Evaluating the Effect of Bacterial Inoculation and Fertilization on the Soil Nutrient Status of Coal Mine Soil by Growing Soybean (Glycine max) and Shrub Lespedeza (Lespedeza bicolor)

Revegetation with fast-growing N-fixing leguminous plants can be an alternate for reclamation of degraded coal mining areas. Selection of appropriate plant species is an important factor in deciding the success in the remediation of mine spoil. Thus, this study was carried out in greenhouse conditions to evaluate the effect of two N-fixing leguminous plant seedlings, soybean (Glycine max) and shrub lespedeza (Lespedeza bicolor), on the available N and other soil nutrients (P, K, Ca, and Mg) of the experimental coal mine soil. Four treatments, including T0—non-fertilized non-inoculation (control), T1—fertilization, T2—bacterial inoculation, and T3—combination of fertilization and bacterial inoculation with three replications were applied to both plants. Concentration of NH4+-N and NO3−-N increased significantly in the soil at different treatments for both soybean and shrub lespedeza, as compared to control, but apart from control no significant difference was observed between other treatments of increased NH4+-N for soybean and increased NO3−-N for shrub lespedeza. The highest number of nodules and dry weight of nodule per plant (g) was recorded 5.73 and 1.8, respectively in soybean, and 7.77 and 2.76, respectively, in shrub lespedeza with bacteria-inoculated treatment (T2), whereas fertilized treatment (T1) produced the lowest number of nodule and dry weight of nodule in both plants. Increasing of available P and K was significantly high when NPK fertilizer was applied to the plants but decreased at other treatments. Therefore, it can be concluded that soybean and shrub lespedeza have a significant role in changing soil nutrient status in coal mining soil through fertilizer application and biological N fixation.

Download Full-text

Enhancing maize (Zea mays l.) growth and nutrient uptake via application of water hyacinth (Eichornia crassipes [Mart.] Solms) compost and inorganic nutrients

10.36265/njss.2019.290105 ◽

2019 ◽

pp. 27-34

Author(s):

Atere C.T ◽

olayinka A.

Keyword(s):

Nutrient Uptake ◽

Water Hyacinth ◽

Soil Nutrient ◽

Dry Weight ◽

Nutrient Status ◽

Residual Effects ◽

Soil Culture ◽

Soil Nutrient Status ◽

Nutrient Contents ◽

Eichornia Crassipes

A soil culture experiment was conducted in the screenhouse to assess the growth response of maize to water hyacinth compost application rates and their residual effects. Water hyacinth (Eichhornia crassipes [Mart.] Solms) compost, namely, 2.5 t ha-1(W1) and 5.0 t ha-1 (W2) with and without fortification with fertilizer, F [N (25 kg ha-1 as urea) and P (26 kg ha-1 as SSP)] were mixed with portions of 5 kg soil and used to grow maize. At eight weeks after planting in each of two con- secutive cropping, plant heights, biomass dry weight and their nutrient contents were determined. Soil was also sampled from each pot for chemical analyses. Compared with the control, available P and exchangeable K were increased (p<0.05) by W2F (27%) and W2 (43%), respectively. Similarly, W2F and W2 increased SOM by 86 and 107% (p<0.05), respectively, while W2F, W2 and W1F increased exchangeable Ca between 8 and 10% (p<0.05). Treatments W2F, W2 and W1F increased plant heights by 35–40% while W2 and W2F increased the dry matter yield by 72 and 75% (p<0.05), respectively. Further, sole compost or its organo-mineral form increased the tissue contents of N (98–141%), and K and Mg (103–280%). The tissue content of Ca was also increased (p<0.05) by W2F. Residual effects of the soil amendments were also significant on most tested soil and plant parameters. It was concluded that soil nutrient status, maize agronomic and nutrient uptake parameters were improved by the application of water hyacinth compost with and without inorganic N and P. The rate of 5.0 t ha-1 of the sole compost and its organo-mineral form proved superior in enhancing maize growth and soil nutrient status.

