Role of Ochrobactrum Bacteria and Organic Matter in Plant Growth and the Content of N, P, and K Under Soil Salinity Stress
الباحث الأول:
Huda Krebit Hundi
الباحثين الآخرين:
,Ali Abdul majeed Noori, Mustafa Qais Hamid
المجلة:
Journal of Environmental Earth Sciences
تاريخ النشر:
5 مايو، 2025
مختصر البحث:
Organic matter increases biological activity within the root zone because it contains beneficial microbes that stimulate
vital processes. This study aimed to determine the effect of Ochrobactrum anthropi added to the soil as a single or mixed
so…
Organic matter increases biological activity within the root zone because it contains beneficial microbes that stimulate
vital processes. This study aimed to determine the effect of Ochrobactrum anthropi added to the soil as a single or mixed
solution with different concentrations of organic matter on the vegetative growth of the zinnia plant and its content of
nutrients. The study was conducted with a randomized complete block design (RCBD) with three replications. The plant
was grown in soil with a high salinity level of 8 ds m–1. Plant characteristics were estimated 30 and 60 days after planting
the plant. The treatment with the addition of bio-inoculum produced the best results; within 30 days, there was a 56.89%
increase in plant length; after 60 days, there was a 52.56% increase; additionally, there was a 52.56% increase in leaf count
within 30 days; after 60 days, there was a 53.50% increase; and finally, there was an increase in flower count. For plants
after 60 days, it reached 3.66%. With the addition of bio-inoculum to soil at a level of 3 gm kg–1 of organic matter, the
mixing treatment achieved the highest dry weight, 29.86%. The addition of bio-inoculum resulted in the largest and most
significant increase in chlorophyll content in leaves, reaching 18.76%. In the mixing addition of the biological inoculum
treatment, the organic content of the plant showed an increase in nitrogen (14.38%), phosphorus (21.18%), and potassium
(39.75%) at 2 and 3 gm kg–1 organic matter, respectively
