Mamgemcnt of Hops. 
563 
at a cost, including labour and carriage, of 4/. per acre, leaving 
3 rows across the ground, at three different places, without either ; 
it was put on the 1st and 2nd of June. From that time until 
hop-picking I could not perceive any difference at any part of 
the ground (which was only 3 acres) between the rows manured 
with guano and those with rape-dust ; but there was soon a 
visible difference between the 3 rows not manured and those that 
were ; and the result was, that 3 cwt. of hops per acre more Avas 
grown on those manured than the average weight per acre grown 
on the three rows not manured. This ground was all winter- 
manured : the crop grown through the piece was 13 cwt. per 
acre ; on the 3 rows not summer-manured, at the rate of 10 cwt. 
per acre. I did some about the 20tli of June in the same year, 
but the result was not so favourable, although there was a per- 
ceivable benefit. If guano or rape-cake is laid on the latter end 
of June or beginning of July, it is better to spread it all over the 
ground, that the young fibres may act upon it. I have before 
. stated that stale-ploughed arable land should be manured for 
hops before ploughing or trenching, but that lime on fresh- 
ploughed-up meadow or pasture, laid on in the summer or 
autumn after planting, would be best. Lime may occasionally 
be used with great advantage on some soils — on old planted 
ground, at the rate of 200 to 250 bushels per acre. 
Diseases of the Hop. 
Having gone at some considerable length into the modes of plant- 
mg, cultivating, and manuring, I will now proceed to give a brief 
account of some of the diseases to which the hop is liable ; but 
to give a full account of the nature and origin of some of them 
would form an Essay of itself, and one has already been the sub- 
ject of an Essay for a prize given by a member of the Society. I 
presume it is not expected of the writer of this Essay to give a 
full account of the nature and cause of these various diseases and 
the remedies — that coming more under the department of the 
scientific than the practical man : I shall merely state what I 
know practically of them. The hop-set is no sooner put in the 
ground than its enemies find it out. The Wireioorm attacks the 
young plants and destroys many of them, and particularly on 
ploughed-up meadow and pasture ; nor are its depredations con- 
fined to the first year of planting, for they will renew their at- 
tacks the second summer, and continue to do so until the plant 
is too strong to be much injured by them. The best remedy is 
to plant a potato, divided into two, near each hill, and take them 
up every day, pick out the wire-worm, destroy them, and put the 
potato in again, for more, for they will leave the hop-sets for 
potatoes. Every assistance should be given to the plants by 
