Onion Seed Yield as Affected by Pink Root Disease, Soil Fumigation, Mother Bulb Fertilization and Bulb Size1

Open Access
Publisher Website
Google Scholar
Abstract
Pink root, a soil-borne disease caused by the fungus Pyrenochaeta terrestris, reduced onion seed yield in paired comparisons of soil blocks fumigated for pink root control versus non-fumigated soil blocks infested with pink root Bulbs that had been produced on pink root free soil when planted for seed production on pink root infested soil developed only slight infection late in the season and produced no less seed than similar bulbs planted on fumigated soil. Bulbs of cultivars resistant to pink root also developed only mild infection late in the season when planted for seed production on pink root infested soil with no loss in seed yield as compared to those on fumigated soil. Mother bulbs from fields properly fertilized may produce more seed than bulbs of the same size from poorly fertilized fields.

This publication has 0 references indexed in Scilit: