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Nitrogen Use in Tifway Bermudagrass, as Affected by Trinexapac-Ethyl

^a Dep. of Horticulture, Forestry, and Recreation Resources, Kansas State Univ., 2021 Throckmorton, Manhattan, KS 66506-5507
^b Crop Science Dep., North Carolina State Univ., 100 Derieux St. Box 7620, Raleigh, NC 27695-7620

View larger version (17K): [in a new window]   Fig. 1. Clipping production of trinexapac-ethyl (TE) treated Tifway bermudagrass, as a percentage of the nontreated check (indicated by a dashed line). The TE and N applications are indicated by arrows. Significant effects (P = 0.05) of TE for each clipping collection date are indicated by asterisks.

View larger version (20K): [in a new window]   Fig. 2. Bermudagrass weekly evapotranspiration (ET) in nontreated or trinexapac-ethyl (TE) treated Tifway bermudagrass.

View larger version (14K): [in a new window]   Fig. 3. Leachate nitrate concentrations following three consecutive applications of NH4NO3 to bermudagrass turf with and without trinexapac-ethyl (TE) treatment. Leaching patterns in nontreated columns are represented by black dots while those for TE-treated columns are represented by white dots.

View larger version (41K): [in a new window]   Fig. 4. Allocation of 15N to bermudagrass leaf growth following (A) the first and (B) second applications of 15N-NH4NO3. Significant effects (P = 0.05) of trinexapac-ethyl (TE) for each clipping collection date are indicated by asterisks.