Effect of Azospirillum spp. and Azotobacter spp. on the growth and yield of strawberry (Fragaria vesca) in hydroponic system under different nitrogen levels

Abstract

It is well established fact that bacterial species promotes plant growth. This growth enhancing activity was believed to be through different mechanisms such as synthesis of phytohormones, nitrogen-fixing, and biological control. For this reason, in this present investigation we have isolated and identified Azotobacter spp. and Azospirillum spp. through macromorphologically and micromorphologically in order to assess its effect on growth and yield of strawberry (Fragaria vesca) an Albion variety in hydroponic system. The inoculation and coinoculation of bacterial culture was performed in combination with three nitrogen levels (50, 100 and 150 ppm), growth parameters such as plant height, root length, fresh and dry weight of root and aerial parts, leaf area, chlorophyll content, nutrient content, solid soluble, caliber, yield/plant. It is observed that in T8 (co-inoculation in100 ppm N) group showed significantly increase in plant height (18.57cm), chlorophyll content (48.57 Soil Plant Analysis Development-SPAD), fresh root weight (25.82g) and dry root weight (5.93g), while in treatment group T5 (Azotobacter spp. 100ppm of Nitrogen) and T6 (Azotobacter spp. 150ppm of Nitrogen) showed significant increase in root length, leaf area, dry and fresh weights of aerial parts. The N content of leaf for all treatments was in the ranges of 2.42 -2.83 % that is suitable for cultivation. Similarly, the treatment group T5 and T6 showed increase in yield per plant and soluble solids content. So, Azotobacter and Nitrogen treatment has growth related benefits in strawberries under hydroponic system.

Untitled

“…A one-month experiment might be too short to demonstrate the effect of MCU on shoot parameters. Contrary to our results, positive effect of urea application combined with biofertilizer on plant height was reported for potted and hydroponic strawberry during 60-120 days (Rueda et al, 2016;Beer et al, 2017;Reddy and Goyal, 2020). In their study, application of biofertilizers and N fertilizer increased the plant height, plant spread, number of leaves per plant and crown diameter significantly.…”

The Composition of Root-Associated Bacteria and Fungi of Astragalus mongholicus and Their Relationship With the Bioactive Ingredients

“…Other ecological effects and functions of Inquilinusit remained still unknown and needed to be further investigated. Phyllobacterium , which is reported to increase the plant growth, fruit yield, or mineral content in strawberry, Capsicum annuum , and cucumber, is considered a plant probiotic ( Ipek et al, 2014 ; Silva et al, 2014 ; Pii et al, 2016 ; Rueda et al, 2016 ). Moreover, Phyllobacterium can promote the production of some bioactive compounds in strawberries ( Flores-Felix et al, 2015 , 2018 ).…”

Archaea, bacteria and termite, nitrogen fixation and sustainable plants production

“…and Azotobacter spp. increased the growth and final yield of strawberry under hydroponic condition compare to the control treatment (Rueda et al, 2016). Azotobacter can be an appropriate option for nitrogen deman and best alternative to nitrogen fertilizer in wheat cultivation which may lead to higher productivity (Mahato and Kafle, 2018).…”