New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1857-08-12

Dr. DecGsDe, taftA apIo01lsy IJ!' .sHJ'SS
relating to ths p;an, ,e5e IS thG J.: We ~ Dc cae
u pss,be foy any enc nc: urdee. we'd 70 de'rg1.'a
ioIn potato. However,, The Gsoecores doe Hsl '2
pear to eont.in as macA fecs's when easo's'ee n
Fssce a. Il does il Is naive and; o. Dr. 1904 VIE
has eaten the .uher ., sssrgts' SD hsS"o, ioati
more OF his uAesnes IN them .5ere thts he bss "a
Paris. TIE the DEFER mpD.es - the msnser oil ets
.vaiion adopted n France. IL Chinese WORKS, VICE
The cultivation o! this par. = described, % recon-
Inended not 20 employ any other rnsnure :ssh SADIE
dung and, above al, not 10 make use OF nhga' s0H'
The planting should take place in Sl-ns, when mere
10 no lorger reason to fear hos, IN sois so' an D.
The summit of little mounds, 4 il Is desired 70 renasl
the extraction of the roots easy. This - the hsiAi
manner, Mr.. Aontigny Informs ~, saop;ed II ChHs'
The tendency Of the diosccrea 10 vertical 1eteop
ment renders il necessary 10 have deep and SOC to
as the RI IONA eEbtesnesn stem. desccnds 20 tre
depth of three feet and even more. NJ. Decssn9
rays lie has obtained tubers weighing over 'Vo
pounds, but this is not the Usus re-a.t, d
the average does To; exceed ore ponnd 70 one
pound and bali. Magnificent results hsre Den
obtained in the sor,h Of France by planting tie dos
corea in ditch about three fee. deep If which the ~
ieror part was filed with leaves, ard tie superior WIKI
soft earth. II Is the opinion OF some sgTicuui
that the tubers cannot resist the cold OF Winter snd y
is recommended TO boricnlturiss 70 protect the same
BY means Of leaves or any other way rom tue ensc'
of cold; but other hoticuturis: do not by any means
coincide in this opirion, and among Others MI Ian-
gard, who state. that although the leaves end stem
may be very sersve to the cold, yet such "on!I no'
appear 10 be tie case respects the root as th'ss NE
leit in the ground during tie Winter Q; la'1 20 10
were found rot 10 be il tie least affected aaouSh me
cod 10 which they Lad been exposed had been very
great TIE propaganda of lie dioscores is exc eds
in very easy mnnrcr by means OF the buibies Which
are developed in the axis Of the leaves, AMI sso ny
means Of slip. or pieces OF the root, TIE Cni"eSe
culiyatos make only Of the upper thin p.r OF the
tuber for this purpose and make use e the Inferior
part. which is much more yolumnous. for tbei: own
consumption.
Mr.. Decaisne tells us tha. the development Ct the
dioscorea is very rapid indeed, and thai !. calls )T
very little care on the part Of tie cultva'or. lie
planted in the month 0. April slips OF the tabor and
some of the bulbets as well the plants were a5ou.
], feet apart ,ong stems covered with Thick foliage
soon sppesrcd, and in the month Q! August many
aoveI-; finally, toward The middle Of September, the
plants assumed yeloush tint signthai they would
soon arriye al maturity. The period when !: IS most
desirable 10 extract the tubers az to obtain
them at their maximum of growth, q. vel a. when
the qualities the cultyator expects to lied are present
in aIoa.est degree, is most important to know pom
this point we cannot DO better than quote DR.. De-
casne, who says tia. it probably very natural tn
suppofe that Autumn ives the most favorable time for
the operation of extracting the trber5; tn withered
and dried stems would without doubt, lead the clt''
ys,or to conclude that the ubtcraneauN egtaton had
ceased and that Tie tubers had reached their mos,
perfect. development. Such, however. W. are told by
the French professor, is not the Gaze, ior II TIC
inferior portion Of the tubIs be examined at THIS time,
they viii lie found 10 be Of much lighter the
upper portion, az we'll as being Of yellcwsh appear
sncc, in fact, such as is always presented by any
rlizoma or root where vegetation has not finished.
Mr.. Decaisrc concludes by saying that i: is only IN
April that vegetation ceases, and consequently tha'
t- is the moment to extract the plants II completely
dcyeored tubers Iich in ambiguous matter, ana III
a, probability endowed in the highest degree with the
faculty of bcips preseryed for tie longest PERIOD arr
desed as it is always the most waery or least ripe
psl Of The tubcr q at decay ir;t when extracted IL
Autumn The plants Easy be distant about III inches
10 cent;meiIesl, or even ~ cenimetres, every way
Which would give from IL To a. feet per square metre
| Of lard. Surprising mean of % feet per square
| metre. erd annual product of 800 eramaias pei
foot we woald Lave /: 10 Of tubers per metre, OIL
1850 kloranmes l:p,ocO To- per hectare 10000
mehes about double what tie potato would
give urou the ssMe amount OF aSd Such are some Of
| The qualities which recommend the Diosco:ea to
Trerch agriculture The only difficulty tina. sppears to
present seE consists in the extraction, as the tuber
descends 10 tie depth Of two feet and more, and also
owing 10 The uber being larger 1T its inferior portion
than a. its superior-the reverse Of the beet-the
extraction is by no casy: however, Implements
husbandry, which ha. done go much TO advance agr
culture, viii probably in this instance aid the difficulty
which, if it cannot be got I'D OF, will tend gesty to
| dim iri,Lthe value Of The Dioscorea Batatas.