Different volumes of growing medium
in the development of plants of marigold
(Tagetes patula L.)
The objective of this work was to evaluate the
development of marigold plants (Tagetes patula L.),
produced in different volumes of growing medium.
The experiment was carried out in a greenhouse of the
Department of Fitotecnia and Fitossanitarismo of UFPR.
A completely randomized experimental design with 4
treatments, 4 replications and 10 plants per parcel, was
used. The treatments had consisted of the following volumes
of growing medium: 47, 105, 380 and 1000 cm3. The
effect of the treatments had been evaluated determining
the fresh and dry matter of the aerial part and the root
system, height of the plants, number of buds and number
of flowers. It was evidenced that the development
of the plants was influenced by the volume of growing
medium. The biggest volume presented the best results
for all the analyzed variable. However the volume of 380
cm3 is recommended, for conferring minor increment to
the final cost of the production, keeping the desirable
characteristics for the commercialization.