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Cornell University

Cover Crop Guide for NY Growers

Dr. Thomas Björkman, Cornell AgriTech

Weed suppression in spring

Plots were photographed on May 1, 2008

Fallow-may

Fallow ground was covered with shepherd’s purse and chickweed, both making seeds.

 

Bonar-may

‘Bonar’ forage rape had almost decomposed, but there were virtually no weeds. The ground below was in excellent condition.

Appin-may

‘Appin’ forage turnips had decomposed except for short (3 inch) pieces of stem. There were virtually no weeds.

Pasja-may

‘Pasja’ forage turnips¬†survived partially, but not enough to be useful for organic matter production or further weed suppression. All the surviving plants were ones that did not bulb in the fall.

 

Tilney-may

‘Tilney’ mustard had standing straw about 18″ tall. There were few weeds, mostly annual bluegrass.

Wheat-may

Wheat was weed free and growing vigorously. Not heading yet, about 14″ high.