This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted.
In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed,
a note will indicate the deletion.
Dissertation Publishing
UMI DP70423
Published by ProQuest LLC (2015). Copyright in the Dissertation held by the Author.
m - -------- -- - - ----------- — j» mrnm *nn m - ” * —»■■-» x*£t$K&Q f M M t n iQ •% *£
I f f $ $ $ $ $ | ® f ggHftf&DO&l
TC ' ... •■•—gftO£fI3M fflHT ^EfUSSWC ----------------— ------------ »— — — * m m m m m m x m
x ------------------------------------ — ------- - tm io m m m
ummm m nmi
x
ii
U3T OF ***»«
Page
A nalysis o f Variance o f th e E ffect o f Time o f P lanting mi Ihnfeer o f Storage Boots* S ise o f Storage Beet* a 4 Cracking o f Maryland Golden and Jersey O ri^ a Snoot Potatoes. i f
E ffect o f f$ m o f H u ttin g on fie ld * Bmafcer o f Storage Hoots* Sis# o f Storage Hoot* and Cracking o f MarylandIWIAmk *m*t JttPitt? Stf&et lttat@9fl* CliOtOV’* * * I S
3* A nalysis o f Yfcr£aii@e o f th e E ffect o f f t o o f M an ttn i4MM fEoeSfcjftak iWkOadl t&fSwtatt 'fckiMe &k<F" Sn■OeOAkSk SaiSS "IttelMOBfcsB -Sa-dPWi £«mW4MK£ V®sBHW|f sKBlB JP*5HBIe(HF W AldiHd'tNIp Watland and Je rsey C^ttrgif Sweet Potatoes* (lf$Q ) n -—■~- IS
4* A nalysis o f Variance o f th e E ffec t o f Tin* o f P lanting on Sis# o f Storage lo o ts o f Iftry lan i Golden and JerseyCSOltgO SWCSt FOt&tOee* (If5 ^ j '' ■ r:: :TT—-‘~-Tr'.'''- "Tr ir'r-i-inrr'r .■“r-Tr-i-—rrr-r-m—
5* E ffec t o f f ia s o f P lan ting on fie ld * Grade* and Sloe o f Storage lo o t o f M sylapd Golden mid Jersey Orange Snoot Potatoes* 20
4* E ffec t o f f ts e o f P lan ting on th e ioafcer o f Storagel yt s o f ISnyXjHsd Jersey Orange SweetPotatoes* (X fJ0 } ~ ~ ........ ...................— — — --------------— n
i* E ffect o f M il S p rin g on fie ld * idd*er o f Storage loots* sAq* o f Storage Hoots* ema C rteklng o f limy* land Golden and Jersey Orange Snoot Potatoes* (1949)--------- 25
f • A nalysis o f Variance o f th e E ffect o f M il Spaelng mi fie ld * Grade and la sh e r o f Storage lo o ts o f Marylttad Golden a sse t Potatoes* (1950) ---------- 2?
10* A nalysis o f Variance o f th e E ffect o f M il Spacing on th e S ise o f Storage Boots o f M&tyland Golden
mA Graefctag of Maryland GeMen Snoot Potato#®* (1949) ~~ 24* Iffect of MkMt of Propagation 0 1 TteM, M o of
IS* Analgr®!® o f Variance o f th e fttftosl o f Vine Ironing
Snoot Potato#®. ------------------- » - | t
If* tf f o e t o f Vine Craning on T ieM , tM » « and S ise o fStorage Boot® o f ltep la i* i Golden Snoot Potato#®. (1950)— - | |
IS* £ f$aet o f Ha® Pruning on M b e r o f Storage Boot® o fJ te f ’t e S Golden Snoot Potatoes* 33
If* Average Bian feo|NMratBuPo a n t foe*o f Ten Tno-Wook W io S o Beginning Hay 6 and May 11la 1949 mat 1950 leapeet&fely* •■ ------- »■-------- .-««...—-- %
20# Average T ield o f Storaf® Best® pan limit la Gram® o fMiiipMiff m¥»>rfS uSoffi"! -orMiitJ# omNtoKOMo WmooSonS,-,S'Oh* tyi n-Mitr eoaifHmFjf iiywiim ^lalRMi HfTO n w P ^ w w pp ofmrmww&lMp I’AWiMtiVSM
intonale Stfiytl g aty 1fimw* after M*^4ngT.«,,.«lll.l.ll<....>..M«.,,l«.IM- jg
S3W Average tPHIlgiit pen Storage to o t la Gras® o f Marylaadii^hm| #or<oy or**1 VVtfi iHHLoe fia a to d a t Peer
S ta rtin g S ts M o a t t a r W anting.— ... . .... 42
2 2 . a m rn m e m o f IBnp^fii^ir®®® locMBBnalatoS Bohn®®® P lan tingDate® end Sttoceoeiv® Sarveot® i9 5 S t. — 11 tn -nr-T- -w- T-n-nr At
SI* Square Boot® o f th e im m m he ig h t per Storage Booto f Hwylaod aset ^w owy Orange m o at Potatooo
StorOijpo Root®, Sis® o f o f m ^ rio o i Soirnm snoo
M ai^raia o f fartim eo o f th e M foct o f Vino Inm ingoaoe ^O yx f%noaaNtt' a SiMafa V mooflfch te a oafr wnAooe^M!^ 9yteonSl'' o oofPwi 1 **yyBy vfr*tt*| m v isiuiiiiNW w* awppogpi Aiswfeo e*
