Integrative effects of biostimulants and salinity on vegetables: Contribution of bioumik and Lithovit®-urea50 to improve salt-tolerance of tomato
Laen...
Kuupäev
2022
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
The separate and combined effect of lithovit-urea50 and bioumik was tested on
salt-stressed tomato crops. Salinity was induced using three different NaCl solutions (2, 4 and
8 dS m-1
). Under the salinity effect, all aspects of plant growth were inhibited. Total chlorophyll
and carotenoids reduced from mg g-1 FW and 1.1 mg g-1 FW at 2 dS m-1 to reach 1.01 mg g-1 FW
and 0.66 mg g-1 FW at 8 dS m-1 in control plants. Plants treated by the combination of both
products had the highest chlorophyll and carotenoids content with 2.24 mg g-1 FW and
1.34 mg g-1 FW, 1.88 mg g-1 FW and 1.05 mg g-1 FW, and 1.39 mg g-1 FW and 0.86 mg g-1 FW
respectively at 2, 4 and 8 dS m-1
. Treating plants by this combination maximized flower number,
fruit weight, yield and fruit diameter at 2 dS m-1 (17 flowers, 47.93 g, 431.1 g plant-1 and 3.23 cm
respectively) and 4 dS m-1 (15flowers, 36.45 g, 291.85 g plant-1 and 2.8 cm respectively). The
separate application of bioumik minimized cell electrolyte leakage at 2 dS m-1 (8.82%) compared
to control (11.43%). Additionally, plants treated by lithovit-urea and bioumik had the highest
relative water content with 107.3%, 96.5% and 91.2% respectively at 2, 4 and 8 dS m-1
. N, Ca
and Mg in roots were significantly the highest at 2 dS m-1 (4.5%, 2.6% and 0.5% respectively),
at 4 dS m-1 (3.74%, 2.49% and 0.48% respectively) and at 8 dS m-1 (3.21%, 2.61% and 0.32%
respectively). K content in roots was maximized following the separate application of bioumik
with 3.21% at 2 dS m-1 and 2.55% at 8 dS m-1
. Conclusively, lithovit-urea and bioumik helped
plants in tolerating salt-stress with an optimal effect obtained after their combination.
Kirjeldus
Received: June 1st, 2021 ; Accepted: July 5th, 2021 ; Published: November 3rd, 2022 ; Correspondence: tony.sajyan@st.ul.edu.lb
Märksõnad
biostimulants, growth, physiology, salinity, small scale fertilizers, tomato, articles