This Seasons Challenges Slide 2 Powdery mildew on rosemary Pests
in apple orchard Crop-nibblers: slugs & beetles Blight in
tomatoes Slide 3 Powdery Mildew on Rosemary PROBLEM - In winter
rosemary plants in hoop house infected with powdery mildew. Powdery
Mildew on Rosemary Slide 4 Rosemary a Mediterranean plant Likes
temp and humidity Rosemary overwintered in hoop house with plastic
row covers Covers maintain temp above freezing but also humidity
Ideal conditions for fungal growth Slide 5 Powdery Mildew on
Rosemary Economic Impact Cut rosemary sold to restaurant supplier
at $5.50 per lb At current rate of 120 lb/mo, monthly rosemary
income $1,350 Rosemary plants also sold at $15 per flat, but market
variable (and as yet largely untested, due to fungus) Maximum
possible loss from fungus if entire crop destroyed: = $1,500 per
month Slide 6 HYPOTHESIS - Powdery mildew might be controlled by:
1.Changing watering methods 2. air circulation around plant leaves
3. Anti-fungal sprays i.Sulfur-lime ii.Serenade iii.Baking soda
Powdery Mildew on Rosemary Slide 7 Outside Fan Sulfur-lime spray
Serenade spray Sodium bicarbonate spray Seven different conditions
(60 plants each): Bottom-up Watering Control Powdery Mildew on
Rosemary Slide 8 The Greenhouse S U N S I D E S H A D O W S I D E
SER 3 CON 3 BAS 3 B-U 3 FAN3 FAN 4 FAN 1 FAN 2 BAS 1 SUL 1 SER 1
CON 1 B-U 2 B-U 1 SUL 2 BAS 2 SER 2 CON 2 OUT 3 OUT1OUT1 OUT 2
OUT4OUT4 SER 4 CON 4 SUL 4 BAS 4 SUL 3 B-U 4 ROSE- MARY PLANTS
ROSE- MARY PLANTS OPEN GH-FAN FAN Powdery Mildew on Rosemary Slide
9 Results: Slide 10 Powdery Mildew on Rosemary Results: Powdery
Mildew on Rosemary Slide 11 Pests in the apple orchard Orchard on 1
acre slope Cultivars: Liberty, Pristine, Williams Pride, Priscilla,
Redfree, Goldrush, Jonafree & Prima, (resistant to scab, fire
blight and powdery mildew) Rootstocks: Most cultivars planted on
M.7 rootstock (resistant to fire blight and root diseases) Pests in
the apple orchard Slide 12 Apple Moths Tufted Apple Bud
MothOriental Fruit Moth Codling MothOblique-banded Leaf Roller
Slide 13 Apple Moths Pheromone traps for each moth in orchard
Number of moths counted each week Entrust, Dipel and Surround
sprays timed accordingly Pests in the apple orchard Slide 14 Apple
Moths Pests in the apple orchard Slide 15 Comparison of Kretschmann
Farm data with PSU Experiment Station data Apple Moths Pests in the
apple orchard Slide 16 Apple Maggots Plum Curculio Mites Dormant
oil spray used in spring to reduce mite eggs Other pests in apple
orchard European Apple Sawfly Sticky red spheres placed in orchard
to attract maggots Slide 17 Crop nibblers: Slugs Dont cause
significant crop losses in mature plants, but have caused cosmetic
damage to large proportions of several crops (lettuce, basil,
cabbage, radicchio) CSA subscribers are more forgiving of produce
imperfections than wholesale markets, but Don wants to provide high
quality produce to all customers The solution to slug-nibbled
cabbage: SAUERKRAUT! Slide 18 Crop nibblers: Japanese beetles
Population grew in end of July Most prevalent in basil patch
Pheromone traps installed for control Slide 19 Crop nibblers: Flea
beetles Primarily affect mesclun, but also many other crops Row
cover reduce damage Stunt growth of seedlings and give mature
plants lacy look Seedlings dusted with rotenone Eggplant no longer
planted because of severe infestation Slide 20 Blight on tomatoes
Slide 21 - Cool, wet summer: ideal conditions for blight spread -
Began spraying copper hydroxide as preventative in early July -
First signs of blight in mid-July: mix of early and late blight? -
Poses significant threat to tomato crop and to potatoes if spreads.
Thus far it has stunted some plants but not visibly damaged yields
Slide 22 Slide 23
