Comparative Study of Different Carriers Inoculated with Nodule Forming and Free Living Plant Growth Promoting Bacteria Suitable for Sustainable Agriculture

Abstract

Rhizobium and pseudomonas are bacteria that's are able to increase plant growth and provide nutrients to them in any condition even in stress condition and also have different plant growth characteristics such solubilized the minerals, fix the nitrogen and also chelate the inorganic compound for example iron and make it utilizable to plants thus making it beneficial as microbial bio fertilizer and known it plant growth promoting rhizobacteria. The aim of this study was to determine potential five different carrier material for survival of PGPR (Rhizobium and pseudomonas strain) isolated from Trigonella foenum Graecum at room temperature for 8 weeks. Samples from the carrier materials (Sterilized and Non-sterilized) were taken every week and tested for the survivability and sustainability of the two different PGPR in it by determining viable cell count (CFUg-1). The result showed that after eight weeks of storage treatment of carrier Coriander husk, saw dust and Begasse stored at room temperature (25-28°C) was able to sustain the highest viable cell number of Co inoculation of Rhizobia and Pseudomonas followed by individual. These two carrier also had acceptable changes in pH value and moisture content followed by wood ashes and sand.

Biofertilizers: A Sustainable Strategy for Organic Farming That Would Increase Crop Production and Soil Health

“…Rhizobium, a nitrogen-fixing symbiotic bacterium, and pseudomonas, a rhizobacterium that promotes plant development are important bacteria responsible for the increment of crop growth and supply the essential nutrients to the crops in any situation such as drought conditions. These microorganisms are essential for the solubilization of minerals, and atmospheric nitrogen in leguminous plants and break the inorganic compound into small particles such as iron making them the available form to the plants which makes them the helpful microbial biofertilizer, hence the bacteria called as crop growth boosting rhizobacteria (Kumar Arora, 2014). The soil-living organisms which are near to crop root zone also called "rhizosphere" is nearly linked to plant growth and yield and are known to help significantly in enhancing organic farming productivity, crop yield, and soil fertility.…”

“…It makes using biofertilizers easier and significantly increases the product's shelf life because it is contained in an appropriate carrier, like lignite or peat (Ritika and Utpal, 2014). Manure, intercrop, green manure, or organically supplemented chemical fertilizers are not the same as biofertilizers (Sharma et al, 2022) which are also simply known as bio formulations (Kumar Arora, 2014). Understanding biofertilizers, their needs and varieties, and their function in organic agriculture is the primary goal of this research.…”

Microbial bioformulation: a microbial assisted biostimulating fertilization technique for sustainable agriculture

“…The degree of support of carrier material depends upon the nutrient and moisture holding status of the carrier. The high moisture retaining carriers having a low C:N ratio and pH near 7 is considered to be the best for increasing the shelf life of the bioformulation ( Arora et al., 2014 ; Sohaib et al., 2020 ). Arora et al.…”

“…The degree of support of carrier material depends upon the nutrient and moisture holding status of the carrier. The high moisture retaining carriers having a low C:N ratio and pH near 7 is considered to be the best for increasing the shelf life of the bioformulation (Arora et al, 2014;Sohaib et al, 2020). Arora et al (2014) tested the capacity of survival of different carrier materials such as sand, begasse, saw dust, wood ash, and coriander husk and found that higher moisture retaining carrier i.e., Coriender husk which retains 7.5 times moisture is the best for sustaining the bacterial survival.…”

“…The high moisture retaining carriers having a low C:N ratio and pH near 7 is considered to be the best for increasing the shelf life of the bioformulation (Arora et al, 2014;Sohaib et al, 2020). Arora et al (2014) tested the capacity of survival of different carrier materials such as sand, begasse, saw dust, wood ash, and coriander husk and found that higher moisture retaining carrier i.e., Coriender husk which retains 7.5 times moisture is the best for sustaining the bacterial survival. However, another experiment conducted by Sohaib et al (2020) found that carriers having a low C:N ratio i.e., Compost and Biogas slurry are more effective in increasing the shelf life as well as plant growth and development of wheat over carriers having high C:N ratio.…”