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Tifway Bermudagrass Response To Potassium Fertilization

Soil and Water Science Dep., Univ. of Florida, P.O. Box 110510, Gainesville, FL 32611

View larger version (63K): [in a new window]   Fig. 1. Effect of K application on growth rate of Tifway bermudagrass during 1997 and 1998. Single degree of freedom contrasts were generated with the SAS GLM Proc. *, *** at P 0.05 and P = 0.001 and nonsignficant (NS) at P > 0.05. Rest refers to the average of treatment means larger in magnitude than the one in the contrast.

View larger version (45K): [in a new window]   Fig. 2. Effect of K application on Tifway bermudagrass tissue K concentration during 1997 and 1998. Single degree of freedom contrasts were generated with SAS GLM Proc. *** and nonsignificant (NS) at P 0.01 and P > 0.05, respectively. Rest refers to the average of treatment means larger in magnitude than the one in the contrast.

View larger version (53K): [in a new window]   Fig. 3. Effect of K application on Tifway bermudagrass root dry weight during 1998. Single degree of freedom contrasts were generated with SAS GLM Proc. Nonsignifant (NS) at P > 0.05. Rest refers to the average of treatment means larger in magnitude than the one in the contrast.

View larger version (35K): [in a new window]   Fig. 4. Effects of sampling month on Tifway bermudagrass root dry weight in 1998. Single degree of freedom contrasts were generated with SAS GLM Proc. *** at P 0.01 and nonsignificant (NS) at P > 0.05.