Growth models for Salvinia molesta

Growth models have been developed using data from recent greenhouse studies on the effects of nitrogen, phosphorus and temperature on growth rates of Salvinia molesta Mitchell. Linear transformations were used for estimating Michaelis-Menten kinetic constants and a significant fit of the data was obtained. This has been confirmed by a comparison with field data. The growth models can be used for predicting the potential for Salvinia to remove nutrients from natural and polluted waters. Values thus obtained have a direct bearing on the design and costing of waste-water treatment ponds using Salvinia. Also, by predicting growth rates at particular temperatures and nutrient levels, the likelihood of successful control by biological agents can be assessed.