it
m s o r t m m ( m w m s )
SIn CNN £Ss SSB^S Of **** itex?RFRRIRIFRiPRJRPRR RRRRRRRRRFRCR&RPRfi RFRRRRRR 3|FRfcRRI®ii«l(Ri(RRR RRRRjIt
j|j|t Hw*s® T**$d p tr In Gram* $£ Siiwa VseIsSIsb^ ]PRBR§NRRfeRRRR(R RWGt j^E. ^jRRPRR£R£MMFt, RRfeJfrtir f^f'fitfg |y f fmt-Uff H flfrt s lS s r *»Af « ^
393* Awrftg# tfolghfe jhnf ff%jjPOTfc roof* ot Golilflsi
S t fSUlT aSSBSee** s ir e dAtfff i i4 harvested S t teo-eeek in te rv a ls start* ''
4* I 9 ^ p y ie ld i f sto rage ro o ts per p lan t o f seven
a t *4y successive d a te s s ta r tin g «rfir afterl^ant^ng*- gL
5* A fsrigo Height p e r sto rig # ro o t i f M M SHSSt po tatov a r ie tie s p lan ted m $&y f f uni i t s ixs n e o iiii.f i da te s s ta r tin g sty v e s ts a f te r »*■- 54
4* fasreasis in th e ssdglhh per i&orage ro o t S trin g tuo***seek yor t sds i f seven sesoh po tato v s r l s t ie s p lan ted on Map $$ and harvested i t Bix successive dates
A m A f 'mb a u A iA hM I d M t A H k 4 ^ , 1- A M l I l 4 t t t lH> _. ^ . . .. . . . £Tj£^starting six wseJm after »•■»'»» ■ »■» ■»■> 50
7* D issociation o f co rtex in a yeang a to n e s r o o t * ~~~~ 40
3 . A shallow crack in eo rtex o f a yenng sto rage root*—■—— ■----- 40
9* A crack p en etra tin g th e catabial rin g in a youngsto rage 40
10* M erlstem attc a c tiv ity around a deep crack M l fe ro a -tle n i f feseM^g m ye»i«fr t 42
1 1 » # * f t K M u if e -________ -.....■.. ...... ......... .................... -............ £ 3
* S d h ■-=■ - i — at^J& » IwL.^ftib^lK: .imi.^3 . . . . . . .
13. A oc fiXstel r 4^414 stor4ig4 root i4wwfy'Tt£ a atscon**
14* A |^ a * y ^ 4 '*]|: | | i n t i fp f f f f f1' a c tiv ity — -----nxrr-i 1— 44
yU
urn o f nmmm {omnmm)
13 m la& eraal appearance o f Maryland Golden and JerseyOrange tis su e s showing various degrees o f fs o life ra tio nwhen subjected to d iffe re n t le v e ls o f teaperatiare andh taaid ity . ------- 65
16* P ro life ra tio n in Maryland Golden tis su e s a t 65° P* andre la tiv e fcmmia* ty —• , ... - 66
17* Hoaid tis su e form ation (above arrow) in Maayland. G oltoia t 85® F* and high re la tiv e huat& lty »— •--------~ ~ — --— 66:
IB# Absence o f wound M asses in Maryland Golden a t $5° F*and loir re la tiv e h u m i d i t y # — — ... 66
If# p ro life ra tio n in Jersey Grasige tis su e s a t 65° F* andhi gh re la tiv e he^M ity *'-"O’-*-"*— 66
arrow) in Jersey Orange a t 85® F# and h i^ t re la tiv e hum idity. - - — — — 66
Zkm Meand tis s u e form ation (above arroir) in Jersey Orangea t 85° F* and lew re la tiv e hum idity -------«—-■ ■»■ ■■>■ 66
22# Cress aectiona in young sto rage ro o ta (3 sm* dianu)o f Maryland Golden and Jersey Orange v a rie tie s* ----------- -------- 68
23* Cross sec tio n s in young sto rage ro o ta (6 usa* dianu)o f Maryland Golden and Jersey Orange v a r ie tie s showing development o f p e ricy c lic parenchyma. -«».■-> —- 68
24* Croaa sec tio n s in natu re sto rage ro o ta o f MarylandGolden and Jersey Orange v a rie tie s# -*- 68
mare discarded* ^hrm —fo u rth s o f an Inch o f th e p p m im l end o f each
po tato mss chipped o ff in o rder to se le c t fa r in te rn a l o d o r and to break
p ro x iaa l doadnance (37). duet before bedding, th e po tatoes mere dipped
in "P uratised A g ricu ltu ra l Spray 5>$* a t a o f 1 p e rt per
5CXX) p a rts mater*
As th e p la n ts mere p u lled , t hey mere handled and ro lle d in met bur
lap bags to keep them fro® drying out before planting* A period o f 24
to 4 i hours elapsed bet meen t he fe-fw*** th s p la n ts mere from th e
Hfxis and th e tiffie th ey mere s e t i s th e f ie ld .
