Influencia de la densidad de siembra en el porcentaje de granos descartados en progenitores hembras de maíz
Density trials on typical Hapludol soil were conducted over a 3 consecutive year period in the Southern region of Santa Fe province, in Venado Tuerto city. Four plant densities were used: 50,000, 70,000, 90,000, & 110,000 pl/ha-1 of maize female parents (Zea Mays), (L08, L53, & L14) from...
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| Formato: | masterThesis Tésis de Maestría acceptedVersion |
| Lenguaje: | Español |
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FCA-UNR
2020
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/2133/19061 http://hdl.handle.net/2133/19061 |
| Aporte de: |
| Sumario: | Density trials on typical Hapludol soil were conducted over a 3 consecutive year
period in the Southern region of Santa Fe province, in Venado Tuerto city. Four plant
densities were used: 50,000, 70,000, 90,000, & 110,000 pl/ha-1 of maize female
parents (Zea Mays), (L08, L53, & L14) from three main hybrids belonging to
Syngenta Agro S.A. The objective was to identify whether there was a density which
would allow to obtain a lower Percentage of discarded seeds after seed classification.
Lowering this variable as much as possible is a desirable goal because the higher
the percentage of discarded seeds, the lower the quantity of bags available for sale.
The data obtained was analyzed with ANOVA and, in order to determine if there were
significant differences among averages, the Minimum Significant Difference was
used at 5%.
When the data was analyzed, variability in line's responses was observed in Yield,
Useful Shape and Size, and Percentage of Discarded Seeds regarding densities, but
no specific density was identified to maximize the Yield and USS expressions, and to
lower the Percentage of Discarded Seeds. Instead, an optimal match for each factor
in each line was observed.
This finding means that the Percentage of Discarded Seeds variable in the lines
analyzed presented no significant differences, thus, none of the four seed densities
analyzed allowed to determine differential discarded seed percentages, being the
values between the range of 2.17% (118 kg ha-1) - 2.94%( 137 kg ha -1).
It is worth stressing that the results were obtained from a trial conducted over a threeconsecutive-year period in the same premises and city. It is advisable to conduct
additional trials in other locations of the country to determine if the results remain
within the values obtained in Venado Tuerto region. |
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