The Effect of Paclobutrazol on The Growth of Mentik Wangi Rice under Drought Stress Shifa Nuraziza (a*), Muji Rahayu (a), Edi Purwanto (a)
Universitas Sebelas Maret
Abstract
Climate change can cause the dry season to last longer, which can have negative effects, including on the agricultural sector. Long dry seasons in the agricultural sector have the potential to induce drought stress, which can inhibit growth and reduce yields. The Mentik Wangi, a popular local aromatic rice variety cultivated in Indonesia, experiences decreased yields due to the adverse effects of drought stress. Paclobutrazol functions as a plant growth regulator that effectively enhances plant resistance. The application of paclobutrazol to Mentik Wangi rice presents a promising measure for mitigating drought-induced stress. This research investigates the effect of paclobutrazol application on the growth of Mentik Wangi rice under drought stress. The method used was a completely randomized design (CRD) with two factors. The first factor was the level of drought stress (control, moderate stress, and severe stress), and the second factor was the concentration of paclobutrazol (0, 50, 100, and 150 ppm). Plant height, number of tillers, leaf area, and age of flower emergence were the growth parameters observed. The drought stress significantly impacted plant height, number of tillers, leaf area, and age of flower emergence. The results indicated that paclobutrazol application significantly affected plant height parameters under drought stress conditions.
