Morphophysiology, Productivity and Quality of Soybean (Glycine max (L.) Merr.) cv. Merlin in Response to Row Spacing and Seeding Systems

Abstract

The appropriate row spacing and sowing density of soybeans are the basic non-input and pro-environmental agrotechnical factors. The optimal spacing of plants in the field can be crucial in terms of reducing competition between plants for water, nutrients and light, which is particularly important for photosynthesis and maximizes the use of environmental resources. The field experiment was carried out in the years 2017–2019 at the Experimental Station for Cultivar Assessment in Przecław, Poland, on Merlin cv. soybean plants. The experimental factors were: row spacing of 15 and 30 cm and the sowing density of 70, 90 and 110 pcs. m−2. During the research, the influence of row spacing and sowing density on yielding, seed quality, plant morphological features, nodulation and physiological processes in plants was assessed. The obtained soybean seed yield was not influenced by the experimental factors, but only by the weather conditions prevailing in the research years. The smaller row spacing and sowing density of 15/70 and 30/70 resulted in an increase in the parameters of the yield structure, the number and dry weight of root nodules, as well as the parameters of chlorophyll fluorescence (Fv/Fm, Fv/F0 and PI). Greater plant density per area unit resulted in low yield structure parameters, lower number and dry weight of nodules, poorer parameters of chlorophyll fluorescence and higher protein content in seeds. With the increased sowing density, the plants were higher, the 1st. pod was placed higher and an LAI value was also higher.

Planting precision: Investigating the soybean growth dynamics with different varieties and planting geometries

“…It has been observed that the height of the first pod increases with the overall height of the plant as shown in figure 1. Anuradha et al (2014) [5] and Jańczak-Pieniążek et al (2021) [15] also reported a positive correlation between plant height and basal pod height. This increase is particularly noticeable under narrow spacing, while it decreases with greater spacing.…”

Influence of nitrogen fertilization, seed inoculation and the synergistic effect of these treatments on soybean yields under conditions in south-western Poland

“…Therefore, attempts to soybean cultivation in Polish conditions seems to be promising. One way to achieve protein balance stability is to improve legume yields and, in particular, to improve soybean agronomics in European countries 2 , 4 – 9 .…”

Morphological Growth of Soybean (Glycine max L.) Treated with Soil Application of Humic Acid under Different Cultivation Periods

“…Its also known as one of the most widely grown and traded crops worldwide (FAO, 2018). The area planted with soybeans in 2019 was 120.5 million ha, and the average yield was 2.77 (Jańczak-Pieniążek et al, 2021). Due to its chemical composition, the soybean is essential for both humans and animals.…”