Title: Peach and nectarine varieties and selections at Monticello, Florida in 1967
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Title: Peach and nectarine varieties and selections at Monticello, Florida in 1967
Physical Description: Book
Creator: Young, H. W.
Publisher: Big Bend Horticultural Laboratory, University of Florida
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Bibliographic ID: UF00076526
Volume ID: VID00001
Source Institution: University of Florida
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BIG BEND HORTICULTURAL LABORATORY I
Monticello, Florida OCT 27 137

Big Bend Hort. Lab. Mimeo Report 68-1 October i10, 1967 .


PEACH AND NECTARINE VARIETIES AND SELECTIONS AT MONTICELLO, FLORIDA IN 1967.

by H. W. Young

This is a report on peach and nectarine varieties and advanced selections at
Monticello in 1967.

Yields. The 1967 records (summarized in Table 1) were taken on fruit that
was considered nearly ripe. They would have been harvested about two days earlier
if they had been picked for commercial shipment. In comparing yields of any two
varieties, age of tree should be considered. The age of tree is listed in the
table as the number of years the tree has been in the orchard and includes 1967.
For example, a tree planted in February 1964 is listed as 4 years of age.

Fruit Characteristics.- At each harvest ten representativeesound fruit were
measured and these measurements averaged at the end of the season for each tree and
variety. (Table 2). The beak orpoint at the bottom end of the fruit, even though
quite small, is listed because some varieties exhibit a tendency to have a promi-
nent beak in some years.

Chilling Hours.- The number of hours of temperature at or below 45 degrees F.
after October 1, 1966, in the winter of 1966-67 were: 517 before January 15; 622
before January 31; 776 before February 15; and 886 before February 28. There ap-
peared to be sufficient cold temperatures to satisfy the chilling requirements of
all varieties.

Late Spring Freezes.- Low temperatures in the early spring reduced the yields
on all medium to low chilling varieties. This year emphasized the fact that varie-
ties with too low chilling requirements are very apt to flower too early and there-
by lose most of the young fruit in late spring freezes. Temperatures that affected
fruit set were 310 on March 17, 190 on February 26, 200 on February 27 and 290 on
February 28.

Fruit Thinning.- On the most part, fruit thinning was not necessary this year
because of the late spring freezes, however, those varieties that had sufficient
fruit were thinned adequately and fruit size was satisfactory.

Fertilization.- Approximately 750 pounds per acre of 10-10-10 was broadcast
in the spring of 1967. Neutral Zinc was applied as a foliage spray.

Diseases, Insects, and Spray Program.- Scab was present, but was not con-
sidered serious. Bacterial spot was insignificant. Brown rot was not a problem
this year. Stink bugs and other insects that cause misshapen fruit were at a low
level. Only small isolated incidences of White Peach Scale was evident. The spray
program used consisted mainly of parathion and sulphur. Two trunk applications of
dieldrin was applied after harvest for borer control.

iAssociate Horticulturist and Head.

HWY
300 cc
________________________________________ ____ in 1 In1 -----TM-










Table 1: Peach and Nectarine yield, bloom, foliage break and harvest at
Monticello, Florida, in 1967.


Variety Age No. First Average per tree
or of of Foliage Full Ripe No of Wt. in Ave. Wt.
Selection1 Tree Trees Break Bloom Fruit Fruit Lbs. per fruit


