The Effect of Growth and Yield of Edamame Soybeans Glycine max (L.) Merr at Different Planting Distances in Bengkulu City, Indonesia
Jeremia Sinaga
Agroecotechnology Study Program, University of Bengkulu, Indonesia.
Uswatun Nurjanah *
Department of Crop Production, University of Bengkulu, Indonesia.
Hesti Pujiwati
Department of Crop Production, University of Bengkulu, Indonesia.
Marulak Simarmata
Department of Crop Production, University of Bengkulu, Indonesia.
Masdar
Department of Crop Production, University of Bengkulu, Indonesia.
*Author to whom correspondence should be addressed.
Abstract
Aims: This study aimed to determine the optimal planting distance for the growth and yield of edamame soybeans.
Study Design: The experiment was arranged in a completely randomized block design (CRBD) with one factor consisting of five planting distances of 20 cm x 15 cm, 20 cm x 25 cm, 30 cm x 15 cm, 30 cm x 25 cm, and 20 cm x 30 cm.
Place and time of Study: The research was conducted at the experimental field of the Bengkulu University Bengkulu City, province of Bengkulu, Indonesia, started from June to August 2025.
Methodology: Data were analyzed using analysis of variance (ANOVA) followed by an F-test at a 5% significance level. Parameters showing significant differences were further tested using the least significant difference (LSD) test at the 5% level.
Results: Planting distance significantly affected several yield parameters (p < 0.05). The 30 cm x 25 cm spacing produced the highest pod weight per plant (86.78 g) and filled pod weight per plant (86.28 g). The 20 cm x 30 cm spacing resulted in the highest number of pods per plant (34.24 pods) and dry weight of shoot (24.23 g), while the 20 cm x 15 cm spacing produced the lowest dry weight of weeds (34.14 g).
Conclusion: Planting distance significantly affects the growth and yield of edamame soybean. A planting distance of 30 cm x 25 cm provides the best yield performance, while a planting distance of 20 cm x 15 cm is effective in suppressing weed growth. Therefore, a planting distance of 30 cm x 25 cm can be recommended as a strategy to increase edamame productivity at Bengkulu City, Indonesian.
Keywords: Planting distance, edamame soybeans, growth and yield, weeds