|
Pak. J. Bot., 47(3): 1199-1204, 2015. |
Back to Contents | ||||
|
|
Updated: 23-06-15 | ||||
|
|
ENHANCEMENT OF SOYBEAN (GLYCINE MAX L.) GROWTH BY BIO-FERTILIZERS OF NOSTOC MUSCORUM AND NOSTOC RIVULARE
ESSAM NAGEH SHOLKAMY*, HESHAM M. EL-KOMY2 AND HAYSSAM M. ALI1,3
Abstract: In the present study the nitrogenase activity of Nostoc muscorum and Nostoc rivulare was evaluated in vitro; the test showed that Nostoc muscorum and Nostoc rivulare have the ability to fix nitrogen. In a pot experiment under field conditions, the results of the present study showed that inoculation of the soybean plant with Nostoc muscorum and Nostoc rivulare, either alone or in combination with N-fertilizer at 50 and 100 kg N/ha, caused a significant increase in the growth of these plants, as reflected in plant height, leaf area, weight of plant as well as the legume weight of soybeans. The combination of biofertilization and N-fertilization, especially at 100 kg N/ha, had more effect on both the growth of soybeans and nitrogenase activity compared to biofertilization alone. Nostoc muscorum and Nostoc rivulare are a promising biofertilizers for achieving an efficient association between N2 fixing cyanobacteria and soybeans; and thus enhancement of the growth.
Key words: Cyanobacteria, Soybean, Biofertilization, Ammonium sulphate.
1Department of Botany and Microbiology, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia 2Department of Botany and Microbiology, Faculty of Science, Minia University, Minia, Egypt 3Department of Timber Trees Research, Sabahia Horticulture Research Station, Horticulture Research Institute, Agriculture Research Center, Alexandria, Egypt *Corresponding author’s e-mail essam_92003@yahoo.com |
||||
|
|
|
||||
| Back to Contents |
|
Back to Contents | |||
|
|
|||||