Row Spacing and Seeding Rate Effects on Soybean Seed Yield

Abstract

Soybean growers in the northern latitudes of the United States plant the crop in a wide range of row spacings although there has been a shift toward wider rows (>50 cm) in some Upper Midwest states in the last 5 years. The objective of this study was to evaluate the impact of row spacing and seeding rate on the performance of soybean and to determine whether these management practices interact to influence soybean yield. A row spacing study was conducted at Aberdeen and Beresford, South Dakota, USA, in 2014 and 2015. The study had two row spacings (19 and 76 cm), four seeding rates (247,000, 333,500, 420,000, and 506,500 seeds ha À1 ), and two soybean varieties at each location. Soybean had greater stand establishment in 19 cm rows (6-10% higher) compared with 76 cm rows. Soybean in 19 cm rows yielded 0.8-10% more than in 76 cm rows depending on the location or year. Seed yield increased with increasing seeding rate with the highest seeding rate of 506,000 seeds ha À1 yielding greatest. The increase in seed yield due to the increase in seeding rate ranged from 3 to 7%. At each location, the longer duration soybean variety yielded higher than the shorter duration variety.

Effect of planting density and row spacing on the yielding of soybean (Glycine max L. Merrill)

“…However, when planting soybean into narrow rows, the seed yield was significantly highest with the highest planting density. According to Schutte and Nleya (2019), in the United States an increase in the soybean seed yield triggered by an increase in the planting density is merely 3-7%. In Germany, the soybean yield increased significantly along with an increase in the planting density (Sobko et al 2019).…”

“…Sobko et al (2019) found that the seed yield and the height of the 1 st pod setting increased with the planting density, while the number of pods per plant decreased; with a higher planting density, the LAI value also increased. However, in the experiment reported by Schutte and Nleya (2019), an increase in the seed yield in soybean due to an increasing planting density was inconsiderable. However, in regions with favourable or expected good humidity conditions, higher soybean sowing density is accompanied by higher yields (Rebilas et al 2020).…”

The Effects of Management (Tillage, Fertilization, Plant Density) on Soybean Yield and Quality in a Three-Year Experiment under Transylvanian Plain Climate Conditions

“…There were no interactions observed between soybean plant density and the application of N on yield, yield components, or oil and protein concentrations [48,49]. The results of [50] and others indicated that soybean planted in narrow rows of 19 cm had higher yield potential, as compared with soybean planted in wider rows. They reported that soybean yield responded to the seeding rate with the maximum yield obtained at a seeding rate of 506,500 seeds per ha −1 with no significant interaction between the row spacing and seeding rate.…”

Productivity of Different Soybean Cultivars Depending on Meteorological Conditions and Growing Manner in Latgale 2018–2020

“…Therefore, it is very important to choose earlier cultivars to avoid this risk. Also, in Russia, it has been established that yield is significantly affected by the sowing rate [16] Study in USA indicate that soybean planted in narrow rows of 19 cm have higher yield potential when compared to soybean planted in wider rows [9] The lower crop yield with 12 cm row spacing can be explained by the fact that the plants in the row have more competition for moisture and nutrients than in the conventional sowing [15]The same competitive tendency can be observed depending on the sowing norm -at the sowing norm of 60 germinating seeds per 1 m 2 the competition between germinating plants is higher than at the sowing norm of 40 germinating seeds per 1 m 2 , which could affect field germination. As Иванов, Мордвинцев (2014) demonstrate, increasing the sowing rate significantly reduced the number of pods per plant.…”