Ipis la nd sms plowed $ d isced , and harrowed p reparato ry to planting*
Pft|> MMWrtncfc, e f feti* — wnA * m n m Wl n-nt.ttA **t.-feii l* j>a*M§m s e i w u e s s s e r w s ^ s e t o s e * . w a p ' o s s s p i swgpsmi 4 i * s e e r e ^ r ^s* jaw sii^ ^e sa^ o ^H ^ s ie i s p o s s s e s mw1 e r ^ i o s s o s ^ s ^ ^ a a w e e s ^ o ^ w ^ s
spaced 15 inches a p a rt, i s 32-inch rows* la th e h i l l spacing te s ts ,
J ; j 3
HiI
H nS 1I § 1 I i ■*m i
t
5 |i 1 f
i j I Mn * ; 3?; i 111 * i s*s l ! H i .1 1 4 I i 2 j
Table la* E ffect o f H ill apmafog OKI th« M i r o f Storage Booto o f GaMm Snoot Potatoeo. (1950)
L . 3 . B . € $ $ o » « * n . o «
29
T*bl» ]} , I M m t of tfco Effort of Hrtbod of
l&SKt SdT ^ f y la r t S6 hS8®i'
( m t )
V FyaM*nm>
JSP§* Wt* * * * * * * *
OMt—JLfc. -. -*•BWttwR 3 to @*9903 473.06*
isfee 3 7S7*** 0.0*7*** 73*9*
R»pH**fcd> 3 w en #* AWWAO*0yfs 43.33
g f^Utt 3 3139 WW iniiFV 37.74
9 314 0.0032 70.fi*
T otol 35
^D tfL M n t I* otto o f U N I «B ignijncnit r t odd* of 99(3.
M MM MM # * • * * •13 S £3 £S £
* » m m 5 5 S iS i 4 4 S i
♦ ## n5#
#m
m m m-i m m m m m m
4jj a t ;
4
Table 15* A nalysis o f Variance o f th® SXfeet o f f te a Franing on XieM , Qrada* sad M b s r o f Storag® Boot® o f Maryland Golden B m «t Potato®®* (1950)
P lan t ing Bate o fBate . ':rJb&s SB .........Jggix-»____ Ju ly 20 ...........&!£*. 3 ....... « £ • ■17 ;...r . . . m k * . f r ... ......jb L .
M aryland Golden
3 .4 t 1 .6 9 .6 t 2 ,3 23*8 + 0 .4 57.9 ♦ 17.2 68 .6 i 7 .1 161.3 £ 15 .7
1 .5 ♦ 0 .6 7 .2 t 5 .6 12 .1 t 5 .6 31.4 t 4*6 3 .7 1 1 0 .l t S .1
2 .0 ♦ 1 .1 17.6 t 0 .7 34 .4 t 6*1 56.7 t 19.9 75.4 £ 34 .0
3 .1 1 0 .4 7 .9 * 2 .3 22,6 t 6 .4 48 .5 £ 19.6
Je rsey Orange •
2 .7 t 0 .4 8,1 t 2J* 20.8 t 2 ,3 46*9 t 3 .7 6 7 .9 * 17*3 109.5 t 16.5
12. t 0*3 6*0 * 1 .2 13.0 t 1 .3 33.8 + SUB 51.9 t 14.3 86 .9 £ 4 .1
2 .6 i 0*4 11.3 t 3 .4 22.4 t 0 .5 40 .0 * 4 .9 66.0 £ 33.7
2 .8 t 0 .8 7 .5 i 1 .3 16 ,5 t 10.2 30.2 £ 30 .0
Mgr 11 1 .3 i 1.1
2ftgr 25
June 3
June 22
la y ix 0.6 t o . i
f ty 25
June 8
June 22
42
6 M S.PER
ROOT
160
140
120M A R Y L A N D
G O L D E N00
80
60
40
20
120J E R S E YO R A N G E100 -
80
60 -
40
----------- I st PLANTING — 2 nd PLANTING------------- 3 rd PLANTING------------- 4 th PLANTING
20
191612 141086
W E E K S FROM PLANTING
H®»r* J. Tha arartgo aaigbt par atorage root of Mujrlaad Goldan and Jwraagr Oranga awrlatlaa planted at four auceaaaiaa dataa and harvaatad at two-*aak iotamOa atarting six make aftorp lan tin g .
& were eata&a&ed fro® growth curves where th e a c tu a l w eights w n p lo tte d ag a in st th* a c tu a l age « f th* planta* Th* ]|
th a t th * e ffe c t o f til* tiise o f p lan tin g on th e growth re t* e f th e
D ifference lYKjaired £®f* iffffff ft-iM'mff batw an any two j | * fl*J9
Table 25* Average tm im ? of Storage Boots per Hast of Upland. Golden and Jersey Orange Sweet Potatoes Planted at Poor Successive Sates and Harvested at Two-ltofc IntervalsStarting Six leeks After Planting.
