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United States Department of Agriculture

Agricultural Research Service

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Research Project: Production Practices to Improve the Height and Limit Root Rot on Pardina Lentils

Location: Grain Legume Genetics Physiology Research

Project Number: 2090-21220-001-06
Project Type: Trust

Start Date: Jul 01, 2010
End Date: Dec 31, 2014

Objective:
The purpose of the present research is to identify production practices that will reduce root rot and improve the height of Pardina lentils. Production practices such as treating seed with fungicides, micro-nutrients, nitrogen-fixing bacteria or growth promoters and foliar applications of strobilurins or phosphorus-based acids will be assessed individually or in combinations for their efficacy in reducing root rot and improving lentil height and yield. Root rotting fungi will also be isolated from the lentil root systems of field plants and identified to species.

Approach:
Field trials for this research will be conducted in commercial lentil fields in Washington or Idaho. Six-row research plots measuring 7’ by 20’ will be arranged in a randomized complete block design with four replications of each treatment. The lentil cultivar Pardina will be used in all the research plots at a rate of 40 lb/acre. Twenty seed/foliar treatments (listed below) will be evaluated. Stand counts will be determined two weeks after planting to assess the impact of these treatments on plant germination. Root disease severity, root nodulation and plant height of twenty plants within each treatment plot will be assessed at bloom. Yield will be determined by harvesting a center section from each plot (four rows of ten feet). Trials will be established in two commercial fields per season. Products that are highly effective in increasing lentil height and reducing root rot in the field will be tested against specific pathogens under greenhouse conditions. Plants will be grown in individual planter cones arranged in a randomized complete block design with four replications. A replication will consist of five individual plants. Plants will then be inoculated with the two most common root rotting pathogens isolated from the lentil roots from the field trials, and the efficacy of the individual treatments will be assessed based on root rot and plant height.

Last Modified: 11/27/2014
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