Effects of inoculation by bradyrhizobium japonicum strains on nodulation, nitrogen fixation, and yield of lablab purpureus in Algeria

Yıl 2014, Cilt: 1 Sayı: Özel Sayı-2, 1870 - 1876, 01.03.2014

Benselama Amel Tallah Sihem Ounane S.mohamed Bekki Abdelkader

Öz

With the aim of acquiring a better understanding of ecological growth and biomass of Lablab purpureus and to assess the effect of Bradyrhizobium japonicum strains on the performance of Lablab purpureus and production of Specific biofertilizers in this legume, an experiment was conducted during the February 2012 to May 2013 growing season. Inoculation of Lablab purpureus with Bradyrhizobium japonicum and grew them in a greenhouse for 2 months under varying light (L), phosphorus (P), and nitrogen (N) treatments. I obtained the following results: (1) L, P × N, and L × P × N treatments affected every response variable, but most increases. All the nodulation parameters, namely, nodulation rating, nodule number per plant, nodule volume per plant, and nodule dry weight were significantly influenced by the main effect of Bradyrhizobium japonicum strains alone. The results obtained were analyzed statistically by ANOVA using the software statistica and had shown that the main effect of Lablab purpureus was highly significantly. The yield and the yield components such as number of pods per plant, number of seeds per pod, seed yield, thousand seed weight, above-ground dry biomass, and total nitrogen uptake were highly significantly affected by inoculation of Bradyrhizobium strains alone. A yield increase of 80% was obtained due to inoculation over the uninoculated control. Effect was also significant on number of pods per plant, seed yield, thousand seed weight, harvest index, and total nitrogen uptake. Variety and Bradyrhizobium strain interaction was detected on number of nodules per plant and nodule dry weight

Anahtar Kelimeler

Lablab purpureus, inoculated, Bradyrhizobium japonicum, analyzed statistically, nodulation

Effects of inoculation by bradyrhizobium japonicum strains on nodulation, nitrogen fixation, and yield of lablab purpureus in Algeria

Öz

Anahtar Kelimeler

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Kaynakça

• nodulation by inoculating compatible and effective Bradyrhizobium japonicum strains significantly increase the soybean crop yield. Bradyrhizobium japonicum
• isolates showed significant increase in root length and dry weight. Dhami and Prasad (2009) concluded that inoculation of Rhizobium increase the accumulation of N in the root and results in increase in root length and also reported that nitrogen content in soil of inoculated experimental pots increased up to 13- 33%.
• In the present study, it is clear that inoculation of Bradyrhizobium japonicum is showing an increased nitrogen fixation. It is clearly revealed that seedling growth in Lablab purpureus can be enhanced by inoculating the seeds with the effective Bradyrhizobium japonicum strains.
• recommended for lablab purpureus inoculum production. an alternative strain be can