Symbiotic nitrogen fixation and nitrogen budget of Brazilian soybean [Glycine max (L.) Merril] varieties introduced in Benin using 15N isotopic dilution method

Zoundji, C. C.; Houngnandan, Pascal; Kouelo, F. A.; Boko, Frechno; Adu-Gyamfi, Joseph

doi:10.5897/ajar2015.9787

Cited by 3 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zoundji et al. (2016) also reported a positive residual N balance when soybean grains were exported, and stover was retained on the field after harvest in Benin. Therefore, the current practice in Northern Ghana, where farmers harvest the whole soybean plant (dry pod + haulm) and carry the material away from the field for threshing, would exacerbate the loss of soil nutrients, especially N.…”

Section: Discussionmentioning

confidence: 95%

“…(2007) and Zoundji et al. (2016). For budget 1: Residual N balance was estimated as total N fixed − grain N uptake − haulm N uptake.…”

Section: Methodsmentioning

confidence: 96%

“…Residual N balance was estimated using two approaches as reported by Adu-Gyamfi et al (2007) and Zoundji et al (2016). For budget 1: Residual N balance was estimated as total N fixed − grain N uptake − haulm N uptake.…”

Section: Residual Nitrogen Balancementioning

confidence: 99%

See 2 more Smart Citations

Bradyrhizobium inoculants impact on promiscuous nodulating soybeans cultivars in Ghana's farming systems

Akley

Rice

Ahiabor³

et al. 2023

Agronomy Journal

View full text Add to dashboard Cite

Soybean is rarely inoculated with commercial Bradyrhizobium inoculants in Ghana's cropping systems. A 2-year field study was conducted at Council for Scientific and Industrial Research-Savanna Agricultural Research Institute's experimental field at Nyankpala, Ghana to assess how commercial inoculants affect growth, nodulation, nitrogen fixation, and grain yield of promiscuous nodulating soybean cultivars. The experiment was a split-plot design with the main plot factor as soybean [tropical Glycine max (L.) Merr. crosses (TGX) cultivars]; Jenguma (TGX1448-2E), Afayak (TGX1834-5E), and Songda (TGX 1445-3E). The subplot factor consisted of three commercial Bradyrhizobium japonicum inoculants, namely, Biofix (strain USDA 110), NoduMax (strain USDA 110), and Legumefix (strain 532c) plus uninoculated control. Shoot biomass and nodulation were assessed at vegetative (V8, 8-leaf stage), full bloom (R2), beginning to pod (R3), full pod (R4), and full seed (R6) stages, respectively, and N fixation and grain yield at maturity. Shoot dry matter increased with growth stage and peaked at the R6 stage with significant effect associated with Biofix and NoduMax. Nodulation on the upper root and the whole root also peaked at the R4 stage, with pronounced effects associated with Biofix and Nodu-Max. Enhanced grain yields of up to 30% were achieved with Biofix and NoduMax compared to the uninoculated control in both 2016 and 2017. Regarding the cultivars, shoot biomass increased with growth stage and peaked at R6 stage and Afayak yielded greater shoot biomass. On average (2 years), Afayak produced greater grain yields than Jenguma and Songda. In conclusion, Biofix and NoduMax were the most promising commercial inoculants for soybean production in Northern Ghana.

show abstract

Section: Discussionmentioning

confidence: 95%

“…(2007) and Zoundji et al. (2016). For budget 1: Residual N balance was estimated as total N fixed − grain N uptake − haulm N uptake.…”

Section: Methodsmentioning

confidence: 96%

See 1 more Smart Citation

Bradyrhizobium inoculants impact on promiscuous nodulating soybeans cultivars in Ghana's farming systems

Akley

Rice

Ahiabor³

et al. 2023

Agronomy Journal

View full text Add to dashboard Cite

show abstract

Biological N fixation activity in soybean can be estimated based on nodule dry weight and is increased by additional inoculation

et al. 2022

View full text Add to dashboard Cite

Evaluation of the effect of symbiotic nitrogen fixation on the yield of soybean and nitrogen state of soil

Revt'ie-Uvarova¹

2019

AiG

View full text Add to dashboard Cite

Under the conditions of the low-field experiment on chernozems typical low humus, it was estimated the agronomic efficiency of symbiotic nitrogen fixation for growing soybean by comparing indicators of soil condition and morphometric characteristics of soybean plants, the seeds of which were treated with a preparation based on nodule bacteria Bradyrhizobium japonicum with untreated seeds (non-inculcated). It was established that symbiotic nitrogen fixation contributes to the formation of a more powerful root system with active nodules, an increase in the growth in intensity of growth of the vegetative mass by 42 %, and an improvement in the supply of nitrogen to soybean plants, as assessed by chlorophyll content in leaves. The yield of soybean grain increases by 29 %, which, like vegetative mass and roots, contains more nitrogen and is characterized by a tendency to a decrease in the content of phosphorus and potassium. It was determined that against the background of a decrease in the ratio of secondary products to soybean grain (1.5: 1), nitrogen removal with vegetative mass (2.2 times) and grain (by 32 %) are increased. It was established that part of the biologically fixed nitrogen in the formation of the biological yield of soybean obtained on chernozem typical under the weather conditions of 2018 is 43 %, and the available soil nitrogen is 57 %. To diagnose the availability of soil with nitrogen in the aftereffect of symbiotic nitrogen fixation, it is proposed to determine the «net» nitrogen-fixation by the actual reserves of mineral nitrogen under inoculated soybean (minus its reserves under non-inoculated) and by the potential amount of nitrogen that additionally comes with the total vegetative mass (by the difference between the nitrogen content of vegetative mass inoculated and non-inoculated soybean). In the weather conditions of 2018 in the typical chernozem «net» nitrogen fixation under soybean was 69 kg N/ha, of which 40 kg/ha are the reserves of mineral nitrogen in the soil and 29 kg/ha are nitrogen coming from the vegetative mass.

show abstract

Symbiotic nitrogen fixation and nitrogen budget of Brazilian soybean [Glycine max (L.) Merril] varieties introduced in Benin using 15N isotopic dilution method

Cited by 3 publications

References 43 publications

Bradyrhizobium inoculants impact on promiscuous nodulating soybeans cultivars in Ghana's farming systems

Bradyrhizobium inoculants impact on promiscuous nodulating soybeans cultivars in Ghana's farming systems

Biological N fixation activity in soybean can be estimated based on nodule dry weight and is increased by additional inoculation

Evaluation of the effect of symbiotic nitrogen fixation on the yield of soybean and nitrogen state of soil

Contact Info

Product

Resources

About