*3.3. Impact of GA3 Spraying Times on Sugar Beet Growth and Yield Parameters*

Data presented in Table 2 illustrate that root diameter, root fresh weight/plant, foliage fresh weight/plant, and root yield/ha was significantly affected by GA3 spraying times in the two seasons, while no significant differences were detected in root length in the two seasons. Spraying sugar beets with GA3 for the first time (60 DAP) significantly surpassed spraying plants for the second time (120 DAP) by 1.9 and 2.9% for root diameter, 2.7 and 0.8% for root fresh weight/plant, 6.5 and 4% for foliage fresh weight/plant, and 2.1 and 1.8% for root yield/ha in the first and second seasons, respectively.

As shown in Table 3, foliage yield/ha, sucrose, and TSS percentages, as well as sugar yield/ha were significantly affected by GA3 spraying times. On the other hand, GA3 spraying times exhibited insignificant effects in purity percentage in both seasons. Foliar application of GA3 at 60 DAP exceeded the same treatment of its application at 120 DAP for foliage yield by 6.6 and 3.9%, sucrose percentage by 3.6 and 3.6%, TSS percentage by 2 and 2.5%, and sugar yield by 5.6 and 5.8% in the first and second season, respectively.
