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C O N T E N T S
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 Supported, in part, by the National Science Foundation - Division of Undergraduate Education
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Copyright © 1997-2000
Thomas R. Warne and
Leslie G. Hickok.
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 C-Fern Web Manual - Sporophyte Culture

 
Hermaphroditic and male C-Fern gametophytes
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Fertilization

A low rate of fertilization is required for Ceratopteris and most other ferns. We achieve good growth and fertile frond production with PETERS (R) POINSETTIA FINISHER 15-20-25. Feed rates depend on pot volume and are 100 ppm nitrogen per week for small cups, i.e. , ca. 22 ml per week of a 1/2 tsp per gallon solution and 200 PPM nitrogen per week for 68 inch pots, i.e. ca. 120 ml per week of a 2 tsp per gallon solution. Different feed rates will give different levels of fertile versus vegetative frond production.