I


INumbers with no letter Gainesville
Q Quincy
M Monticello


F Fresno
FV Fort Valley
A Texas


- --- I


Springtime 3 2 3/8 3/8 5/9 505 48.5 .096
Earligold 3 2 3/8 2/20 5/9 342 38.2 .111
Earligold 4 3 2/20 3/2 5/11 188 24.3 .129
FV9-266 4 2 3/9 3/9 5/15 52 11.8 .227
Q310-7(Q46) 3 4 3/10 3/10 5/15 153 26.0 .170
Junegold 3 2 3/8 3/8 5/19 46 10.0 .217
94-61 2 1 2/15 2/20 5/19 36 4.7 .130
90-55 2 1 3/8 2/15 5/19 45 4.5 .100
97-48 4 2 2/20 3/3 5/25 22 5.8 .263
Maygold 3 10 3/13 3/13 5/30 333 78.1 .232
Maygold 4 10 3/13 3/13 6/2 309 73.3 .237
83-48 4 2 2/20 2/22 6/1 73 13.5 .185
Flordahome 3 1 3/8 6/7 61 12.3 .201
Meadowlark 3 2 3/8 3/8 6/7 253 40,3 .159
Al80-10 4 1 6/7 40 5.5 .137
A-188-29 4 1 6/7 28 4.4 .157
A181-176 4 1 6/7 17 2.5 .147
69-83(n) 4 3 2/20 2/20 6/7 30 8.6 .286
Flordaqueen 3 2 3/9 3/3 6/7 7 2.8 .400
F83-16 4 7 2/20 2/22 6/7 29 7.2 .251
M302-40 4 1 2/20 2/22 6/7 7 1.8 .257
M302-38 4 1 2/20 3/10 6/7 27 7.5 .277
40A21 4 1 2/3 2/13 6/7 8 2.2 .275
95-16 4 3 2/6 2/20 6/7 6 2.0 .333
Bonita 3 2 3/10 3/5 6/7 25 8.0 .320
Q303-24(Q42)n 3 4 3/10 3/10 6/12 95 17.4 .183
Q303-24(Q42)n 4 8 2/20 2/20 6/10 9 2.8 .311
Suwannee 3 1 3/8 6/16 32 11.1 .346
Q303-3(Q44)n 3 4 3/10 3/10 6/16 114 15.3 .134
Q303-4(Q45)n 3 4 3/10 3/10 6/16 106 23.1 .218
FV323-12 4 4 3/29 3/9 6/16 84 27.8 .331
73-25 4 1 2/10 2/20 6/16 9 3.5 .388
Q301-13n 4 6 2/13 2/20 6/16 4 1.3 .325
Q313-22(Q43)n 3 4 3/10 3/10 6/22 72 17.9 .248
Q516-34(Q41)n 3 4 3/10 3/10 6/22 84 14.6 .173
Q304-3 4 1 2/10 2/20 6/22 9 2,0 .222
Q314-2n 4 4 3/9 3/1 6/22 29 11.6 .400
Q313-22(Q43)n 4 4 3/9 3/9 6/22 15 5.7 .380
Sunhigh 3 2 3/29 3/15 6/27 6 1.8 .300
Saturn 3 1 3/8 3/8 6/27 179 34.8 .194
Jo fruit was harvested from the following 3 year old trees:Flordawon,Q209-31,26-43.
No fruit was harvested from the following 4 year old trees:F81-79,M302-39,
M302-41,Rochon,9-67,72-22,73-47,73-96,F82-15,Q314-21,Q314-12n,F55-74,11-711-26.


j











Table 2: Fruit characteristics of peach and nectarine varieties and selections
at Monticello, Florida, in 1967.


Variety Age Cling Beak
or of Percent Fruit Measurement in inches Flesh or Length
Selection1 Tree Overcolor Dia.w' Diav" Length Color Free in MM

Springtime 3 61 1.590 1.684 1.893 W C1 8
Earligold 3 58 1.643 1.680 1.821 Y C1 4
Earligold 4 45 2.026 1.979 2.180 Y C1 4
FV9-266 4 70 2.293 2.287 2.400 Y F 5
Q310-7(Q46) 3 62 2.004 2.094 2.155 Y Cl 3
Junegold 3 60 2.206 2.287 2.537 Y C1 10
94-61 2 75 2.087 2.137 2.137 Y F 3
90-55 2 75 1.737 1.862 1.937 Y F 3
97-48 4 70 2.246 2.359 2.403 Y C1 4
Maygold 3 75 2.283 2.370 2,502 Y C1 6
Maygold 4 75 2.309 2.404 2.557 Y C1 6
83-48 4 70 2.272 2.331 1.956 Y C1 3
Flordahome 3 60 2.112 2.262 2.525 W F 10
Meadowlark 3 74 1.979 2.107 2.099 Y F 4
A180-10 4 80 1,900 1.875 2.012 Y F 4
A188-29 4 75 2.050 2.025 2.125 Y F 4
A181-176 4 75 1.975 1.950 2.075 Y C1 5
69-83n 4 77 2.487 2.552 2.354 Y F 0
Flordaqueen 3 40 Y F-C1 4
F83-16 4 75 2.308 2.346 2.385 Y F 4
M302-40 4 70 Y F 3
M302-38 4 67 2.437 2.487 2,487 Y F 5
40A21 4 70 Y F 1
95-16 4 50 2.450 2.425 2.512 Y F 5
Bonita 3 50 2.381 2.712 2.631 Y Cl 3
Q303-24(Q42)n 3 85 1.982 2.078 2.013 Y F 1
Q303-24(Q42)n 4 85 2.431 2.512 2.425 Y F 1
Suwannee 3 75 2.500 2.550 2.662 Y F 7
Q303-3(Q44)n 3 73 1.873 2.020 2.062 W F 1
Q303-4(Q45)n 3 80 2.118 2.153 2.162 Y F 1
FV323-12 4 74 2.661 2.714 2.710 Y F 6
73-25 4 75 Y F 6
Q301-13n 4 75 Y F 1
Q313-22(Q43)n 3 74 2.148 2.268 2.246 Y F 2
Q516-34(Q41)n 3 83 1.983 2.020 1.996 Y F 2
Q304-3 4 70 Y F 2
Q314-2n 4 60 2.632 2.786 2.824 Y F 2
Q313-22(Q43)n 4 73 2.642 2.728 2.622 Y F 1
Sunhigh 3 Y F -
Saturn 3 40 2.025 2.125 2.212 Y F 6

*-Diameter at right angle to suture.
'** Diameter through the suture.

1Numbers with no letters Gainesville F Fresno
Q Quincy FV -Fort Valley
M Monticello A Texas




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