Abundance of peanut Rhizobium as affected by environmental conditions in Iraq

Yousef, A.N.; Al-Nassiri, A.S.; Al-Azawi, Salwa K.; Abdul-Hussain, N.

doi:10.1016/0038-0717(87)90028-9

Cited by 12 publications

(6 citation statements)

References 9 publications

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“…Cropping history and soil parameters are included in a study of the abundance of Bradyrhizobium sp. nodulating peanut in Iraqi soils (31). While the results of our investigation and that of Yousef et al (31) demonstrate the effect of legumes on rhizobial populations, correlations with other ecological determinants are not in agreement.…”

Section: Resultscontrasting

confidence: 91%

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Ecological Indicators of Native Rhizobia in Tropical Soils

Woomer

Singleton

Bohlool

1988

Appl Environ Microbiol

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The relationship between environment and abundance of rhizobia was described by determining the populations of root nodule bacteria at 14 diverse sites on the island of Maui. Mean annual rainfall at the sites ranged from 320 to 1,875 mm, elevation from 37 to 1,650 m, and soil pH from 4.6 to 7.9. Four different soil orders were represented in this study: inceptisols, mollisols, ultisols, and an oxisol. The rhizobial populations were determined by plant infection counts of five legumes (Trifolium repens, Medicago sativa, Vicia sativa, Leucaena leucocephala, and Macroptilium atropurpureum). Populations varied from 1.1 to 4.8 log1o cells per g of soil. The most frequently occurring rhizobia were Bradyrhizobium spp., which were present at 13 of 14 sites with a maximum of 4.8 log10 cells per g of soil. Rhizobium trifolii and R. leguminosarum occurred only at higher elevations. The presence of a particular Rhizobium or Bradyrhizobium sp. was correlated with the occurrence of its appropriate host legume. Total rhizobial populations were significantly correlated with mean annual rainfall, legume cover and shoot biomass, soil temperature, soil pH, and phosphorus retention. Regression models are presented which describe the relationship of legume hosts, soil climate, and soil fertility on native rhizobial populations.

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Section: Resultscontrasting

confidence: 91%

“…Yousef et al (31) relate several environmental factors to the abundance of peanut rhizobia in 66 soil samples collected from various locations in Iraq. The abundance of Bradyrhizobium spp.…”

mentioning

confidence: 99%

Ecological Indicators of Native Rhizobia in Tropical Soils

Woomer

Singleton

Bohlool

1988

Appl Environ Microbiol

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“…The soil of the study sites had the native rhizobia capable of nodulating peanut greater than 10 2 g −1 of soil. Large number of native rhizobia in the two soils could be because of the presence of conducive soil properties (Yousef et al 1987;Thrall et al 2007;Drew et al 2012) and cultivating the host plant for long time (Chemining'wa and Vessey 2006;Kimiti and Odee 2010). However, the previous experiment conducted this region showed that inoculation of locally isolated rhizobia improved the yield of common bean (Anteneh 2016), Fababean (Argaw et al 2012a) and Field pea (Argaw et al 2012b), though the soil had > 10 3 rhizobia g −1 soil.…”

Section: Discussionmentioning

confidence: 96%

Development of environmental friendly bioinoculate for peanut (Arachis hypogea L.) production in Eastern Ethiopia

Argaw

2017

Environ Syst Res

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Background: Bacterial bioinoculate is one of environmentally friendly input for crop production. Several works revealed that effectiveness of Rhizobium bioinoculant have been affected by the native rhizobia population. Hence, this study was initiated to evaluate the effect of selected Bradyrhizobium in nodulating peanut in the major growing areas of Ethiopia. Methods:The effect of eight effective Bradyrhziobium vis-a-vis 20 kg N ha −1 and the control check on the nodulation and yield of two peanut cultivars (Sedi and Werer 942) at Babile and Fedis, eastern Ethiopia, during 2013 cropping season was evaluated. Results:The results showed that the inoculation, location and cultivar and their two and three ways interaction had a significant influence on the nodulation and grain yield. Inoculation of Bradyrhizobium increased the nodule number, nodule dry weight, number of seeds per plants, total pods weight, hundred seeds weight, total biomass yield, grain yield and shelling % up to 37, 24.9, 22.4, 22.5, 5.5, 26.2, 35.8 and 24.1%, respectively. Isolate HUGNR-29 was found to be more effective as it scored the highest nodule dry weight and grain yield. Application of inorganic N increased the yield and yield components of peanut in either of locations. Though the statistically better effective nodule % was recorded at Babile, significantly higher nodule number, nodule dry weight, and total N accumulation were obtained from Fedis than Babile site. Significantly higher total pods weight, hundred seeds weight, total biomass weight, grain yield and total plant N accumulation was recorded with the cultivar werer-962 than those produced with Bati-Sedi. Conclusions:The result showed that Bradyrhizobium inoculation is essential to improve the peanut production through environmentally and economically sustainable ways though the soil native rhizobia nodulating peanut was high. Peanut cultivar and study site based rhizobia inoculant development is also important.

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“…However, while cowpea had been cultivated at Nkoemvone, the site at Nkometou had only been cultivated with groundnut that is known to be nodulated only by a subgroup of Bradyrhizobium spp. (Yousef et al, 1987). Legumes serve to maintain rhizobia in the soil through rhizosphere effects and senescence of nodules.…”

Section: Serial Dilution Number Of Nodulated Units By Each Varietymentioning

confidence: 99%

“…Legumes serve to maintain rhizobia in the soil through rhizosphere effects and senescence of nodules. Studies by Woomer et al (1988) and Yousef et al (1987) highlighted the effects of legumes on rhizobial populations. They reported that groundnut rhizobia which prefer a pH ranging from 7.6 to 8.1, are not favored by increasing soil organic carbon over 1%.…”

Section: Serial Dilution Number Of Nodulated Units By Each Varietymentioning

confidence: 99%

Assessment of indigenous Bradyrhizobia spp. population levels in low phosphorus soils of southern Cameroon using cowpea (Vigna unguiculata L. Walp) as trap crop

Fonji¹,

Begoude²

2014

J. Ecol. Nat. Environ.

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4 cells per gram of soil sample was estimated whereas this population was 5.8 x 10 5 in Nkoemvone. Overall, population sizes of rhizobia using the three varieties were higher in Nkoemvone soil than in Nkometou soil. The cowpea variety 58-77 seemed to have high nitrogen fixation potentials as it formed nodules more than the two other varieties in both soils. The levels of Bradyrhizobia populations observed in the two sites were adequate to give satisfactory results on nodulation and nitrogen fixation. This suggests that cowpea production in southern Cameroon does not require inoculation.

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Abundance of peanut Rhizobium as affected by environmental conditions in Iraq

Cited by 12 publications

References 9 publications

Ecological Indicators of Native Rhizobia in Tropical Soils

Ecological Indicators of Native Rhizobia in Tropical Soils

Development of environmental friendly bioinoculate for peanut (Arachis hypogea L.) production in Eastern Ethiopia

Assessment of indigenous Bradyrhizobia spp. population levels in low phosphorus soils of southern Cameroon using cowpea (Vigna unguiculata L. Walp) as trap crop

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