Download Full-text

Effect of Fertilization and Bacterial Inoculation on Nutrient Status in Coal Mine Soil under Alder (Alnus sibirica) Plantation

International Journal of Plant & Soil Science ◽

10.9734/ijpss/2019/v31i430214 ◽

2020 ◽

pp. 1-8

Author(s):

Md. Omar Sharif ◽

Chang-Seob Shin

Keyword(s):

Plant Species ◽

Coal Mine ◽

Nutrient Status ◽

N Fixation ◽

Mine Soil ◽

Bacterial Inoculation ◽

Available Nitrogen ◽

Available N ◽

Biological N Fixation ◽

Randomized Design

This study was conducted to assess the effect of fertilization and nitrogen fixing (N-fixing) bacterial inoculation on the available nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg), present in the coal mine soil, by growing N-fixing plant species, alder (Alnus sibirica). The study was conducted in a greenhouse of the Forest Science Department, Chungbuk National University, South Korea, during the period of May 2019 to July 2019. A completely randomized design (CRD) comprising of four treatments, including T0—non-fertilized non-inoculation (control), T1—fertilization, T2—bacterial inoculation and T3—fertilization along with bacterial inoculation with three replications were used in the study. The results of the study showed that available N (NH4+-N and NO3−-N) in the coal soil were increased by the applied treatments for alder, as compared to control. Apart from control, difference was also found for increasing ammonium (NH4+-N) between treatments T1 and T3 and for increasing nitrate (NO3−-N) between treatments T1 and T2 and treatments T2 and T3. Available P and K in the soil also increased when NPK fertilizer was applied solely, and together with inoculation to the plants but reduced at other treatments. Therefore, it can be concluded that fertilization and biological N fixation in alder plant can improve the fertility of coal mine soil, and hence, this plant species could be a good option for the reclamation of degraded coal mine soil.

Download Full-text

Effect of Fertilization and Bacterial Inoculation on the Growth of Alder (Alnus sibirica) in Coal Mine Soil

Asian Research Journal of Agriculture ◽

10.9734/arja/2020/v12i230081 ◽

2020 ◽

pp. 39-45

Author(s):

Md. Omar Sharif ◽

Chang-Seob Shin

Keyword(s):

Leaf Area ◽

Coal Mine ◽

Vegetative Growth ◽

Dry Weight ◽

Maximum Growth ◽

Mine Soil ◽

Bacterial Inoculation ◽

Area Index ◽

Root Dry Weight ◽

Inoculation Treatment

This study was conducted to evaluate the effect of fertilization and nitrogen fixing (N-fixing) bacterial inoculation on the vegetative growth of alder (Alnus sibirica) plant species while grown in coal mine soil. The study was conducted in a greenhouse of the Forest Science Department, Chungbuk National University, South Korea, during the period of May 2019 to July 2019. A completely randomized design (CRD) comprising of four treatments, including T0—non-fertilized non-inoculation (control), T1—fertilization, T2—bacterial inoculation and T3—fertilization along with bacterial inoculation with three replications were used in the study. The results of the study showed that maximum growth of all studied parameters of alder were observed in fertilization along with bacterial inoculation treatment (T3) and this treatment had significant effect on the growth of these parameters as compared to control, except root dry weight and shoot/root ratio. Fertilization treatment (T1) showed significant increase of stem height, shoot fresh and dry weight, plant dry weight, canopy spread, number of leaves, branches and nodes per plant, leaf area and leaf area index of alder in coal mine soil, as compared to control. Bacterial inoculation treatment (T2) also had positive effect on the vegetative parameters of plants comparing to control, excluding root length, root dry weight, shoot/root ratio, and canopy spread. Therefore, it can be summarized that fertilizer application and bacterial inoculation to the soil have a significant role in improving the vegetative growth of alder in coal mine soil.

Download Full-text