Evaluation of Seven Phenoxyacetic Acid Drifts on Morphological Parameters of Three Rice (Oryza sativa L.) Varieties under Controlled Sowing Conditions in Côte d'Ivoire

Rice, the main food of population in Côte d'Ivoire, has a low yield. This study aimed to evaluate ability phenoxyacetic acid derivatives boost vegetative parameters rice was conducted Azaguié using split-plot design. The varieties WA638-1, C26, Nérica 2 and seven were used. Three seeds each variety sown pots. One seedling per de-mated at 7 DAS. Volumes 150, 180, 225 ml concentrated 10-5 M, 10-7 10-9 M applied leaves on 15, 20, 25 DAS, respectively. Height, number tillers, girth vigor index determined. results showed that treatment T7 improved height WAB638-1 6.75% tillering 366.6%. increased 9.52% by T8 80.37% T20. formation C26 tillers favored 171% treatment, 83.17% T21, 10 % T21 7.50% T14 treatments. In 2, positively induced 15.15% 34.83 T19 also promoted 12.12% treatments T20 150% T13 T19. As for height, it stimulated 22.39 treatment. reduced except T12, decreased 2.50% T15, T17 T3, 66.70% T4. inhibited 2.56% with T1 Treatments T13, T14, T7, T8, those observed parameters.