VegNet Vol. 14,
No. 9.
On the WEB at: http://vegnet.osu.edu
In This Issue
1. Crop Reports
2. Strawberry –
Anthracnose fruit rot
Crop Reports by Brad
Bergefurd and Hal Kneen
Weather in the area has been dry with just over a half an inch in
the past 25 days at the Piketon Research and
The first direct seedings of Processing Pickles
for machine harvest were planted in fields in the
Harvest of plasticulture strawberries
began last Friday May 4th.
Cabbage and broccoli planted early has made good growth this last week.
Fresh market tomato planting has been at a rapid pace this week. New
growth is evident on these early market tomatoes that were planted seven to ten
days ago. Fruit on high tunnel tomatoes are about the size of golf balls.
Some early planted radishes are being harvested, bunched and sold at
wholesale produce auction.
Fresh Market Pepper planting has begun this week with irrigation being run due to dry
soil conditions. Sweet corn planted very early in April is now at the 4
leaf stage in open fields and corn planted under plastic in March is 1 to 1.5
foot tall with plastic being slit open and holes punched to allow heat to
escape on sunny and warm days.
Melon, summer squash and cucumber crops have been transplanted this last
week in open fields and floating row covers with wire hoops have been applied
to speed growth and development also zip tunnels are being used to trap
nighttime heat and to allow ventilation during the day.
Snap Peas have been staked and are being tied weekly.
Fields continue to be worked, fertilizer spread, raised beds formed, plastic
mulch and trickle irrigation being laid, spraying herbicides and planting of
vegetable crops continues.
Meigs county
Planting of tomatoes, peppers and sweet corn continues. Older
plantings of tomatoes in the ground two weeks are beginning to bloom.
Temperatures into the 70's, 80's and even the nineties in the past two weeks
and night temperatures consistently over 50, most nights closer to 60.
Colorado Potato beetles and flea beetles insect populations are
being sighted in the tomato fields. Upon inspection clusters of the
Strawberry
– Anthracnose fruit rot –Disease
Update by Andy Wyenandt,
Ph.D., Specialist in Vegetable Pathology. From Plant and
Strawberry
anthracnose can be extremely destructive during warm, wet weather causing
significant fruit rot. Symptoms of Anthracnose include blackish-brown circular
spots on maturing green fruit and soft, sunken (flat) circular lesions on ripe
fruit. On ripe fruit, lesions can expand rapidly and are often covered with a
pinkish-orange spore mass. Spores are spread from infected to healthy fruit
with splashing water. Control of Anthracnose always begins with a 7 to 10 day
preventative spray program no later than 10% bloom and/or prior to disease
development.
For
control apply the following combinations:
#1) captan (M3) at 4 lb 50WP/A plus Pristine (pyraclostrobin+ boscalid, 11 + ) at 18.5 to 23.0 oz 38WG/A
#2) captan 5(M3) at 4 lb 50WP/A plus Abound (azoxystrobin,11) at 6.2 to 15.4 oz 2.08F/A, or Cabrio
(pyraclostrobin, 11) at 12 to 14 oz 20EG/A
#3) Captevate (captan + fenhexamid, M3 + 17) at 3.5 to 5.25 lb 68WDG/A
For
subsequent applications, alternate:
captan (M3) at 4 lb 50WP/A plus Abound
(azoxystrobin, 11) at 6.2 to 15.4 oz 2.08F/A, or
Cabrio (pyraclostrobin,
11) at 12 to 14 oz 20EG/A with captan (M3) at 4 lb
50WP/A, or
Captevate (captan + fenhexamid, M3 + 17) at 3.5 to 5.25 lb 68WDG/A
To help
manage fungicide resistance development, do not make more than 2 consecutive
applications of either Pristine (pyraclostrobin
+ boscalid, 11 + 7), Cabrio
(pyraclostrobin, 11) or Abound/Quadris
(azoxystrobin, 11) before switching to another
fungicide chemistry