The
preharvest desiccation of soybeans has been adopted in order
to anticipate and uniformize the mechanical harvesting process. Thus,
this study aimed to evaluate the effects of desiccation with glufosinate-ammonium
on quality attributes of six soybean cultivars grown in southern Brazil
(NS 5959, NS 5909, NS 6535, 95R95IPRO, 96Y90, and CZ26B42). Grains
were evaluated as both freshly harvested and stored soybean (12 months
at 30 °C). The desiccation treatment reduced the percentage of
grains damaged by sucking insects (−38%); storage increased
the fermented grains percentage (973%) while decreasing the percentage
(−39%) of grains damaged by sucking insects. The results for
solute leaching, electric conductivity, fat acidity, and protein solubility
were dependent on all studied factors; however, the biggest changes
are observed after storage (+634% for solute leaching and +30% for
fat acidity). Principal component analysis indicated that the latent
effects of storage were mainly represented by apigenin, p-coumaric acid, and naringenin. Preharvest desiccation with glufosinate-ammonium
minimally affected the quality of the grains. The variables desiccation
× storage × genotypes as well as their interactions must
be considered when making decisions for future studies.
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