Corn anthracnose can reduce yields
jgj NEWARK, Del Com last year and is now showing
** anthracnose was a problem up again
for many Delaware growers The early season leaf
AIR COMPRESSOR
SALES & SERVICE
CURTIS and
HAUSFELD
CHECK OUR SPECIAL DISCOUNTS
ON CURTIS AIR COMPRESSORS
ATTENTION DAIRYMEN:
★ Zurn Air Drying Equipment For Moisture
Free Air
★ Air Compressor Units Built To Your
Specifications
★ We Service Pneumatic Milking Systems
SCHRADER AIR
LINE EQUIPMENT
FOR STAUFFER PNEUMATIC WATER
SYSTEMS, DESIGN & INSTALLATION,
STAUFFER’S MACHINE SHOP
RD3, Ephrata, Pa. Phone; (717) 738-1516
Mile South of Rt. 322 on
Pleasant Valley Rd., Ephrata Exit New Rt. 222
DEALER INQUIRIES
INVITED
FARM - URBAN - COMMERCIAL BUILDINGS
SPECIALIZING IN COMPLETE SYSTEMS FOR HOG AND DAIRY
SCHULD BULK FEED BINS AND
MECHANICAL FEEDING SYSTEMS
From 3 Ton to 125 Ton Capacity
• Factory Built
• Factory Delivered
• Factory Erected
• High Pitch Top
• 60° Center Draw
MERVIN MILLER
★ SALES & SERVICE ★ BUILDERS OF FINE SYSTEMS
7 KEENER ROAD, LITITZ, PA 17543 717-626-5204
CALL US
SPECIALISTS IN CABLEVEY .
FEED CONVEYING AND AUTOMATION
AUTHORIZED DISH
Dealer for GINGWAY FREE STALLS
blight phase can occur as
early as June on lower
leaves of plants, says
University of Delaware
extension plant pathologist
Bob Mulrooney
The com seems to tolerate
the disease until it reappears
later m the season when
weather conditions are
favorable At that time it can
spread to the upper leaves
and as the plant matures,
black, shiny stalk rot
symptoms become visible
Depending on the variety
you’re growing, the fungus
causes yeild losses due to
reduced leaf areas, lodged
com, or light test weight
In general, says the
specialist, anthracnose is
favored by warm, wet wea
ther During the leaf blight
phase, the fungus causes
brown, oval to enlongated
lesions or spots about one
fourth to one-half inch in
diameter Their actual size
and shape will vary from one
hybrid to another
Yellow to yellow-orange
areas often surround the
spots
If you look at one of these
spots through a hand lens
you can often see spore
masses or fruiting bodies of
the fungus They appear as
very small black spines
rising from the surface of the
leaf
Without these black spines
FEED SYSTEMS
and without a hand lens,
anthracnose can h»'k very
much like several other
foliage diseases
The fungus overwinters
on com debris—especially
on the soil surface. The
disease can be more serious
under minimum tillage and
continuous corn There’s
some evidence that long
periods of low light intensity
and long exposure to high
humidity also intensify the
condition
Control measures are
being focused on the
development of resistant
varieties Many universities
and commercial seed comp
anies are working now to
incorporate better resis
tance to both the leaf blight
and stalk rot phases of the
disease
,iuie was a pro
oiem or becomes one on your
corn, it’s important to
plant the most resistant
variety available—espe
cially if you irrigate, since
this will certainly keep the
humidity high in fields
If you’re committed to
minimum tillage and are
having problems with the
disease, chop the stalks
and cover them with soil
after harvest to minimize
carry-over, or rotate
to another crop if possible
Or plant a resistant variety.
Even though the more
resistant hybrids sometimes
u
-K J
S N. IS
u 2 V* l|
x N r
S i * <^^
Lancaster Farming, Saturday, July 12,1980—C31
show signs of the disease,
they seldom incur yield
losses.
Look for anthracnose first
in fields which have been in
continuous com, in min-
Bradford Co. DHIA
(Continued from Page C 27)
Allen S Andrews
Dawn
Annabel
Polly
Easter
James A Van Blarcom
Kathy
Janet
GaryL Ritz
358
Hopps Hill Farm
Maybell
Gary Butcher
10
Ronald P Davis
Lila
Greland Farms
Lili
Ponder Hill Farms
Edson
Donald Jennings Jr
54
Lewis & Lois Alderson
Leda
Gerald W Twigg
50
36
Bill & Donna Earls
Nanette
Douglas Graybill
Pet
Harold Warner & Sons
Knoll
Vern
BruceA Andrian Sr
Mislucy
Jerry Pruyne
Elsbree Bros
18 8
29
Peck Hill Farms
17
Da/is Brothers
D 7
Abraham S Derstme
Tami
Duane & Patty Cole
Lois
Charles Allen
30 G
Robert H Peters
Delta
Ethel
Stuart Wnsley
15
Madigan Farms
Ins
Mi VENTILATING
/
0 A
imum tillage, or where the
disease was present last
year You’re most likely to
find symptoms after long
oenods of heavily overcast
ir rainy weather
23,406
25,322
20,509
21,131
305
305
303
305
300
305
16,045
15,409
305
14,899
305
14,087
305
15,053
305
20,775
305
21,426
305
19,010
305
18,803
305
20,099
304
305
14,006
14,181
305
15,901
305
18,813
305
305
18,012
18,766
305
14,474
305
18,173
305
305
21,322
20,702
305
19 045
305
17,945
305
24,362
305
16,397
305
18,854
305
305
23,253
19,768
305
19,773
305
19,126
KM THE BALANCED DNTT
k
763
805
823
711
761
609
702
755
760
739
711
825
642
629
790
707
725
749
737
757
945
833
769
767
632
730
735
948
806
795
814