Nitrogen fixation efficiency of several rhizobial strains in symbiosis with Vigna angularis (L.) Willd., Vigna radiata (L.) Wilczek and Vigna mungo (L.) Hepper under field conditions
2008
Delić, D., Institute of Soil Science, Belgrade (Serbia) | Stajković, O., Institute of Soil Science, Belgrade (Serbia) | Kuzmanović, Đ., Institute of Soil Science, Belgrade (Serbia) | Rasulić, N., Institute of Soil Science, Belgrade (Serbia) | Maksimović, S., Institute of Soil Science, Belgrade (Serbia) | Miličić, B., Institute of Soil Science, Belgrade (Serbia)
The aim of our research was to investigate the possibility of cultivation of Vigna angularis, V. radiata and V. mungo as newly introduced crops in Serbia by applying seed inoculation with four active rhizobial strains in the form of N microbial fertilizer. The effects of seed inoculation with four active rhizobial strains both individually and in combination with mineral N were estimated on these Vigna species. Field experiment organized in a randomized complete block split-plot with three replications was performed in two different types of soil. The effect of seed inoculation on grain yield, grain crude protein (CP) content and grain CP yield was done. Inoculation with some rhizobial strains resulted in a significant increase in grain yield for all Vigna species tested. The average increase due to inoculation was 15-40% over the uninoculated control. Inoculation resulted in higher nitrogen uptake. The strain 542 was highly effective with all investigated species, while other strains differed in their effects depending on plant species. The highest grain yield of V.mungo and V. radiata was achieved by inoculation with some strains in combination with 40 kg/ha. The results indicate that effective strains may be applied as N microbiological fertilizer to soils in Serbia.
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