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Johnsongrass (Sorgum halepense)
https://pested.osu.edu/node/402
disturbed, rich, bottom ground, particularly in cultivated fields. Leaf: Smooth lanceolate with a white mid ... vein, 5"-20" long. Stem: Smooth, pink to rusty red near the base. Flower: Large, loosely ...
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Perennial sowthistle (Sanchus arvensis)
https://pested.osu.edu/node/418
problem is…perennial sowthistle causes reduced crop yields and increases costs of cultivation. ...
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Russian knapweed (Rhaponticum repens)
https://pested.osu.edu/node/419
allelopathic. The problem is…Russian knapweed persists in cultivated fields when established and produces deep ...
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Grapevines, uncultivated & in groups > 100 (Vitus spp.)
https://pested.osu.edu/node/400
if they are growing in groups of 100 or more and are not maintained (pruned, sprayed, or cultivated ...
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Shatter cane (Sorghum bicolor)
https://pested.osu.edu/node/412
in height. Life cycle: Summer annual Habitat: Cultivated fields – especially cereal crops. Leaf: ...
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Russian thistle (Salsola Kali var. tenuifolia)
https://pested.osu.edu/node/411
Cultivated, fields, roadsides, railroad right-of ways, pastures, waste areas, irrigated areas, river bottoms, ...
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Canada Thistle (Cirsum arvense)
https://pested.osu.edu/node/397
aggressively. Hand-pulling and cultivation are often ineffective control mechanisms because new plants sprout ...
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Students of Agronomy, Soils and Environmental Sciences Spring Regional Meeting
https://hcs.osu.edu/news/sases24
Columbus, Ohio! Registration Registration has closed for this event. Canceled registrations after March ...
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We Grow Scientists! A COSI Community Event Returns for 2024
arrive for the event? No pre-registration is necessary. You're invited to stop in and join the fun ...
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Giant Hogweed (Heracleum mantegazzianum)
https://pested.osu.edu/node/399
growing 15'-20' in height in large clusters. Sap may cause servere skin irritation. Life cycle: ... blisters usually appear 15 to 20 hours after contact with the sap and sunlight. ...