Publications by authors named "Pete Berry"

Article Synopsis
  • - Lolium multiflorum (Italian ryegrass) is found in Oregon as both a weed and a crop, and herbicide-resistant populations have developed due to chemical management practices.
  • - A glyphosate-resistant population identified in Yamhill County shows a nine-fold increase in resistance to glyphosate compared to a susceptible group, with no known amino acid mutations linked to resistance.
  • - The resistance is linked to a significant increase (30-fold) in copies of the EPSPS gene, marking the first instance of this type of genetic amplification in glyphosate-resistant L. multiflorum in Oregon.
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Background: Cabbage stem flea beetle (CSFB, Psylliodes chrysocephala L.) is a major pest of oilseed rape (OSR, Brassica napus L.) in the UK and low availability of effective chemical control has increased the need for integrated pest management approaches.

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Black leg (caused by and ) and chlorotic leaf spot (caused by ) are economically important fungal diseases of Brassicaceae crops. Surveys of seed fields and weed hosts were conducted to understand the distribution and prevalence of these diseases in Oregon after black leg and chlorotic leaf spot outbreaks occurred in Brassicaceae crops in 2014. Postharvest black leg ratings were conducted in seed fields of canola, forage rape, and turnip in 2015 and 2016.

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A substantial increase in grain yield potential is required, along with better use of water and fertilizer, to ensure food security and environmental protection in future decades. For improvements in photosynthetic capacity to result in additional wheat yield, extra assimilates must be partitioned to developing spikes and grains and/or potential grain weight increased to accommodate the extra assimilates. At the same time, improvement in dry matter partitioning to spikes should ensure that it does not increase stem or root lodging.

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