Effects of Boron Nutrition and Water Stress on Nitrogen Fixation, Seed δ¹⁵N and δ¹³C Dynamics, and Seed Composition in Soybean Cultivars Differing in Maturities

Figure 4

Concentration (mg B kg⁻¹) of boron in leaves (a) and seed (b) as influenced by water stress and boron treatments (foliar boron was applied at 0.45 kg⋅ha⁻¹ at flowering and seed-fill stages) in Hutcheson cultivar (maturity group V). Treatments were as follows: well-watered plants with no foliar B (W − B), well-watered plants with foliar B (W + B), water-stressed plants with no foliar B (WS − B), and water-stressed plants with foliar B (WS + B).

(a)

(b)