Vol. 9, Issue 6, Part H (2025)

The present investigation “Response of Strawberry cv. Winter Dawn to Plant Growth Regulators for Growth, Yield, and Quality under Protected Conditions” was laid out in the naturally ventilated polyhouse at experimental field of the Department of Horticulture, Sam Higginbottom University of Agriculture, Technology and Sciences, Naini, Prayagraj (UP), during 2024-2025. This experiment was laid out in randomized block design and the study consists of ten treatments (9+1) including control and these treatments are replicated thrice. The treatments were, T0 (control), T1 (Gibberllic acid @ 50 ppm), T2 (Gibberellic acid @ 75 ppm), T3 (Gibberellic acid @ 100 ppm), T4 (Paclobutrazol @ 25 ppm), T5 (Paclobutrazol @ 50 ppm), T6 (Paclobutrazol @ 75 ppm), T7 (Triacontanol @ 30 ppm), T8 (Triacontanol @ 40 ppm), T9 (Triacontanol @ 50 ppm). From our experimental findings it is concluded that the treatment T1 (GA3 @ 50 ppm) performed best in terms of vegetative parameters. The treatment T2 (GA3 @ 75 ppm) performed best in terms of number of runners and earliness in flowering. However, the treatment T7 (Triacontanol @ 30 ppm) was found best for other yield parameters, and the treatment T3 (GA3 @ 100 ppm) was found to be best in terms of TSS. The treatment (Triacontanol @ 30 ppm) was best for acidity and total sugar content. Moreover, treatment T6 (Paclobutrazol @ 75 ppm) was found to be best for vitamin C.