| Soybeans within a specific seed size range are often preferred for the manufacture of specialty soy products. This study examined the influence of row spacing and seeding rate on seed yield, average seed size, and seed size uniformity of Camp (small seeded) and V71-370 (large seeded) soybean cultivars (Glycine max (L.) Merr.). Experiments were conducted in 1992 and 1993 at Kentland Farm near Blacksburg, Virginia. Row widths of 38 and 76 cm and seeding rates of 125, 250, 500, and 750 thousand seeds ha;Averaged over treatments, 38-cm row spacings yielded higher than 76-cm row spacing by 11.6%. Additionally, each increase in seeding rate resulted in increased yield up to 500,000 seeds ha;Yield of useful seed (total yield multiplied by the proportion of seed between 4.8 and 5.6 mm in diameter for Camp, or larger than 7.9 mm for V71-370) was maximized at narrow row spacings and 500,000 seeds ha;In a separate investigation in 1992, heritabilities based on plot data from crosses involving Camp and Jizuka, MD87L-0198, and Stafford soybeans, replicated twice in one location were estimated using two methods. Heritabilities based on F... |
