| dc.description.abstract | Soybean is an important food commodity in Indonesia, but its production is
often hampered by climate change and unpredictable weather. Drought stress can
reduce plant productivity by disrupting physiological processes and photosynthesis.
This study aims to identify the drought tolerance of several early maturing soybean
varieties. This study was conducted at the Greenhouse of the Faculty of Agriculture,
Medan, University of Sumatera Utara at an altitude of ± 25 meters below sea level
from February 2025 to June 2025. This study used a Randomized Block Design
(RBD) with two factors: early maturing soybean varieties (Grobogan, Gepak
Kuning, and Dega 1) and field capacity (80%, 60%, 40%, and 20%). The results
showed that variety treatment significantly affected plant height (2-6 WAP), dry
weight of 100 seeds, dry weight of roots, dry weight of seeds/plant, and flowering
age. The Dega 1 variety showed the highest values in plant height, dry weight of
100 seeds, dry weight of seeds/plant and was classified as tolerant group on the
drought sensitivity index. Meanwhile, the Gepak Kuning variety produced the
highest values in root dry weight and flowering age, although it did not produce
seeds and the Gepak Kuning variety was included in the tolerant group in the
drought sensitivity index parameter. Field capacity treatment significantly affected
harvest age, with 60% field capacity (K2) producing the fastest harvest age. The
interaction between variety and field capacity significantly affected root dry weight,
with the V1K4 treatment (Grobogan at 20% field capacity) showing the highest
value. | en_US |
