Determinación del coeficiente de nascencia en coberturas cespitosas
One of the main problems that appear for the investigation in turf on adaptability of different species and its mixtures or the introduction from other new ones, consists of the difficulty to calculate the density of plants, in form sufficiently approximated to the real results like allowing t...
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| Publicado en: | Revista de la Facultad de Ciencias Agrarias |
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| Autores principales: | , , , , , |
| Materias: | |
| Acceso en línea: | https://bdigital.uncu.edu.ar/fichas.php?idobjeto=1287 |
| Sumario: | One of the main problems that appear
for the investigation in turf on adaptability of
different species and its mixtures or the
introduction from other new ones, consists
of the difficulty to calculate the density of
plants, in form sufficiently approximated to
the real results like allowing to statistically
valid comparisons of the quality or uses of
the resulting cultive. A new methodology sets
out to replace that traditional of calculation
of necessities of seed by percentage
proportions in weight, with densities determined
by test and error according to the final
result by aspect and correction of single
amount of mixture by cultural value. The
proposal considers mathematical calculations
to determine the exact amount of seeds
to use to obtain a final density of plants
controlled, considering weight specific of the
seed and cultural value, affecting the
resulting data by a correction factor (CN) that
relates the obtained theoretical value to the
answer to field. It is to say the amount of seed
to use must calculate based on the density
of plants wished.
In the present work the factor CN will
be determined for different species. Parting
of the hypothesis that is possible to improve
the forms of selection of species and
preparation of mixtures through the calculation
of the necessity of seeds by cm2 and that
some of the used species have low efficiency
in the relation seed-plants, reason why would
be due to fit its proportion in the local
commercial mixtures according to this factor
of culture.
As methodology sets out:
a. analysis of germinative power, purity and
specific weight of commercial seeds;
b. with four repetitions, in blocks at chance
individual sowings of the species in ideal
conditions of substrate, illumination and
humidity and sowing in the same conditions
of field will be made that a traditional culture;
c. count of the number of seedlings obtained
in each case;
d. with the average results and its respective
intervals of confidence are considered the
coefficients (CN).
This new way to calculate the exact
amounts of each component of a mixture for
turf opens a very important field to the
investigation of suitable species more to each
atmosphere, since traditional metodology
leads to very ambiguous results and of
difficult comparison. |
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