The simultaneous effect of water stress and biofertilizer on physiology and quality of processing tomato

L. Helyes, L. A. Tuan, J. Bakr, Z. Pék

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study investigated effects of plant growth promoting rhizobacteria (PGPR) on processing tomato ‘Uno Rosso’ F1, grown under three different water supplies. Field effectiveness of both pre-transplant inoculation and post-transplant re-inoculation of rhizobacteria on total biomass, yield, water use efficiency (WUE), SPAD, canopy temperature, proline, and main antioxidants were examined. The open field experiment was conducted on the experimental farm of the Institute of Horticulture at Szent István University, Gödöllő, Hungary, in 2015. The propagation was carried out in a greenhouse by using Klasmann TS3 substrate and inoculated with liquid PGPR solution Phylazonit (Phyl+) or not (control). After planting out half of the inoculated seedlings were inoculated again by adding 1% of the solution by the drip irrigation system (Phyl++). There were two different irrigation treatments: deficit water supply (W50), and optimum water supply (W100), compared with rainfed control (W0). Drip irrigated water was given out according to the calculated daily evapotranspiration based on data from the National Meteorological Institute. A single harvest was conducted on August 25, total biomass and marketable yield were assessed. The analytics of ingredients was made using HPLC by evaluation of total carotenoids, lycopene, β-carotene and ascorbic acid. The marketable yield ranged between 14.7 and 93.8 t ha -1 , depending on the treatment. The average °Brix of the treatments ranged from 3.5 to 8.2. The total average carotenoids concentration of the treatments ranged from 62.0 and 167.2 µg g -1 . The average lycopene concentration of the treatments ranged from 45.4 to 130.9 µg g -1 . The effect of PGPR treatment was clearly positive for harvested yield, but this effect only prevailed under irrigated conditions. The double PGPR treatment continued to increase production with optimal water supply.

Original languageEnglish
Pages (from-to)53-60
Number of pages8
JournalActa Horticulturae
Volume1233
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

plant growth-promoting rhizobacteria
biofertilizers
water supply
water stress
physiology
tomatoes
lycopene
carotenoids
rhizosphere bacteria
irrigated conditions
demonstration farms
biomass
carotenes
horticulture
brix
microirrigation
irrigation systems
Hungary
water use efficiency
evapotranspiration

Keywords

  • Brix
  • Carotenoids
  • Irrigation
  • Water-use efficiency

ASJC Scopus subject areas

  • Horticulture

Cite this

The simultaneous effect of water stress and biofertilizer on physiology and quality of processing tomato. / Helyes, L.; Tuan, L. A.; Bakr, J.; Pék, Z.

In: Acta Horticulturae, Vol. 1233, 01.01.2019, p. 53-60.

Research output: Contribution to journalArticle

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