o f yin® optatoee* > Karrland Ckslden m d Jereey Orarige Ta»iiiSBmiiii'i D#iiSfflmiii jpaLiiSBiom ^w®gp lWJp,H w ¥ ■
fable 26* Average Yield per Plant in Grma of Sov@n farietiaa ofBurnt Potatoes Planted m May 25 ®ai Harvested at SixSuccessive Bate® Starting Six Weeks After Planting*
P eriod f^sna. P l m t i m i to .H arvest f a r le ty ........................ ."IT m S k a ' " ''8 'w S S T n r ~ ' 'M w bS » ,'“' ''l 2 w o ® k &
Maryland Golden 4*3 t 1*0 20.0 ± 4.0 61.5 t 30.0 179.7 t 31.3 320*2 t 116*0
Jersey Orange 5.3 t 1.2 34.0 t e.6 90.7 t 6.6 242*2 ♦ 29.2 450.2 t 34 .6
Htth regard to th e •sMfl&er o f sto rage root# p er p la n t (fab le 2 9 ),
I t to in te re s tin g to net* th a t th e re to 0 negative c o rre la tio n o f
- $ » $ 3 # between th e s is e o f th e roo t# and th e number o f root#* ?art~
y
number o f ro o ts per p lan t (fab le 2$ ), and v ise verse* On b asis o f sum-
if ro o ts p e r p la n t, th e d iffe re n t v a r ie tie s a re In th e follow ing
# • « p * t
fo r a t
tainm ent o f th e f in a l masher o f areata d iffe re d w ith th e v a rie ty ,
tabs h e n
and only 2 are
e a rlin e ss in ro o t femar*
and T r i l l a re sow**
o f f in a l number oi
roots*
Table 2% Average Rtraber of Storage Boots pear Flant of SevenVarieties Honied m Magr 25 and Harvested at SixSuecessive Dates Starting iix M m after Planting*
Berlod free* to H arvest .Variety____________, I jggfeL_^. . ..... ICWHHL-.,■!-,'!■ ■ te -W m * ■ ■ 12<wqk» ■ :. t t MM*ML. . . . ...13.. m tk * .
5 ,1 t 1 .1 5 .8 ♦ 0 .7 6.5 ♦ 1 .6 5 .7 t 0 .8Maryland Golden 2.9 * 0.9 3*5 t 1*6
Figure 14* App&ntina uaed in tis s u e a c tiv ity experiments.
Maryland Golden Jersey Orange
S5° F* x Hoist
85° F* x Dry
50° P. x f oist
50° P. x Dry
rM wrm
)<V
figure 15* External appearance of .Maxylscd Golden and Jersey Orange tissues showing various degrees of proliferation when subjected to different levels of temperature and humidity*
0
FOE $$ TQ 0L
£R& aL 'flSfetittikrS JB 4 Mfc iBtafc S 4k 4 Ki M a.afc B 0tk4k 4&4S44 44 AtafeidE¥&i$mmW- mmm! kmWIPmWm0m^mk **» JRav JyMMI ttWelwpB wMHRMmP Oh# ®3f * # «SBO
arrow) in ISmyXmi a t 85® F# a®f b jjife re la tiv e h a a lilty *
Figure £8* i t a e t o f wound tieau ea in te^X oad Golden a t i f 9 t*
m A low re la tiv e hum idity, Figaro If# P ro life ra tio n In Smtm^r
Orange tiaeu e# a t 85° F* end h i # re la tiv e hum idity. Figaro SO#
&fifti*r»3 %Xoeae fons& ti^i (above arrow) In tlereey Ormge a t if® f #
h i # re la tiv e feasiiiity* Figure SX# tfetxnd t i m e fonaatien (above
arrow) in Jeraegr Orange a t 85° F# m i lo ir re la tiv e famaiiiiy*
m
C« V O rlatal M fferosee* in S iitteture*
Storage root* o f Maryland Golden and Jeroay Orange v a r ie tie s
nor® e o llae ted a t d iffe re n t stag®* o f development ranging trm 3
to 5 In <H*a®toap oppr o v l Mlc^ooeople aumrt'Tiatlfli*
4 »m§ %f|fl|t thOOO tHO V arieties diff88T In tlWl OfWM111 0*$i StOTt®*”
tor® o f ih o ir sto rage ro o t* . From vxmina&lm o f cross section*
VS®® SSBtplaS -KOtO t fltTf1 fjf dfftwn*wn t ffn ®f tt>| HOtST 1ftfFb#fr* yfteh
•ach Maple being $npoMl o f S 1$ os# section fro® the central portion of f 1t» rlnet chosen *& random* floss mm sslXsotod £vm its field alsMys ob ssa$st« *1.11 lifOfos omt jMAi«»tAy who ^ IfT d off oMt tiio
u#fc4M#db J t Mm &Sfc.^K M lilM .A J i %im» SbSi#.Mfc i i m m rifc jlT Kb MillkXO^nMfeAM & m JlOlrSlOB# 0 * 1 0 9 t i r M H aro OOvlurOil Ogr m i m OX S fw W fp r n lw r
bllKlS# fbO f ifo j>0rti®EIS SOSO tNtt® ff ffa^d fqp4 f f yfe.1! #>A*I 1y
s boatst* sd tli fhad® b asa l ifnit Is s s i’ssd 3® ssbor# iti** beabors so re lo f t
Ob f ftfiwi tssy srsb a rs fo r Ob hffir t i A fter tb sd p arted tb sy so re raworsd
fro® sa te r* b lo tte d gen tly s lth . tf iowio pspsoj #**4 y fi^ ie d ngftfiH fly sober np^bi* pereesba^e s s s *»*»i aitJMi ^ ^ sadidsb basis*
