RESPONSE OF SOYBEAN (GlycinemaxL. Merrill) PRODUCTIVITY TO BIOFERTILIZER INOCULANTS COMBINED WITH ORGANIC FERTILIZERUNDER SANDY SOIL CONDITIONS

Rabab A.A.Amer; Abo El-Soud; Hebe B.A.Kandil; Amani M; Gihan M. Salem; Sonya H. Mohamed

doi:10.34016/pjbt.2022.19.1.29

Authors

Rabab A.A.Amer Department of Agricultural Microbiology; Soils, Water and Environmental Research Institute; Agricultural Research Center; Giza; Egypt. P.O. Box, 12619
Abo El-Soud Department of Agricultural Microbiology; Soils, Water and Environmental Research Institute; Agricultural Research Center; Giza; Egypt. P.O. Box, 12619
Hebe B.A.Kandil Department of Agricultural Microbiology; Soils, Water and Environmental Research Institute; Agricultural Research Center; Giza; Egypt. P.O. Box, 12619
Amani M Department of Agricultural Microbiology; Soils, Water and Environmental Research Institute; Agricultural Research Center; Giza; Egypt. P.O. Box, 12619
Gihan M. Salem Department of Agricultural Microbiology; Soils, Water and Environmental Research Institute; Agricultural Research Center; Giza; Egypt. P.O. Box, 12619
Sonya H. Mohamed

DOI:

https://doi.org/10.34016/pjbt.2022.19.1.29

Keywords:

Soybean, SEWRI and Okaden,, Bradyrhizobiumjaponicum, Actinomycetes, Bacillus megatherium, Organic fertilizer, dehydrogenase activity, Crude protein percentage.

Abstract

One of the most important food sources for humans is the soybean crop because it is an important source of
protein and oil, which makes it important to improve its productivity under stress conditions, especially in sandy lands.
Therefore, the study aimed to improve soybean productivity by using biological fertilizers in the presence of organic
fertilizer and low concentration of mineral fertilizer under new sandy soil conditions.The experiment was carried out in
two summer seasons of 2020 and 2021 at the Ismailia Research Station, Ismailia Governorate. The used inoculates in
the experiment were,an identified Streptomyces strain,Bacillus megatherium, (SEWRI) and Bradyrhizobiumjaponicum
(Okaden) as,biofertilizer agents.Activated dose of N-fertilizer was used in seven different treatments. Results showed
that Bradyrhizobia+Bacillus+actinomycetes+20 kg nitrogen fertilizer/fed was effective in the presence of organic
fertilizer compared to organic fertilizer-free soil or un-inoculated+70 kg N/fed. Bradyrhizobia+ Bacillus+Actino+20 kg
N/fed (T14) was the most effective treatment in the presence of organic fertilizer compared to organic fertilizer-free soil
or uninoc.+70 kg N/fed. Promising expected yields of each of seeds and straw (Ton/fed) of soybean plants cultivated
under different fertilizers and biofertilizers conditions expected was clear from increasing the yield seed up to
1.8400Ton/fed in the presence of organic fertilizer (T14) compared to 1.4565 when soybean was cultivated in the
absence of organic fertilizer (T01). This could be supported by the amounts of NPK, N-percentage, and protein content,
numbers of branches and pods and dehydrogenase activity in soil. Significant differences between the straw yield in the
presence and absences of organic fertilizer as well as biofertilizers were recorded. Organic fertilizer application
recorded the highest significant increases in nodulation status, growth and straw nitrogen content as well as harvest
parameter of soybean compared with those un-received organic fertilizer