Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd...
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![Page 1: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/1.jpg)
Signs and symptoms of damage of nematodes on vegetable and
small fruit crops
Nematode Workshop 2nd Morning Session
George S. Abawi and Beth K. Gugino
Department of Plant Pathology
![Page 2: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/2.jpg)
General field symptoms includeGeneral field symptoms include
Reduced growth
Yellowing of foliage (nutrient deficiency-like)
Excessive wilting in hot or dry weather
Reduced yields
Poor quality produce Symptom severity
are nematode density dependent.
![Page 3: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/3.jpg)
Accompanying root symptoms includeAccompanying root symptoms include
Galls, stubby roots, excessive branching
Necrotic lesions and general discoloration
Rots
Ditylenchus destructor Meloidogyne hapla
![Page 4: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/4.jpg)
Most important nematodes on vegetables in the NortheastMost important nematodes on vegetables in the Northeast
Northern root-knot Meloidogyne hapla
Root-lesion Pratylenchus penetrans
Cyst nematodes Heterodera schachtii
Globodera rostochiensis
![Page 5: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/5.jpg)
Northern Root-Knot Nematode (Meloidogyne hapla) on CarrotNorthern Root-Knot Nematode (Meloidogyne hapla) on Carrot
![Page 6: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/6.jpg)
No Vydate at plantingNo Vydate at planting
Vydate applied at plantingVydate applied at planting
![Page 7: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/7.jpg)
Symptoms of NRKN infection on young and mature carrots
![Page 8: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/8.jpg)
MarketableMarketable UnmarketableUnmarketable
0 1 2 3 4 5
![Page 9: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/9.jpg)
Northern Root-Knot and Lesion Nematode Damage on Onion
Northern Root-Knot and Lesion Nematode Damage on Onion
infested not infested
![Page 10: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/10.jpg)
Symptoms of nematode infestation in an onion fieldSymptoms of nematode infestation in an onion field
![Page 11: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/11.jpg)
Meloidogyne hapla
![Page 12: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/12.jpg)
Galls on roots
Thick neck and reduced bulb size
Close-up of root-knot nematode damage on onion roots
![Page 13: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/13.jpg)
Root-lesion nematode (Pratylenchus penetrans) in an onion root
eggs
juveniles
![Page 14: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/14.jpg)
Pratylenchus penetrans
Lesions on soybean root
![Page 15: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/15.jpg)
Northern Root-Knot Nematode (Meloidogyne hapla) on Lettuce
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Healthy lettuce plantsStunted and uneven growth due to nematode infection
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Galls on lettuce with stained egg sacs
Galls on lettuce root system
![Page 18: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/18.jpg)
Nodulation on cloverhttp://starklab.slu.edu/Bio2000/clover
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Symptoms of a heavy nematode infestation in a potato field
![Page 20: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/20.jpg)
Golden Potato Cyst Nematode (Globodera rostochiensis)
Photo credit: Christopher Hogger, Swiss Federal Research Station for Agroecology and Agriculture, Bugwood.org
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Lesions from P. penetrans infection on potato tubers
Lesions from P. penetrans infection
on potato roots
![Page 22: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/22.jpg)
Root-knot
![Page 23: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/23.jpg)
Potato early dying disease (PED)Potato Early Dying Disease (PED)
(Pratylenchus penetrans + Verticillium dahliae)
![Page 24: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/24.jpg)
No galls develop on the primary roots
![Page 25: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/25.jpg)
Northern Root-Knot Nematode (Meloidogyne hapla) galls on the fine potato roots
![Page 26: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/26.jpg)
Severe damage to potato by M. hapla
![Page 27: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/27.jpg)
Sugar beet cyst nematode (Heterodera schachtii) damage in a beet field
![Page 28: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/28.jpg)
Sugar beet cyst nematode on beet
seedling roots
female cystfemale cyst
![Page 29: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/29.jpg)
Lifecycle of Heterodera schachtii
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Sugar beet cyst nematode (Heterodera schachtii) damage in cabbage microplot trial, NYSAES, 1983
UninfestedInfested with H. schachtii
![Page 31: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/31.jpg)
Roots of cabbage grown in soil heavily infested with H. schachtii (right) vs. uninfested soil (left)
Small loose cabbage head
from plant grown in soil
heavily infested with H. schachtii
(right) vs. uninfested soil
(left)
![Page 32: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/32.jpg)
Yield of cabbage grown in heavy textured soil infested with increasing densities of sugar beet cyst nematode (Heterodera schachtii), NYSAES, 1983
Fumigated 10 eggs/cc 20 eggs/cc 40 eggs/cc
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Tomato roots grown in uninfested (left) and soil infested (right) with Meloidogyne hapla
![Page 34: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/34.jpg)
UF factsheet
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UF factsheet
![Page 36: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/36.jpg)
Root-knot nematode (Meloidogyne spp.)
damage on bean in the field and severe galling on
the roots.
![Page 37: Signs and symptoms of damage of nematodes on vegetable and small fruit crops Nematode Workshop 2 nd Morning Session George S. Abawi and Beth K. Gugino.](https://reader036.fdocuments.in/reader036/viewer/2022062421/56649d9f5503460f94a89f13/html5/thumbnails/37.jpg)
Stubby root nematode (Paratrichadorus christiei) damage
on corn roots