A. Kff*e» »£ YArUAy.
O n « t| Pwrto Elco, ftln U , B-5W. W i «A J u tn l te Casnar, A -
fn m th e f in a l harvest* save in regard to th e ir N teT
in£ s high## sfflnity to seder they ddssay Oisa®o# farts IHifff Sod sere ishassadlebe SM* TrOtl ifffii JsoddddyUsi Oesasr sets "TftCOispsriso® of the sator op tsbs o f the shors§PS roots of ttosso assdotias yieia tssl^r a ioaff aasdsidss io soistaaapo osa**
toot 4* 0 ad r if t bHt ospisSiss 1® sffiTytty of tbs tSsaaios to sstor* It say to eoxHslsdsd tlist tlm totsX saisto^o do tho otoi*sge
n
30 t MEfrl. X olsU r* IM tr " ffyrt i t ft* o f tb« IB w ^ e
lug t$m #fy ptiHhHt mm y#98 pBp Umb 4#yi-f?g Hi# wot jKWlodU Umi s#**OS*# JffWSfWtts f j j i J ^ ; atra ifoo WB&SIf
0jp tbs win## was #ffb#b#<il ly tbs bsosft kbr tbs i yypiff
o f tbo two p erio d s, <l#rs#y Orange and B-5999 ofclb& toi Hi# h ig h est
afeMSoAt^MWL Sfc$ tt£ fe MbtiSOMflMllfc. ! & & 4 k 4 S 1 1 1 M l k V ' j S #fc»%^g[ j f tn # JMMl'TlMI# 1 j | # m « M t t M U k 4 « « 4 A « i ^ .V H w SqpwHEPy t w w J&M#9f IttHl mHrV 3UuMKP
ssodiot#, JiH?yl#Kid fioliAm ssd Ir-tbyi wars Toitoiiti i mtiri.st3.6s
T able . M tm t e£ tb e S i*e o f Mate* on tfc* T otal M oisture and W aterin Mftamrlttrid 'tendI .?*»•*» CfootewcMo f lu ^ i aterikJtffcjMMo,.osie e *'Weej» 8p9 je$MSj m *we Beee Be bp i*
Grade
f f i£ » j '~ : _•_ J fc fe ir M i b % ,',m iGolxtea
oSiatoWiaikawpy2ffflrORB*.. Mm® ..........._ .
CVatitomfoHMf..Onau^L
75.18 76.29 75,73 86.0 19.9 23*0
sm&mm 78.64 73.88 . 72.53 21.6 18,3 l f * f
f*jfpm4ng 73.00 73.35 73.17 ; 35.5 23.7 26,6
Mean 73.60 74.88 25.7 20.6
V ariety
Grade
7*33
II*!®1
I*®*
1*29
111.17**
*31gnifieant aft cxUU of 19sl**8Lgnifleant * t odd* of 99ll
ro o t r a tio of th e eifeet p o tit# p lan t open tlio m oisture re la tio n s of
too Mmgrland ®oMm a a rie ty nay bo obarftcteriood by i to ftargo
ateroee eooto . t A # y « iTeroeT OrftB^o a laygai* m n b o o f00 eeooa ^ aigome jp eoao eift i oojg pnpp apao a ooooe aeo ooooppo^oia
m
sm aller root#* W ithin each m is ty * d slisr la plawhlag m m to to the
s tro n g est fa s te r depressing to th y ie ld m l s is e o f sto rage ro o t* . This
o ffs e t o f tin e o f p lan tin g was stro n ger In Maryland Golden than In
Jersey Orange* Tine pnaiiag a lso decreases th e a lee o f sto rage roots*
and la te pruning la a m s ffe e tiv e in th is resp ec t than ea rly pruning*
M U spacing m i n liad lcate th a t tan e lse ox ta s stowage root# nee
rodeoed w ith a decrease In th e d istan ce between th e p lan ts* M s e f
fect* however* I s n s rs eb fle a s whams wide range o f spaelngs m i tested*
th e two methods o f jro p ag a tien , sp rou ts and vino se ttin g s d id so t show
Say d iffe ren ce in regard to th e ir o ff so t on th e a lso o f th e sto rage
roots* I s studying th e e ffe c t o f eey tiif* fa c to rs os th e a im o f th*
sto rage roots* c a lcu la tio n o f th e average w eight per ro o t seems to he
mere swtlM^lv fo r t he w ith swat ie a t owilM atlan o f th e d o ts dnfo th e woe
o f a grading system elans* although th e grading system i s n e s t su itab le
f a r a p resen ta tlo n o f th e d a te f a r p ra c tic a l appilcadloci*
In contsH l a t ing th e e rselcliig psvtddsi w ith th e previous IsftsM a*
tio n as a background, i t way seen th a t th e aaseaf& lh illty o f hw ylnad
Golden to creelEiiig nay l ih i ly he due to th e production o f 1nrgo s to r
age roots# B asa lts o f h i l l spacing s tu d ie s , may a lso in d ic a te th a t
cracking tends to increase w ith th e increase la e lse o f sto rage roots*
Date o f p lan tin g s tu d ies ind leate* however* th a t th e e lse o f storage
