1. Evaluation of the Herbicides Casper and Roundup Ultra and Their Compatibility with Some Fungal Isolates in Combating the Water Hyacinth, Eichhornia crassipes (Mart) Solms.
- Author
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AHMED, ZYIAD SHHAAB, HASSAN, ABDULLAH ABDULKAREEM, ALSHANDAH, AHMEDNATIQ, and BAKER, SAFAA ZAKARIA
- Subjects
WATER hyacinth ,EFFECT of herbicides on plants ,HERBICIDES ,AQUATIC plants ,PLANT-water relationships ,ALTERNARIA ,WEEDS - Abstract
This study was conducted in the Al-Dabasa area, located 10 km from Tikrit, Iraq, during the 2022 growth and reproduction season of the water hyacinth to combat it using the herbicides Roundup Ultra and Casper. The compatibility of five fungal isolates with the herbicides was determined for better efficiency in limiting the spread of this weed. Alternaria eichhorniae (Has.AA-33) and Umbelopsis isabellina (Has.AA-31) exhibited no discernible impact at various concentrations of the Casper. In contrast, the fungus A. tenuissima (Has.AA-30) induced the highest inhibition of 25% at 1.25 g/L treatment, compared to 12.5% inhibition observed for U. isabellina (Has.AA-43) and A. alternata (Has. AA-32), respectively. The compatibility of the isolates with Roundup Ultra showed a significant 100% inhibition rate for all fungal isolates. Furthermore, the study explored the impact on water hyacinth plants, demonstrating the treatment involving Casper (1.25 g/L) and A. eichhorniae, where 47.77% dead leaves were recorded compared to controls (2.6%). However, the Roundup herbicide + A. eichhorniae at 15 mL/L gave the highest dead leaves (88.8%) on day 7 after spraying and was 100% after 15-day post-treatment. A. eichhorniae was superior to U. isabelline treatment, with 66.2% dead leaves recorded on the 7th day after spraying, which increased to 72.72% after 15-day post-treatment. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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