excellent service to any 
grass.* White clover, being the natural grass of most 
countries, in certain soils, is most commonly thrown up 
by plaister, (as it is by several other manures) though 
there was no appearance of this grass before the appli- 
cation. . 
Query 8. When is the best time to scatter it ? 
Answer. I have sown it in most seasons of the year. 
If strewed in the fall, and a dry frosty winter succeeds, 
much of the plaisteris blown away. I have found it 
answer well, if sown at any time from the beginning of 
February to the middle of April, in misty weather. I 
{have frequently sown it on the snow in February, 
(d) See my remark on query 10th, which shews the opera- a 
tion on clover, so as to ruin the wheat crop sowed with it. 
* This assertion is too broad. I doubt its efficacy “on 
grasses, others than those of the treifoil tribe. At least there 
are many grasses on which it has no effect. 
Rs Pe 
September, 1810. a 4 
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