r e s ts could not he th e only fa c to r Involved In cracking* Ihe f i r s t
and fo u rth p lan tin g s re su lte d in th e M #*set percentage o f cracking
In I f t f * although th e itswfc p lan tin g produced la rg e po tatoes w hile
the fou rth produced re la tiv e ly sw ell roots* JO rtherm fe , vine cu t
tin g # re su lte d In more crad lin g than spreads* w hile th e sto rage ro o ts
pOOOMMMi Of *00 OWO IW N l W fl BOO OXXXlf'Ottt in i t i l i «BO OXXOOtO
on osmfci&g of data of planting and of mthod of propagation nagr again
load to tho hypothiooti th at thmo ia a oothtia pfcyalologlcal ago a t
ohtoh tho otooogo rooto ojpo ooot off ootod hp oaaddJIfoao oaaadng oroolB"*
lag*Stodioo in 1950 rooaodlaji tho ddmlotBiant of aim otorago rooho
ahm that w io ttao of omul peta&ooo diffor in that* growth hahaoior# In ooo gpvapf liwtlailpg Jhueyla&d CSoldon, Jooaajr Carongo, and B-5999» mo Tooo ox gam an mo migiii ox too otorago root inopoaooo myoma"* out tho ■nnonn, in o otrormf gratis including Ihrto Moo* fHltlj
ana aaowyyytma WHaMWf# aoo rooo ox garni an mo waodpa jaNr 0 0 0 1 0 0 0 xoooJ L k B M M B M a a l k B k j u i u l 4flksdt O m j B AhiiflBBBJtfLBifeiMk dOtlfcBfc I M I i M M B O « b 0 V a jM a k O j 0OTOPJNMI WORHPOO OwO ana OX 0B0 aNNH|00» #00 00X301If AJUL Oia, OfmlOOOPf
oao ontqpio and io alMMraotaodood hp a yoptd mho of growth dofffflig tho flro t part of tho m am i # HE jrrn^roift lily QVifff down tho oHI of tho ooaoao*
la gamml# tho Ijmhpoooo in plaid poo plant ia tho fimh halfof tho gpFOptnf oooaaa to dan to hath innmnno in iffO!!**!!* #nd might
i J k h k i M d MhMOMMAOftOifcA j*ung0 jtthbdft iMkdP1 dkhfcjfe OlMkJMhMB WNtfcBk. ita^M iilM lU l'JPHBlflMKPl «P0B !■* SIMPPVWMRR Sit 1RVn|p$ w VflME. PBiWWis .- *»• mlmm TmjJA UWm
far marMnii ^ to flaal moribor of atorago rio ti ooooo to to a mrlotolm m J I « i a a M « .^adbrOk^B ^ flU a ■O kflPtiifaflM k^u^a^k.aa^a a M k ' f lh a a < a a a a . mqniiNMftor<ioaa> mo aoa*3seiML: axxiofooiNMi ib mo wpo ox groom ana
Oovotapmot iadioato dtf foNnt: tooloomtiiro imlid UmlhioWji hot naoo remaroh mot ho dono in thio f iold hoforo onoh dtffmaaooo in growth
aoar ho yroowrljr oaplotiiod#that mwgrlaKid C Utaa prodocoo largor at^ogo toolo than Jorooy
Ormgo hao boon parovimtaly aontlonod* Id a oonparioon of tho grorth
omvm of tho too oariotioo, I t mo fowad that hhto w to ta l dlffoa^
3flff If 1i - U i i H i ,
81I II1i I
IaMI
i I
It3
I
i iI
11 i
* I
tumult potato*** v a ra h igh up» both
« ftff!4y|ijy odt llhl Mtfffiff
ttd itlo o (3)* HNS t$ ,iiiBO aotlv itgr wiO JBMJwrod by
ing o f in ja red t te e m s daring th e coring period* (h ea te r la s se s o f
kSryijaid Vfrfif* o f ^Orpyy* dredge oro oneoontorod daring (dosage#
th e lo n er tis s u e a c tiv ity o f lOkryland &*%#*** la m & ao a fa c to r fo r
a lo m r ra te o f taMtllisa and iMfifvr e r <yallty* I t ia believed
t lio t t he M-pup t a c tiv ity t e s t described ia t**i# stud l m y bo a ^ir tfv i,.
fjw i fo r th e m oot sedate bm oder* i a th e 4nQ«i»g o f Hemmed*%& o& elitv
o f m o am a t jMdafrV v a rio tio a , apd fo r dv t v p v l t h # ro^patiro*'
a m ta o f th e d iffe re n t typoa*— O—O . -— — L.dO ^uMkdJb MkL pdb-AMa>.. u k*M «H*eitoBa» aVjAL J*k .MKujUHd aMkiLiPll MbiteJbiikV m ak Utotti jftifMPflMA ^^0*CaXSw68E3UB§ wJT jpWflSilBEwmm O® ® ®®»3bSFB9p JHP®®jy(Bll mRflSBl flfeP6®a@0Ew
p m iom occur daring th e e a rly atago* o f developawat o f th e atorage
rootOji #f»d |(i f«» <**wqpf ga tIw l y lo v t ^^i^^^Btiiirep p>qy>qw||qaniffiiil by bi £
m la ln ro f r w i i l a t tdai aHI o f th e anmtnni tioder w ob ooaditiono
a delay ia harvoot m o ld bo inadvisable* Hie re a u lta obtained by Ogle
9?
