The Londonderry sifter. (South Londonderry, Vt.) 1883-19??, 1893-08-18

0io,OS, proHt Oh SoV'~o' Inc gram ticy
ale cost SAL which subtraoted from
the amount for which they sold leaves
SOS. 70 as the amount realized for the 49,
TIE pounds of skimmilk they ate, which
Is equivalent TO 80 cents per 100 pounds,
The fertilizing value of the food was
500, or 81 per cent of its market value,
Owing to the high price of pork at the
time they We're marketed, they could
have been profitably fed to greater
weight than in our previous experiments,
but even at z cents a pound, dressed
weight, they yielded no profit during the
last period after they weighed ON the
average $50 pounds apiece, and at or
binary prices Tor pork profit would have
ceased at about SEQ pounds live weight,
| Potato Blight.
1t hiss been definitely ascertained tha'
spraying potato vines will help 10 pre-
vent the damage from potato blight
Trials with 10 different preparations
Shove that the strong bordeaux mixture
gave the best results, though good re-
suits were also obtained from bordeaux
mixture and molasses, from weak Dor
deaux mixture from modified eau celeste
The gain from spraying varied widely,
On the average in the tests the gain was
about a hundred bushels. In other
words, the crop from the sprayed plots
was Just about double that of the I'M
sprayed. Three applications of the oor-
deaux mixture produced on the average
about one-third more gain than two APP
Iplications.
The bordeaux mixture costs about
cent per gallon. To make three applica-
tons requires from 200 to 800 gallons
per acre, and the cost for labor in apply
ing is about 81 an acre for each applica-
ton. The total cost, therefore. of spray
ing potatoes varies from $3.50 to 1915
per acre and averages about So, so the
profit for spraying is many times the cost
of the application.
The increased yield obtained where the
plants are sprayed is principally due to
the longer life of the vines, allowing
them to grow larger yield of potatoes.
There are two potato blights, named
in order to distinguish them the ''early''
and the ''late blight" 1t is known that
the late blight can be prevented by the
bordeaux mixture, and the indications
are that much of the damage from the
early blight can be prevented by The
same. Spraying for the early blight
should begin the first week III July; for
the late blight not until the last of July
OF the first of August.
Other Plant Diseases.
Much time has been spent by the bot
anist in Investigating several other plant
diseases. 1t was found that where the
red cedars in the vicinity of an apple or.
chard were destroyed that the apple
rust, previously very bad in the orchard
entirely disappeared. A large orchard
was sprayed thoroughly for the proven
ton of the apple scab, but the season
as fast as applied, and the resulting gair
in crop was not equal to the cost of the
labor.
Several greenhouse diseases have beer
investigated and much information OBJ
tanned concerning their occurrence an(
characteristics. The experiments fol
their prevention have not yet progressed
far enough for report. A peculia,
trouble found on the tomato plants, ant
which seriously reduced the crop, wa
found to be 1ue to an excess of water
Dat Smut.
Further experiments have confirmed
the reSults obtained year ago tha
soaking the seed oats in hot water en-
tirely destroys the smut. An increase 0
yield in addition to that produced by tn
smut spores has been reported by severa
Investigators. In the tests made las
summer no such increase was observed
A very extended investigation Shove,
that the loss from oat smut i'll this state
where native seed is used, is about pc
cent, and therefore not large enough t
demand the use of the hot water for an
: other treatment for disinfecting the seed
: 1t also showed that the average loss frol
: oat smut where western seed is used
) much greater than where native seed
; used, being in the samples examined owe
! three times as great.
' w. w. Cooke, Director.