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Response of Brunswickgrass (Paspalum nicorae (Parodi)) to N Fertilization and Intense Clipping¹

A number of accessions of brunswickgrass, Paspalum nicorae (Parodi) have been introduced into the southeastern parts of the United States in recent years. The species is a tropical and subtropical forage species on which little research has been reported.

In this investigation the grass was fertilized with O, 112, 224 and 336 kg/ha N and clipped at 1-, 2-, 3-, 4-, 5-, and 6-week frequencies at approximately 3 mm height. Each increment of N increased forage production significantly but at a reduced rate. The forage yields increases as the clipping interval was lengthened from 1 to 6 weeks with the largest increase between the 2- and 3-week frequencies. Tillers per dm² and rhizomes per ha were not influenced by either N rate or clipping frequency. Roots per ha were reduced by the 1- and 2-week frequencies and at the lowest N rate. However, all treatments appeared to have sufficient roots to prevent deterioration to the sods.

Key Words: Tillers

² Professor; Superintendent, Americus Plant Materials Center, Americus; and Graduate Assistant, University of Georgia, Athens, respectively.

Received for publication October 11, 1969.