Amjad W Alsamra1*, Yaser Hamad2 , and Mitiady Boras1

1 Horticulture Department, Faculty of Agriculture engineering, Lattakia University,
Lattakia, Syria.
2Department of Soil Sciences, Faculty of Agriculture engineering, Lattakia University, Lattakia, Syria.
(*Corresponding author: Amjad Wahib Alsamra, E-Mail: amjadalsamra444@gmail.com , Mobile: 0988466799).

Received: 10/ 08/ 2025                        Accepted: 29/ 09/ 2025

The research was carried out within an unheated sheltered house in the AL-Hafa area (Latakia governorate) during the spring lug of the agricultural season 2025, the research aimed to study the effect of both yeast suspension and three bacterial biofertilizers on some morphophysiological indicators of the tomato plant “hybrid Mandaloun F1”. The study included five transactions: witness (untreated plants), plants sprayed with yeast suspension, plants inoculated with bacterial bio-fertilizer I (M1), plants inoculated with bacterial bio-fertilizer II (M2) and plants inoculated with bio-fertilizer III (M3). In carrying out the research, follow the design of complete random sectors with three duplicates per transaction and at a rate of /10/ plants per transaction. The results showed the positive effect of both inoculation with bacterial fertilizer and spraying with yeast extract in the studied qualities, and the inoculation treatment with the third bio-fertilizer significantly exceeded the rest of the transactions and achieved the best results, as the highest values were recorded in the number of plant leaves (33.7)leaf/plant, leaf litter area (17394)cm2/plant, leaf litter index (5.10) M2/M2, relative growth rate (1.71)mg/g/day, total chlorophyll amount (46.7) SPAD and representative efficiency of the plant (0.0124)G/cm2/day.

Keywords: tomatoes (Solanum lycopersicum.L), bacterial biofertilizers, yeast suspension, Morpho-physiological indicators. 

Full paper in Arabic: pdf