Influence of Mechanical Damage and Fungicide Seed Treatments on Germination and Stand with Cottonseed1
- Janet A. Green and
- Earl B. Minton2
Mechanical damage to the seed coat of cotton (Gossypium hirsutum L.) seeds may occur during harvesting, ginning, and processing. The extent of damage vanes considerably among seed lots and it is impossible to remove all damaged seed while processing seed for planting. Fungicide-treated and non-treated seed with damaged seed coats germinate slower and produce poorer stands than seed with nondamaged seed coats. The percentage germination at standard temperatures in the laboratory and the stands and seedling growth in the greenhouse were inversely related to the extent of damage to the seed coat of acid-delinted cottonseed. Scratches or cracks in the seed coats that did not expose the embryonic tissues adversely affected germination and stand less than did damage that exposed the embryonic tissues. Coating cottonseed with fungicides improved the performance of all seed classes, but the most improvement was obtained from seed with a damaged seed coat. However, no fungicide treatment completely compensated for the damage to the seed coat.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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