The effect of Glycine max sowing density on seeds yield and plant morphology
This experiment examined the effect of the sowing density of G. max on seeds yield and plant morphology. Results indicated that there was a significantly negative relationship between plant density (plants/ m2) and plant branching (r= -0. 963 8,P<0. 01) , pods number (r= - 0. 970 6,P<0. 01), and seeds weight (r= -0.966 34,P<0.01); as well as a significantly negative relationship between pods number and seeds weight (r= -0. 967 6,P<0. 01), pods per plant (r= - 0. 963 5,P<0. 01), and pods weight (r= - 0. 946 2,P <0. 01 ). A significantly positive relationship was found between both sowing density and stems number (r= 0. 985 3,P<0.01) sowing density and pods number (r=0. 971 7 , P<0. 01), with a significantly positive relationship also found to exist between stems number and pods number (r=0. 973 7,P<0. 01). The largest seeds yield recorded was 427. 3 kg/m2 ,achieved at a sowing density of 10 plants/m2. Other plant attributes recorded at this sowing density include: branching of 7. 64, pods number 84. 46, and pods weight 0. 689, with the seeds weight per pod ratio was 68. 8%. The relationship between seeds yield and sowing density was best described by the parabola regression equation: W(g/m2) =404. 270 0 - 0. 301 7 h + 4. 706 1 h2 - 1. 965 1 h3 (r = 0. 850 3,P<0.05).
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