Physiological and productive response of four Glycine max cultivars
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Abstract
In order to evaluate the physiological and productive response
of four soybean cultivars, an investigation was carried out under
field conditions at the Empresa de Semillas Villa Clara, from
January to April 2020. A randomized block design with four treatments and five replications was used. The soybean cultivars ‘Conquista’, ‘Vencedora’,
‘Luziania’ and ‘BRS-284’ were evaluated in a moderately washed Padded Brown soil. Sowing
was manual with a distance of 0.90 m x 0.05 m, one seed was deposited per nest, at a depth of
approximately 3 cm. In phenological stages V4 and R3, the physiological indicators leaf
efficiency index and net assimilation rate were determined, as well as yield components,
number of seeds per plant and weight of 100 seeds, including biological and agricultural yield.
The cultivar ‘BRS-284’ presented the highest leaf efficiency index with significant differences
with respect to the other cultivars. Yield components showed significant differences among the
cultivars; the highest agricultural and biological yield was achieved in the cultivar ‘Luziania’
with 1.6 t ha-1 and 6.7 t ha-1, respectively.
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