Fertigation and yield of tomato hybrids growing in a greenhouse.
The objective of this work was to evaluate the
response of tomato hybrids to three fertilization-watering
programs based on recommendations of dose compiled
from the literature (LIT), curves of absorption (CA), and
adjustments of information previously analized (AJU).
From October 2008 to March 2009, two tomato hybrids
(FB-17 and DRD-8108) were grown in the greenhouse of
the Fabio Baudrit Moreno Agricultural Research Station in
Alajuela, Costa Rica. No signifi cant statistical differences
were found in the commercial performance in none of the
three fertilization treatments; signifi cant differences among
the hybrids were observed. The hybrid DRD-8108 surpassed
FB-17. FB-17 hybrid yield for treatment LIT was 69.3 t/ha
and 5.87 kg/plant; in the CA treatment was 75.5 t/ha and
6.39 kg/plant; and in the AJU treatment 76.4 t/ha and 6.62
kg/plant, respectively. For the DRD-8108 hybrid, the LIT
treatment yield was 85.4 t/ha and 8.55 kg/plant; in the CA
treatment was 86.7 t/ha and 7.45 kg/plant; fi nally in the AJU
treatment yield was 83.9 t/ha and 7.38 kg/plant. The high
internal greenhouse temperature was the main limiting factor
that constrained yield.