MAIZE SEEDING RATE: REPLACING GERMINATION WITH FIELD EMERGENCE AND ACCELERATED AGING
Keywords:
Stand density, Physiological potential, Vigor, Mean percentage errorAbstract
The objective of this study was to evaluate the suitability of
replacing the germination test in the calculation of seed quantity with the
results of the field emergence and accelerated aging tests. The experiment was
conducted using a randomized block design in a 2x5 factorial scheme: two
levels of seed vigor and five levels of seeding safety margin (0, 5, 10, 15 and
20%) using untreated seeds of the hybrid Defender Viptera 3. The evaluated
parameters were percentage of germination, field emergence and accelerated
aging. The analyzed variable, plant stand, was submitted to analysis of variance
at the 5% significance level and, when significant, the results were submitted
to the Mean Percentage Error statistical procedure to determine the degree of
proximity between forecast and observed values of stand density. The results
showed that, requiring a smaller safety margin, the results of field emergence
and accelerated aging tests applied in the seeding rate calculation were more
accurate than germination for stand density estimation. For so, nevertheless,
they required larger amounts of seeds in sowing operation to reach the same
stand density obtained with the use of germination test.
Downloads
Published
How to Cite
Issue
Section
License
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution License that allows the sharing of work and recognition of the work of authorship and initial publication in this journal.
Authors are able to take on additional contracts separately for non-exclusive distribution of the version of the paper published in this journal (eg, in an institutional repository or publish as a book), with acknowledgment of its initial publication in this journal.
Authors are permitted and encouraged to post their work online (eg, in institutional repositories or on their website) at any point before or during the editorial process, as this may leadto productive exchanges, as well as increase the impact and citation of published work.
