Dear colleagues
During dealing with chickpea rhizobium I have seen it produce only 4/5 noudle/plant. is it enough to meet up the nitrogen requirement of a single plant? I want to increase the nodule number per plant.Which factors should I taken into consideration? please
Please have a look at these useful links.
https://www.researchgate.net/publication/236672734_Coinoculation_of_chickpea_with_Rhizobium_isolates_from_roots_and_nodules_and_phytohormone-producing_Enterobacter_strains
http://www.tandfonline.com/doi/abs/10.1080/00103624.2012.639110
http://link.springer.com/article/10.1007/BF00264351
http://researchdirect.westernsydney.edu.au/islandora/object/uws:7062
http://dergipark.ulakbim.gov.tr/ejss/article/view/5000184130
Article Coinoculation of chickpea with Rhizobium isolates from roots...
HI Hani Antoun
Yes all nodules were active I mean pink in color and big in size
Color of the nodule is the only acid test to know , whether or not , the given nodule is active/effective ..?
Nice work here ...
Although relationships among plant, biological N2 fixation, and response to soil and environmental conditions have received considerable coverage in the scientific literature, a comprehensive summary and interpretation of these interactions with specific emphasis are lacking. Fluctuations in pH, nutrient availability, temperature, and water status, among other factors, greatly influence the growth, survival, and metabolic activity of nitrogen fixation bacteria. The subsequent inhibition of nitrogenase would result in O2 accumulation in the infected zones, inducing the decrease in nodule permeability. Poor nodulation of legumes in arid soils is likely due to decreases in population levels of rhizobia during the dry season. Fixation, therefore, also tends to decrease with legume age, mainly because of the concomitant increase in soil N. Calcium deficiency, with or without the confounding influence of low pH also affects attachment of rhizobia to root hairs. Rhizobia may have different tolerances to soil acidity factors than the host plant. Relatively, high-root temperature has also been shown to influence infection, N2- fixation ability, and legume growth. Also, root nodulation by the bacteria can be dependent on the
formation of mycorrhiza.Spurce ; African Journal of Agricultural Research Vol. 7(12), pp. 1782-1788, 26 March, 2012 DOI: 10.5897/AJARX11.034..PDF enclosed for further reading...
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