(24) £roia the us® of growth regulators seem to he promising* Since
the varietal difference in susceptibilitj to cracking mas more con
sistent than any other factor, hewtw# the ideal solution of the
problem remains in the hands of the plant breeder*
% R g r
1706
56
m
vinos o t Jtr& w Qracga a a jff ia ity to w ater titan Hary-
l a v i ^ l TT- I m oHassMaas&L^^Jl 1 'feJfek^aaaa^SMiaok a It* ne on altos W ta ^ m assina^fc.MJmm wwJUmmm* <§'v w TO IJUGl V w fm w o ^ C o f w m W w a w r P # W W > w « |w r IPFW im PK r'" w *
Golden sto rage ro o ts would rm & x iu rg id itir f a s te r tfcsn Jersey #*u&aa*
C r A c k in ^ O f SW A ttt m tvkm iuntug. mactr fa* d e s c r i b e d OS immiAmmm ■ . feH o 'ape* o^sesoosowsjRk erop spoeupatr or jp^pp^ropsps aii op p^ae ssHoos,ue^ .•■►puippp e pjp ppypr p pM p # w pit
ac tiv e ou tor tis su e s of the sto rage ro o t due to in te rn a l p ressu re 1
exerted togr th e cp&tral. In a c tiv ity o r t b s ' c a te r tis su o s
Ik »Vr k* jiostu-
%%*s savors oraoldUig v ilX raaaS t ya*» pgol&soei droonkk -jaodihts
vtlfr a s is ta ro ptpsvail. at- Uni s#ft o r Ska tvttiMfn TS** i f f iiniw* o f
1* A rtsciw ager, 1* On th e aaabesy o f th e a sse t po tato ro o t, s i th note# m th e in te rn a l breakdown. four* Agr. lea* 271 15?-i m * x m *
2* IPwHt jsnirtdsm foottstXoB in th e potato aa a ffec ted by te sp e ra te re and hum idity. ^ear* Agr# Ees. 35* 99*>1000. 1987.
3* and ib a r r e t t , E# 0 . S uberisation and sound p e r t-dam fo raa tie n in m o at po tato and g lad io lu s aa a ffe c te d by taapara&isre and re la tiv e hum idity. Jou r. Agr* Ees* 43s 353- 344# 1931*
4* -llll-lllll--llll41talllll- ^ Taber* aod ifffwHlf cork " ' ' " t o a ffec ted by teap era tu re and
re la tiv e hum idity. Jour* Agr* See# 47« 467-674# 1733*
5# Cochran, V* Cl* and Gex, 0* M* Bgporleental Designs, le v Torki John Wiley and Sons, Inc. SJpit '
6* £ l-K «ttan, A* A* The y ie ld a d a iae o f a sse t po tatoea aa infX e- m eed by aetisod o f propagatim » d a te o f p lan tin g , h i l l spacin g , and rev spacing. IS* 3* th esis* Univ. o f Maryland* 1750.
7 . F ra s ie r, V. A* A study o f seas fo s te rs asso c ia ted w ith th e occur- rence o f cracks in th e tomato f r u i t . Proc. Aaer* See* Bert* Sal* 32s 5X7-530* 1934*
S* . .. r and Bowers, J . U A f in a l rep o rt m s tu d ies o ftan a te tm i t cracking in Maryland* free* Aasr* See* Bert*S o l. 47* 241-255. 1747*
7* G arcia, P* a sse t p o tato culture* l* M. Agr. lap* E ta. Bal* 70* 1707*
10. Oardner, ?• S ., B radford, F* 0*, and H o tter, H« D. The lU ndaaaatala o f i m t Productio n * le v Torfc* McGrav-Hill Co* IfS t*
H * B arte r, 1* U and Weiner, J . U A monographic study o f a sse t po tato *5* 888*888888 8883Sl 8888Ji58?88j5irf, **,* 5 . ^ 8818^o f Agr. Tech. Bui. 77*W ? .
12* ^ a n d t& itney, V* A* Influence o f s o i l tem perature and s o i l m oisture on th e in fec tio n o f is e e t potatoea by th e black ro t fungus* deer* Agr* See* 32s 1153-1140* 1726*
33# Hartman, H. and B u llis , 8* 1* In v estig a tio n s re la tin g to th e handlin g o f m ee t c h e rrie s v ltli sp e c ia l referenee to chem ical and phy sio log ical a c t iv i t ie s daring ripening* Ore* Agr. £hp* S ta . Bel* 247. m
immr
34# Hartwan, d* B. and Gaylord, F* C* XieM e f sweet po tatoes a s a ffec ted fey d*&* o f h a rv ii i t IVoc. Anar* dee* Hast* del* 42*J1A~5M* IM 9»
3»* Hgsptoe# «* l* Hts ...|MaMaM .m...lWMaMM...HiBi<* see TevkiI f ffiB'# ' .............................
17* X artesa, %* I# and fcebel, 1* E* O bservations on th e cracking c b e rrie a . H ee4 l i t 7 # * m . 1955*
30# B rener, F* <1* end G errie r, B* B* S lie r re la tio n s e f p lan t c e l ls and tissu es* Ann. Her. H i* fb y s io l. 1* 265-2SA. 1950.
