Effect of 2,4-D and inoculation with Azorhizobium caulinodans on maize

S. P. Saikia; S. P. Saikia; V. Jain; V. Jain; G. C. Srivastava; G. C. Srivastava

doi:10.1556/AAgr.54.2006.1.12

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Acta Agronomica Hungarica

Volume/Issue:: Volume 54: Issue 1

Effect of 2,4-D and inoculation with Azorhizobium caulinodans on maize

Authors:

S. P. Saikia

S. P. Saikia Division of Plant Physiology, Indian Agricultural Research Institute New Delhi, India

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S. P. Saikia

S. P. Saikia Division of Plant Physiology, Indian Agricultural Research Institute New Delhi, India

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V. Jain

V. Jain Division of Plant Physiology, Indian Agricultural Research Institute New Delhi, India

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V. Jain

V. Jain Division of Plant Physiology, Indian Agricultural Research Institute New Delhi, India

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G. C. Srivastava

G. C. Srivastava Division of Plant Physiology, Indian Agricultural Research Institute New Delhi, India

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, and

G. C. Srivastava

G. C. Srivastava Division of Plant Physiology, Indian Agricultural Research Institute New Delhi, India

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Pages:: 121–125

Online Publication Date:: 10 Apr 2006

Publication Date:: 01 Mar 2006

Article Category:: Research Article

DOI:: https://doi.org/10.1556/AAgr.54.2006.1.12

Keywords:: maize; maize; nodulation; nitrogen fixation; 4-D; 2; grain yield; Azorhizobium caulinodans

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Research over the last few years has shown that inoculation with nitrogen-fixing bacteria of the genus Azorhizobium presents an alternative for (or supplement to) chemical fertilization, mainly due to the capability of the bacteria to produce plant growth- promoting hormones. The Azorhizobium caulinodans strain ORS 571 in combination with 2,4-D was able to colonize the root interior of an Indian maize cultivar. After transplanting to pots, it was noticed that nodulated and Azorhizobium -treated plants showed higher chlorophyll content in the leaf and enhanced nitrate reductase activity, leading to higher yield as compared to the control plants (non-nodulated). A plant growth-promoting effect was clearly visible in all inoculated plants examined. nodulated plants treated with Azorhizobium had higher physiological activities as compared to plants treated only with Azorhizobium . Azorhizobium therefore creates potentially better symbiosis in the form of para -nodules and promotes a higher level of nitrogen fixation, leading to better growth and plant development, with reduced requirements for chemical fertilizers.

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Acta Agronomica Hungarica

Print ISSN:: 0238-0161

Online ISSN:: 1588-2527

Acta Agronomica Hungarica
Language	English Russian German French
Size
Year of Foundation	1950
Publication Programme	ceased
Volumes per Year
Issues per Year
Founder	Magyar Tudományos Akadémia
Founder's Address	H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher	Akadémiai Kiadó
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0238-0161 (Print)
ISSN	1588-2527 (Online)