Yes, it may be consider a tool as they help in 30% more soil aggregation beside helping to build up more polysaccharide producing organisms. The moisture retention capacity of the soil may also enhanced by 8 to 10%.
Definitely you may go ahead, some of these organisms may also release more phosphatases and organic acids helping more exploitation of plant unavailable P for nutrition.
The question put up by Mr.Khan is important one.I compliment colleagues for good discusion.We know the structure improvement by mycorrhizae by producing glomalin. Many beneficial microbes produce hydrolyzing enzymes, growth promoting substances apart from fixing or solubilizing,mobilizing and accessing nutrients.So what is the real mechanism of drought stress tolerance offered by selected species of microbes.
If you want to add mycorrhiza as suggested by Dr. Antoun, then you go for Glomus fasciculatum as we find that it is the most compatible mycorrhiza with most of the EPS producing bacteria.
Dr. Rao , some of the mechanisms are modification in phytohormonal levels, antioxidant defense, production of heat-shock proteins (HSPs), dehydrius and volatile organic compounds, that plays significant role in acquisition of drought tolerance. Please go through article by Kaushal , M and Wani, S. P (2016)./ Annals of Microbiology 66, 35-40.
Ya. as mentioned by Dr Tarafdar production of volatile compounds that enhance osmotic stress tolerance and change in hormonal level along with the production of compatable solutes are the real mechanisms of drought stress tolerance but, Dr, J. C. Tarafdar Some time we characterize bacteria as PGPR but when we apply it into the field they are not too much beneficial what is the reason for that.
The reasons may be they are not strong enough to compete with the native population. If they establish well in the system then they will definitely work. Have you checked their population in the field say after a week or 15 days of application? To my experience I find that if they establish well till the critical growth period of the plants then they were working well.
In field we can say about competition, but some time they dont show enhanced affect in pots also.
In pots also you may expect competition as everywhere soil is involved and microbes present in native soil does not normally allow others if not compatible.
Then may be your strain is not efficient enough or the environment does not favour their optimum growth. In sterile soil you are also killing other beneficial organisms who are basically helping in nutrient transformation. Have you ever tested the population build-up? I dont know your soils, but in most of the soils some micronutrients becomes available in toxic level after sterilisation.
- Badges
- Science topic
- Similar topics
- Biological Science
- Microbiology