Figure 4.

In vitro and in vivo evaluation of fungicides against Thielaviopsis punctulata. (A) Percentage growth inhibition of mycelium from eight fungicides: Aliette, Infinito, Ridomil Gold, Score, Tachigazole, Teldor, and Uniform. The efficiency of each fungicide was tested on potato dextrose agar (PDA) media against three T. punctulata isolates: TP1, TP2, and TP3. (B) Date palm plants of the Khalas cultivar were first inoculated with the T. punctulata isolate TP2, and at 2 WPI, the plants were treated with the fungicides Aliette and Score. The healthy control was mock-inoculated using double distilled water. (C) Disease severity index (DSI) of the infected date palm plants at 8 WPI treated with the Aliette and Score fungicides. The significant values at p > 0.05 are shown as different lowercase letters.