Nsreen Dib(1)*, Alisar Shaabow(1), Ammar Asekriyeh(1), Omar Hamoudi(1), Amal Haj Hassan(1), Ammar Abbas(1), Soulaf Haloum(1) and Rami Adraa(1)
(1). General Commission for Scientific Agriculture Research, Syria.
(*Corresponding author: Dr. Nsreen Dib. E-Mail: nsreendibsh@gmail.com, Mob: 0934373387).
Received: 17/05/2023 Accepted: 25/09/2023
Abstract:
The research was carried out at the Agricultural Scientific Research Center in Lattakia, within a 400 m2 greenhouse planted with lettuce, during the fall of 2022, with the aim of studying the effect of using bio fertilization on some parameters of vegetative growth, quality and productivity of lettuce plants. The experiment was divided according to the randomized complete block design, where the experiment was included three transactions distributed as follows: 1.soil control without fertilization, 2.fertilization By injecting the soil with the bio fertilizer Beauveria bassiana (Bb).3. fertilizing the soil with the bio fertilizer Bacillus subtilis (Bs). The results showed that the bio fertilizers contributed to improving the vegetative growth characteristics of lettuce compared to the control. The highest stem weight was observed in the bio fertilizer (Bb) treatment (99.67 g) followed by the bio fertilizer (Bs) treatment (71 g) compared to the control (68 g). Bio fertilizer (Bb) was superior in terms of its effect on pulp weight (202g) compared to bio fertilizer (Bs) (97.3g) and the control (145g). Bio fertilizer (Bb) also contributed to an increase in root length (16.3 cm) compared to bio fertilizer (Bs) and control (12 and 12.3 cm), respectively. Bio fertilization contributed to an increase in the average representative surface area and the leaf surface index compared to the control with clear significant differences, and the highest value for them was recorded in the treatment of bio fertilizer ((Bs 7924 S2 / plant and 4.95). As for the productivity criteria, the two types of bio fertilizer contributed to improving the productivity parameters compared to the control, where the highest plant weight was recorded in the bio fertilizer treatment (Bb) (811.7 g), followed by the treatment of bio fertilizer (Bs) (641 g) compared to the control (583.7 g).The results also show the role of bio fertilizer in increasing productivity per unit area. The productivity per unit area in the bio fertilizer (Bb) treatment was 5.07 kg and in the bio fertilizer (Bs) treatment 4 kg The treatment with both types of bio fertilizer contributed to an increase in the percentage of dissolved solids (4.56% and 3.7%) for each of the bio fertilizers (Bs). ) and biofertilizer (Bb) respectively. The average percentage of dry matter percentage in the biofertilizer treatment (Bs) was 6.60% and in the bio fertilizer treatment (Bb) 5.37% compared to the control treatment 5.82%. Thus the results show the role of biofertilizers in plant growth as a source sustainable and continuous.
Keywords: lettuce, bio fertilization, greenhouse, Beauveria bassiana, Bacillus subtilis, nitrate concentration, Yield.
Full paper in Arabic: pdf