Authors:
Pujawati Suryatmana
, Iva Fitriani
, Nadia Nurania Kamalludin
, Mieke Rochimi Setiawati
,Betty Natalie
Fitriatin
and Reginawanti Hindersah ,Indonesia
|
Abstract:
The hydroponic system is an alternative technology to plant cultivation as a solution to
overcome the limitation of agricultural land. Tomato (Solanum lycopersicum L.) production with
this system has its own market segment. To increase the production of tomatoes in a hydroponic
system requires the precise composition and dosage of nutrients, and the use of nutrients
effectiveness needs to be increased through the application of an effective “Plant Growth
Promoting Rhizobacteria” (PGPR) consortium. This experiment aims to determine the potential
effectiveness of the PGPR consortium and to find the properly dose of hydroponic nutrients to
increase the viability of Phosphate Solubilizing Bacteria (PSB), plant P uptake, and tomato yield
in a hydroponic system. The research design used was a factorial randomized block design
(RBD) consisting of two factors, namely the dose of the PGPR consortium consisting of three
levels (0 ml/polybag, 5 ml/polybag, and 10 ml/polybag and the second factor was the nutritional
dose: three levels (0 ml, 250 ml, and 500 ml). The experimental results showed that there was no
interaction between the application of the PGPR consortium and hydroponic nutrition on the
population of phosphate solubilizing bacteria, P uptake of tomato plants and tomato yield. The
application of the PGPR consortium did not show a significant effect in increasing the PSB
population, P uptake and yield, but the PGPR consortium tended to have the potential to increase
the PSB population density, P uptake and tomato fruit weight, although were not increasing
significantly. While the application of nutrient significantly increased Phosphate uptake,
population of phosphate solubilizing bacteria and tomato yield. The dose of 250 ml/pot produced
the highest tomato yield which reached 839.33 g/plant. |
