Performance of chickpea, lentil and lupin nodulated with indigenous or inoculated rhizobia micropartners under nitrogen, boron, cobalt and molybdenum fertilization schedules

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Abstract
Chickpea (Cicer arietinum), lentil (Lens esculenta) and lupin (Lupinus albus) responded to inoculation with their respective symbiotants:Rhizobium loti, Rhizobium leguminosarum biovarviceae andBradyrhizobium sp. (Lupinus) alone or with (NH4)2SO4 at 30 ppm N. Soil application of Na2MoO4.2H2O at 3 ppm Mo, CoCl2.6H2O at 2 ppm Co2+ or Na2B4O7.10H2O at 1 ppm B with 0 and 30 ppm N increased nodule weight and plant dry weight and N-content 60 days after sowing and seed yield, seed size and the N and P contents of seed. Nodule numbers slightly decreased with application of such chemicals. Mo enhanced performance of the three plants more than Co and B. Yield, total N and P-contents of lupin were comparable with those of chickpea or lentil and lupin had the highest levels of both N2-fixation and N absorption from the fertilizer. IndigenousR. leguminosarum biovarviceae was more established in the soil compared with the other two, chickpea and lupin, micropartners.

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