If* L e v itt, J . PTost, drought, sad beat resistan ce* Aim* lev* F it* Physio l. I i m * m * IfSOU
BO* M « f J# S*f B eanter, M* T*, and A l te r s , B* Cracking kesplngSfeallty Forte Bteo sweet po tatoes ee IsflfeftwywHl fey r e t s o ff e s t i l i s s r , fittrefgan n i l s , M as, ***4 borax* Free* Aesr* See*lie rt. S c i. 54: 407-432* 1549*
H * McCormick, 1* A* Kotos on th e anatoay o f t i e young tu b er o f Xjraasaa bata ta s . 2en* Bot* Gas, 6 li 388-390. IfH *
9 4 P rie s tle y , #« 3* and VYbffenden, 4* H* Tbs bealing o f wounds in pota to tu b ers and th e ir propagation fey cu t se ts* Asm* Appl. Biol* l i t 96-115* 1m *
27* Pusqphiy, F* ?* an* H arris , I* Cracking o f Triumph p o ta to es. Anar* lo t* Jour* 26* 355-561. 1149*
28* aabw^ w . ^ 1 1^ O f l l g l B g l , 6rw *h * 4 ftm M w te.. » t t * -
m
29* Sakr, E. M, S ffec t o f cm y ie ld e f th e m ee t potato*t e r * See* Hart* ML. 4 i i 517-51S* 1943*
ing s k p e r te n t* . Beport Ml* Agr* See* 35* 215-220* 1950*
32* S in n o tt, I* V* The re la tio n a t g r a t e t e t e e In eacu rb it f r u i ts , t e r * t e r * Set* 32* 439445* 1941*
33* ie sd e e sr, 0* W* i t a t l s t l e a l Methods. t e a S ta te College te s a *Ath t i l t i m t lW H
34* S ta rk , F. 6* Factara gyaylA @f y»4ff ffyafl th * dvreiopiSIlta t ills in ner issssoarji l a pods a t t i t# #***§1 bean. M* S* T hesis. Bair* a t t e y t e d * IfAU
$5* S ta raaa , If* 1* M p o tato ea . da* Agr* t e * S ta . S a l, S3* 1S94*
37* ThoErpaon, S* C* cad S e a ttle , <f* H* Proximal dominance la eiieet pota toes* te e * Acer* See* Seri* Set* 2$i 270-275. 1931.
33* T b te r , L* I . A v a r ie ta l study e f th e a ^ a c e p tlh llity e f sweet t e r r ie s to cracking , i d t e Agr. lap* St*» M U 211* 1934.
39* F e rse r, 1* A phy sio log ical t e d ? e f cracking la Stayson Mtnessp apples* tear* Agr* Bee. 51* 191-222. 1935*
40, H iatd ogy e f **»!* f r a i t t 1!—** in re la tio n to cracking .JonrT i« r . Bm . 57i 8 1 3 - ttt. 1938.
41* o f spsoftteg la sweet c h e rrie s follow ing th euse o f e d e t e sp rays. te e * fa ir* See* t e t * Bel* 34s 271- 274. m
42* and B lodgett, 1* C« R iyeio log tcal s ta d ia s e f erael&agt e r r i e e . I d t e Agr* lap* Sts* M U l i t * 1931*
43* t e w , 4* %* and B ra s s , 14 B* B L t lleaf IM ctlK tessddLU , Co*, l e t m t £ t e ^ nrr.wir.OTmR
44*- M e te r, J* 1*. sod H arter, 1* 4* . t e d cork fc re a tio n l a th e m ee t p o ta to , tear* Agr* las* S it 437-447* 1921*
45* M ote , F* sad la a r ita e n , <?* 4* F actors l a th e incep tion and development o f fseariam ro t la sto red p o ta to es . 1* 3 . Dept. Agr* Tech* Bd* 62. 1923*
105
k%
Wmmr* H» 0# ftie w i axil prevention a t aocbsanioal injmiy of Hair* Agr* Ikp* Sio# BaJU 360# 1931*
aod M fc , 0* induction o f ol» IworOOOb tia o by roob
o f lobe cropI#
, I* 0* Apply bertK bo lappovo qptollby of m ob pobabets* • 0* Spoo* CAro* So# 1* JUptfel#
tfn iw eity of ItextaA# 19UMif Kaster e f Selene#, 1950.aa'fk fM&t Ildeeu&SlAiV'Alt wWr W *&pm4
P ub lications *
1* BMCfcttan, A* A* «x4 F* 0* S tark , ill?* A eeapatlaen o f sp rou tsm l irine em itinga f i r sweet po tato peedaetlo iu fraae* Penin. Horfc. Soc. (B ui. But, S t. Bd. B g rie .) 19 (1 » 9 ) i 34-37. 1950.
2# ..... .., ; . ..... ..... ..... . .. f& s ff ti a»^Ati% m istructural m M m m m : reeta of Maryland Goldenaral |« M |f OaNtilflEO Mtfoot B0t&&OeS 4UH re la te d t# CaNtelfelllEe fill PSNMMIJ
J* Scott, U I*» Stark, F* C«, Hattheim, V» A*, H-Kettan, A# A*Oglo, V* I* , and Duncan, A# A ifcegreee report on sweet potatocracking awperlistnAa* Isp th $i» Agr* See* l i t 2AW^0* 1950*
P osition s held*
fe tch in g #»a Hfff a p ^ A aelstsaat, Fetjad l e t U niversity , o fAgrles&hars, BapoptaaKdfc e f ^ i*ti*SB>1i'fefor ,p (V egetables) , l% ft i|ffi
2dfe*,MMifreer * asdMSlfcet atWL 92iBh<2 Bwmfcdipfe.iS'd sad tSdawsiMf aa&eaft ¥\ teeeaiwBsd9'9EiiuM*d9 st'dt- dJMPOSO SW WC4.f*r#A mj wl Wmwg iJtiffw, Jt yKTuMBB V w* WF«J^lLLvSr@,19A2- *
a
' ygafap^ i A ssistan t, IMivoraAty e f MaB^Aaad, iapsrhBM^t e f M orii- c u ltu re , 1951-52.