Population dynamics of soybean root-nodule bacteria in latosol soil used for upland and lowland rice/soybean cropping systems in West Java, Indonesia

Simanungkalit, R.D.M.; Indrasumunar, Arief; Pratiwi, Etty; Hastuti, Ratih Dewi; Roughley, R. J.

doi:10.1016/0038-0717(95)98641-z

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…Inoculation of soybean seeds with proper bacterial strains has been reported to increase seed production by 70-75% [76]. According to Simanungkalit et al [77], there have been good responses by soybean to inoculation with Bradyrhizobium japonicum expressed in terms of both the proportion of nodules (Fig. 2) formed by the inoculum and seed yield.…”

Section: Effects Of Bradyrhizobium Japonicum Inoculation On Nitrogen ...mentioning

confidence: 99%

Effects of Bradyrhizobium japonicum and Phosphorus Supplementation on the Productivity of Legumes

Nyoki

2014

IJPSS

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Most soils in sub-Saharan Africa are depleted and lack important nutrients for proper plant growth and development. The declining trend of soil fertility pronounced in different parts of Africa is attributed to different factors such as continuous cropping without soil replenishment and land degradation leading to poor grain yield of legumes. Nitrogen and phosphorus are among the most limiting nutrients for plant growth as they play different roles in the biochemical processes of plants. Phosphorus is a fundamental component of substances that are building blocks of genes and chromosomes. Adequate supply of phosphorus is essential for development of new cells and the transfer of the genetic code from one cell to another during cell formation. Nitrogen is an essential constituent of plant cells at structural, genetic and metabolic levels, involved in many processes of plant growth and development leading to yield and quality of harvested organs. Traditionally, small-scale farmers use little or no farm-yard manure and chemical fertilizers to improve soil nutrition. However, these fertilizers are expensive to be afforded by small-scale farmers. The alternative to this is the use of cheap and easily applied biofertilizer such as Rhizobium bacteria that can fix atmospheric nitrogen to the form that can be taken by plants. The potential role of rhizobia inoculants and P application with respect to growth, nitrogen fixation, nutrient uptake, total leaf chlorophyll content, and grain yield of legumes

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Section: Effects Of Bradyrhizobium Japonicum Inoculation On Nitrogen ...mentioning

confidence: 99%

Effects of Bradyrhizobium japonicum and Phosphorus Supplementation on the Productivity of Legumes

Nyoki

2014

IJPSS

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“…It was observed that indigenous rhizobial strains, capable of nodulating soybean, are mainly present in soils cultivated for a long period with soybean. This is especially the case in soils that favour the growth of soybean such as Java, where the numbers of indigenous and adapted soybean rhizobial bacteria may reach high levels (>10 4 cells per gram of soil) (Simanungkalit et al 1995). The presence of high numbers of competitive but ineffective indigenous rhizobial strains may interfere with the inoculation practice and has been considered as the main reason for ambiguous results on soybean inoculation in Indonesia (Saono 1988).…”

Section: Introductionmentioning

confidence: 99%

Characterisation of Soybean Rhizobial Strains From Java and Sumatra

Waluyo

Lie

Mannetje

et al. 2013

Indones. J. Agric. Sci.

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To get insight in the structure of soybean rhizobial population native to Indonesian soils, a thorough survey of the occurrence of the soybean rhizobia were conducted in several locations in Java and Sumatra. A total of 51 different isolates of rhizobial strains were characterised phenotypically based on their symbiotic properties, and genetically using amplified ribosomal DNA restriction analysis (ARDRA). Based on their nodulation capacity on both soybean and the native legume mungbean, these rhizobial strains could be divided into a group of 16 strains specific for soybean only and another group of 35 promiscuous strains that nodulated both leguminous plants. Based on ARDRA of PCRamplified 16S rDNA and 16S-23S rDNA spacer fragments, the rhizobial strains isolated from Java differed with those from Sumatra. Six Java isolates and only one Sumatra isolate were classified as Bradyrhizobium japonicum and these similar to that of B. japonicum strain USDA 110. All these B. japonicum strains were highly specific for soybean. One isolate from Java showed a rather unique position. The remaining strains from Java (20), which were symbiotically promiscuous strains, were clustered in another group. This group and another group containing most Sumatra isolates were distinct from B. japonicum USDA 110 and therefore it is tempting to speculate that these represent indigenous soybean rhizobial bacteria. Application of agricultural practices, such as enhancement of rhizobial population, to increase soybean production is still essential and noteworthy in Sumatra.

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Effectiveness of foreign bradyrhizobia strains in enhancing nodulation, dry matter and seed yield of soybean ( Glycine max L.) cultivars in Nigeria

Okereke

Onochie

Onunkwo

et al. 2001

Biology and Fertility of Soils

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Population dynamics of soybean root-nodule bacteria in latosol soil used for upland and lowland rice/soybean cropping systems in West Java, Indonesia

Cited by 6 publications

References 6 publications

Effects of Bradyrhizobium japonicum and Phosphorus Supplementation on the Productivity of Legumes

Effects of Bradyrhizobium japonicum and Phosphorus Supplementation on the Productivity of Legumes

Characterisation of Soybean Rhizobial Strains From Java and Sumatra

Effectiveness of foreign bradyrhizobia strains in enhancing nodulation, dry matter and seed yield of soybean ( Glycine max L.) cultivars in Nigeria

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