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United States Department of Agriculture

Agricultural Research Service

Research Project: ASSESSING THE DAMAGE POTENTIAL OF THE ROOT LESION NEMATODE PRATYLENCHUS PENETRANS ON RASPBERRY VARIETIES

Location: Horticultural Crops Research

Project Number: 5358-12220-004-13
Project Type: Reimbursable

Start Date: Oct 01, 2011
End Date: Sep 30, 2013

Objective:
1) Evaluate P. penetrans population dynamics and fruit yield in existing fields of raspberry varieties ‘Meeker’, ‘Chemainus’, ‘Saanich’ and ‘Cascade Bounty’. 2) Evaluate plant growth, nematode population densities, and yield in plots within fumigated and non-fumigated sections of newly planted fields. 3) Extend knowledge developed above to the raspberry growing community through field days, commission newsletters, and extension publications.

Approach:
In established red raspberry fields, a post-plant nematicide will be applied to replicated plots to suppress P. penetrans. We will determine soil physical and chemical properties, including percentage clay, loam, organic matter and sand, and soil pH. We will sample roots and soil in treated and non-treated plots twice per year to document P. penetrans population dynamics (in soil and roots), and we will evaluate plant growth (cane height and pruning weights) and plant yield (three or four harvests per summer) in the same plots. In addition, P. penetrans-infested fields scheduled for fumigation and replanting will be identified. Fumigated and non-fumigated areas within these fields will be established and raspberries will be planted within each area in which to monitor nematode population dynamics and plant parameters on different varieities. In another field, we will establish replicated small plots of ‘Meeker’, ‘Chemainus’, ‘Saanich’ and ‘Cascade Bounty’ in the fumigated area, and similar replicated plots in the non-fumigated area. We will evaluate P. penetrans in roots and soil, plant growth and plant yield as described above. All findings will presented to growers through field days, publications, and workshops. Upon conclusion of this project an IMP recommendation fact sheet will be prepared.

Last Modified: 8/21/2014
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