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Plant Pathology Journal
  Year: 2006 | Volume: 5 | Issue: 3 | Page No.: 322-328
DOI: 10.3923/ppj.2006.322.328
 
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Effect of Seed Treatments and Root Pathogens on Seedling Establishment and Yield of Alfalfa, Birdsfoot Trefoil and Sweetclover

Sheau-Fang Hwang, Heping Wang , Bruce D. Gossen , George D. Turnbull , Ronald J. Howard and Stephen E. Strelkov

Abstract:
Soil-borne fungal pathogens can reduce stand density in alfalfa (Medicago sativa), birdsfoot trefoil (Lotus corniculatus) and yellow sweetclover (Melilotus officinalis) by reducing seedling establishment and subsequent stand longevity. Fungicide seed treatments containing metalaxyl and fludioxonil were examined in inoculated greenhouse and field tests to determine their efficacy against seedling blight and root rot caused by Fusarium avenaceum and Rhizoctonia solani. Inoculation increased disease severity and reduced establishment, especially in field trials inoculated with Rhizoctonia solani. Under controlled conditions, fludioxonil (alone or in a formulation with metalaxyl) was effective against either pathogen in inoculated trials-seed treatment consistently increased seedling survival and reduced root rot on all three forage species. However, seed treatment had little impact on subsequent forage yield under field conditions. Metalaxyl alone was not efficacious. In fields with high pathogen populations, application of fludioxonil seed treatment on forage legume species could improve seedling establishment substantially.
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How to cite this article:

Sheau-Fang Hwang, Heping Wang , Bruce D. Gossen , George D. Turnbull , Ronald J. Howard and Stephen E. Strelkov , 2006. Effect of Seed Treatments and Root Pathogens on Seedling Establishment and Yield of Alfalfa, Birdsfoot Trefoil and Sweetclover. Plant Pathology Journal, 5: 322-328.

DOI: 10.3923/ppj.2006.322.328

URL: https://scialert.net/abstract/?doi=ppj.2006.322.328

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