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Investigator: Unruh, T.

Organic tree-fruit pest management – (OREI)

Quantifying biological control of pear psylla in a cover crop system

SUMMARY Effects of an alfalfa cover crop on biological control of pear psylla and tree nutrition was assessed. The bullet points below summarize findings. Experimental…

Assessing effects of an alfalfa cover crop on biological control and tree nutrition in organic pear orchards

Organic pear growers must balance the conflicting pressures between nitrogen levels and densities of pear psylla, a nitrogen-loving pest of pears. We are assessing in…

Nitrogen Supply and Partitioning in Managed Understories of Organic Apples

Sustainable methods of nitrogen (N) fertility and weed management in organic production systems remain a challenge. Composted animal manures are commonly used to supply N,…