The influence of growth stage and mowing on competition between Paspalum notatum and Imperata cylindrica [cogongrass; bahiagrass; weed]

Willard, T.R.; Shilling, D.G. . Dept. of Agronomy

The influence of growth stage and mowing on competition between Paspalum notatum and Imperata cylindrica [cogongrass; bahiagrass; weed]

1990

Willard, T.R. | Shilling, D.G. (Florida Univ., Gainesville (USA). Dept. of Agronomy)

In greenhouse experiments, cogongrass was more competitive than seedling bahiagrass but much less competitive than established bahiagrass. Mowing slightly increased the relative competitiveness of established bahiagrass. When grown in pure stand, 2 mowings caused an 8 percent and 21 percent decrease in the foliage weight of cogongrass and established bahiagrass, respectively. However, when the 2 species were grown in a 50:50 mixture, 2 mowings caused a 45 percent and 13 percent decrease in the foliage weight of cogongrass and bahiagrass, respectively. These data indicate that under conditions of no nutrient or water stress cogongrass effectively competed with seedling bahiagrass but not with established bahiagrass.

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