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| Main Authors: | , , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2025
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| Subjects: | |
| Online Access: | https://onlinelibrary.wiley.com/doi/10.1002/its2.201 |
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Table of Contents:
- Bermudagrass quality affected by irrigation level, fertilization, a soil surfactant, and trinexapac‐ethyl Mino Sportelli Matteo Serena Ciro Velasco‐Cruz Bernd Leinauer International Turfgrass Society Research Journal Abstract Limited information is available on the effect of fertility and chemical management under drought conditions. A study investigated the effects of the plant growth regulator trinexapac‐ethyl (TE; applied at 1.6 L ha −1 month −1 ) and the soil surfactant Revolution® (applied at 20 L ha −1 month −1 ) on Princess 77 bermudagrass ( Cynodon dactylon L. Pers). The experiment included two reference evapotranspiration replacement levels (ET o ) of 45% and 75% combined with a 2 × 2 factorial of N (23 and 45 kg N ha −1 month −1 and Fe (0 and 2 kg Fe ha −1 month −1 ) fertility levels. At 75% ET o , turfgrass quality remained above acceptable levels (6.7), with the lowest quality observed in control plots receiving low N without iron. Normalized difference vegetation index (NDVI) was higher at 75% ET o , but plots receiving TE with high N and no iron and irrigated at 45% ET o had NDVI values similar to plots irrigated at 75% ET o . Under drought conditions (45% ET o ), 14 out of 16 treatment combinations maintained acceptable turfgrass quality, except for the control with low N and iron (5.7) and Revolution® with high N but no iron (5.4). Overall, the results suggest that TE plus/or ad soil surfactants may improve turfgrass quality and NDVI under drought conditions. 10.1002/its2.201 http://onlinelibrary.wiley.com/termsAndConditions#vor