The western sentinel. [volume] (Winston-Salem, N.C.) 1887-1926, 1894-12-06
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phoric atTd ammonia ana posashy
9TH. What per cent. of phosphoric acid, am
general crops.
Sth. have been mixing
100 pounds Cotton seed meal,
SO pounds Kainit.
and potash have &c. S. w FrankIinton.
answered by H. B. Battle. Director N c.
Experiment Station.o
l will answer your queries in the
order as given.
~ Acid phosphate is the best ma
terial to produce phosphoric acid, con-
sidering cost.
(2) The best article to furnish potash
for ordinary usages is kainit.
~ For ammonia, in our locality, cot
ton seed meal, considering also the
cost.
az The best proportions found prac-
ticable as general rule are:
1000 lbs. Acid Phosphate,
800 . Cotton seed meal,
200 g Kainit.
(5) Acid phosphate seldom runs more
than 1917 or IA per cent available phos-
phoric acid. It should always be bought
upon a definite guarantee, as any per-
centage can be made less than that
amount according to the grade of the
rock from which it is produced.
(6) 1t will depend entirely upon what
ingredients are used as to the percent
ages of the three ingredients, phos-
pheric acid, potash, and ammonia in the
mixture. If high ammoniating ma
terial is used, of course high percent
age can be procured; likewise the same
of potash. The trucking fertilizers
often run from to per cent. availa-
bic phosphoric acid, to per cent. of
ammonia, and 8 to 10 per cent. of potash.
These can be changed according to the
quantity of the different ingredients
used.
% For average purposes for cotton
and corn, the percentages given by the
above mixture are about right, namely
.S.55 per cent. available phosphoric acid,
800 per cent. ammonia, LES per cent.
potash.
(s) The proportions used by you,
namely:
200 lbs. Acid Phosphate, IS per cent.
100 . Cotton seed meal,
so " Kainit
are useful. The percentages given by
the mixture would be S.14 per cent.
available, 2.42 ammonia, and 1.96 pot
ash. The proportions are SO close to
the above amounts that if you have
found the mixture useful see no reason
to advise a change. / send Bulletin
No. 95, in which you will find many
references to the composition of fertil-
izing ingredients and their use in mixed
fertilizers.
Asiatic Pears.
d
who claim to raise pears from what they call
Asiatic stock from kind of pear of ASiatic
or Chinese origin that the LIE Conte and kief-
fer pears of this class and that they will
not blight like those of European origin. Is
there anything in their claims:-W. E. w,
Avilla. N. G.
answered by w. F. Massey, Horticulturist
n. c. Experiment Station0
The Kieffer and LIE Conte pears can
probably be claimed to be of Asiatic
origin. Not that they came from Asia,
but they are seedlings from the Chinese
sand pear, crossed with one of our old
sorts. 1t is generally thought that the
Kieffer is a cross of the Chinese sana
pear and the Bartlett. But so far as
we can ascertain, nothing is certainly
known of their origin, save that they
were grown from seed of the Chinese
sand pear, which was evidently acct
dentally crossed with something better.
The Kieffer resembles the Bartlett in
shape. The LIE Conte is now quite com
monty used as stock for grating other
pears upon, and from its vigorous habits,
and the ease with which the stocks can
be raised in the south will proba bly, be
a popular stock for pears in the future.
But that working a pear on the LIE
Conte stock makes it blight proof is all
nonsense. The lie Conte does seem
itself to be less liable to blight, but no
pear is exempt from it in this country,
though some blight worse than others.
The great vigor of the LIE Conte stock
may make the trees grow, or better able
to recover from an attack, but it will
not give them immunity.