Effects of Dual inoculation of Rhizobium and phosphate-solubilising Bacteria on Nodulation, Yield and N and P uptake of field PEA (Pisum sativum L.).
2007
Yifru abera;Pant,L.M. and Asfaw Hailemariam(Researchers)
A field study was conducted at Sinana, during Bona (Aug-Dec) 200s cropping season to study the effect of dual inoculation of rhizobium and phosphate-solubilising bacteria (PSB) on nodulation any yield of pea. Thirteen treatments consistingof one rhizobium leguminosarum by. Pisum, two phosphate solubilisers; viz., Bacillus sp. or Pseudomonas sp., dried crushed bone (DCB) at 20 kg P ha-1 and their different combinations were compared in a randomized complete block design (RCBD) with three replications. Results showed that, inoculation of field pea with rhizobium and Bacillus sp. alone or with addition of DCB increased both number and dry weight of nodules seed yield per pod over the untreated control, inoculation of Pseudomonas sp. alone with or without DCB increased nodule dry weight and plant height significantly (P0.05). Combined inoculation of rhizobium and Pseudomonas sp. markedly increased plant height, grains per pod and straw yield. Dual inoculation of Rhizobium and Bacillus sp. increased all the above parameters and also seed yield of field pea. Dual inoculation of field pea gave comparable yield to that of the recommended fertilizer rate. Though microbial inoculants are low-cost inputs, the response to inculation depends on several soil factors. Therefore, more studies are needed on different agro-ecologies and soil fertility conditions to reach a sound conclusion and recommendation.
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