Journal of Food, Agriculture and Environment

The effect of biofertilizer on soybean seed vigor and field emergence

Author(s):

Iraj Alahdadi, Masoumeh Tajik ^*, Hamid Iran-nejad, Omid Armandpisheh

Recieved Date: 2009-05-30, Accepted Date: 2009-09-20

Abstract:

To study the effect of biofertilizer on soybean seed vigor under water deficit stress, two experiments were conducted under field and laboratory conditions. Field study was done as split factorial RCBD and laboratory experiment was conducted as a factorial CRD with 4 replications. The seeds were evaluated by cold test. Experimental factors were biofertilizer (seed inoculation with Bradyrhizobium japonicum, Bradyrhizobium japonicum + Pseudomonas fluorescens and Bradyrhizobium japonicum + Glomus mosseae), cultivar (Zalta Zalha and line Clark×Hobbit) and water deficit stress (irrigation after 50 [normal irrigation], 100 [mild stress] and 150 [intense stress] mm evaporation from pan Class A in parents field). Water deficit stress had negative effect on seed quality. Under field condition, the co-inoculation of the seeds with B. japonicum and P. fluorescens improved final field emergence and field emergence index under water deficit stress. Under lab condition, biofertilizer application was effective on all attributes. In the condition of normal irrigation, the inoculation of ‘Zalta Zalha’ seeds with B. japonicum and B. japonicum and seeds of Clark×Hobbit line with G. mosseae increased final germination percent and seedling vigor index. In mild stress, B. japonicum and G. mosseae inoculation of ‘Zalta Zalha’ and B. japonicum inoculation of Clark×Hobbit line increased primary stem length and seedling vigor index. In the condition of intense stress, the inoculation of Zalta Zalha cultivar with B. japonicum and G. mosseae and Clark×Hobbit line with B. japonicum and P. fluorescens increased primary stem length. Final germination percent, number of normal seedlings and seedling vigor index had significant and positive correlation with finally field emergence.

Keywords:

Pseudomonas fluorescens, Glomus mosseae, seedling vigor index

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Journal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 3&4
Category: Agriculture
Pages: 420-426

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