Av. Fontanive et al., FOLIAR ANALYSIS OF SULFUR IN DIFFERENT SOYBEAN CULTIVAR STAGES AND ITS RELATION TO YIELD, Communications in soil science and plant analysis, 27(1-2), 1996, pp. 179-186
Six soybean cultivars (maturity group V) were sown in a Typic Argiudol
l. Experimental plots were arranged in a randomized block design with
three replications. Sampling dates were at different stages: V, R2, R4
, and R55. All the varieties showed that the greatest sulfur (S) conce
ntrations were in stage V and the lowest in stage R55. No significant
differences were found between the means of the S concentrations durin
g the V, R4, and R55 stages. In the R2 stage, there was a poor correla
tion with the weight of 1,000 seeds.