Diversity of non-symbiotic nitrogen-fixing bacteria and their potential in andisols affected by the eruption of Mount Sinabung, North Sumatra, Indonesia

Sembiring, Mariani; Sabrina, T.

doi:10.13057/biodiv/d220854

Cited by 4 publications

(5 citation statements)

References 31 publications

(26 reference statements)

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“…With the mixed inoculant, the role of each bacteria can function properly so that plant growth increases compared to a single treatment. Nitrogen-fixing bacteria can produce IAA hormone so that it can increase plant growth 2,[19][20][21][22] . According to Paul et al 23 , E. cloacae can increase nitrogen-fixation so that it increases plant growth.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen Fertilization and Corn Growth (Zea mays) Effect in Andisols by Using Non-Symbiotic Nitrogen-Fixing Bacteria

Sembiring¹,

Sabrina²

2022

Asian J. of Plant Sciences

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Background and Objective: The availability of Nitrogen (N) is very limited in the soil because this nutrient is easily washed and evaporates so that it cannot be absorbed by plants. Efforts that can be made to increase the availability of N in the soil is to utilize non-symbiotic N-fixing bacteria. The purpose of this study was to obtain superior microbes that could increase the efficiency of N fertilization and the growth of corn in Andisol soil. Materials and Methods: The materials used in this study were Andisol soil, Dyella japonica, Enterobacter cloacae. The study applies a factorial randomized block design consisting of 2 factors. The factor I is nitrogen-fixing bacteria consisting of 4 treatments, no bacteria (N 0 ), D. japonica 5 g/plant (N 1 ), E. cloacae 5 g/plant ( N 2 ) and D. japonica 2.5 g+E. cloacae 2.5 g (N 3

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Section: Resultsmentioning

confidence: 99%

Nitrogen Fertilization and Corn Growth (Zea mays) Effect in Andisols by Using Non-Symbiotic Nitrogen-Fixing Bacteria

Sembiring¹,

Sabrina²

2022

Asian J. of Plant Sciences

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“…Furthermore, the fertilizer treatment which combined 3 types of fertilizers namely urea, LOF, and NFB (P6) gave the highest total N content, namely 0.95% (very high category [19]) and was significantly different from other treatments. This is presumably because the A4 treatment is a complete fertilizer combination from this study, namely urea with a high enough N content can increase total N [22], LOF based on initial analysis contains very high total N, and NFB plays a role in nitrogen fixation in the air [20].…”

Section: Cation Exchange Capacity (Cec)mentioning

confidence: 92%

“…The presence of nitrogen-fixing bacteria plays a role in fixing nitrogen in the air so that it can increase the total N in the soil. Research [20] reported that N-total increased by 111.76 % in soil applied with NFB compared to without NFB application. In addition, biochar can absorb NH 4 + and NO 3thereby reducing the leaching and evaporation of N from the soil [21].…”

Section: Cation Exchange Capacity (Cec)mentioning

confidence: 99%

Utilization of organic ameliorants and fertilizers to increase Entisol total N through axis system fertigation in vertical cultivation

Tobing,

Ndua,

Hanas

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The high porosity and low organic matter content of Entisol are the reasons that Nitrogen (N) is easily leached and lost due to evaporation. Application of organic ameliorants and fertilization is expected to increase total N in Entisol. To find out the effect of organic ameliorants and fertilizers on increasing total N through axis fertigation in vertical cultivation, this study was conducted using a divided plot design. The organic ameliorant treatment consisted of soil (A1) as control, A2 (soil:biochar)(1:1), A3 (soil:compost)(1:1), A4 (soil: biochar:compost)(1:1:1), while the fertilizer treatment consisted of P1 (urea), P2 (liquid organic fertilizer [LOF]), P3 (urea + liquid organic fertilizer[LOF]), P4 (urea + nitrogen fixing-bacteria[NFB]), P5 (liquid organic fertilizer[LOF] + nitrogen-fixing bacteria[NFB]), and P6 (Urea + liquid organic fertilizer[LOF] + nitrogen-fixing bacteria[NFB]). The results showed that the increase in total N occurred after the addition of organic ameliorant and fertilizer. The single treatment with ameliorant ratio of 1:1:1 (soil: biochar: compost) (A4) showed the highest increase in total N, which was 1.08% and was significantly different from the other treatments. The single treatment of fertilizer type with a combination of 3 types of fertilizer namely urea + LOF + NFB (P6) produced the highest total N (0.95%).

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“…Nitrogen-fixing bacteria can be found in soil and plant roots [13,14]. Nitrogen-fixing bacteria consist of non-symbiotic bacteria that fix free nitrogen in the air without associating with other organisms and symbiotic bacteria that fix nitrogen by associating with other organisms.…”

Section: Introductionmentioning

confidence: 99%

Bacterial abundance of cacao agroforestry, cacao monoculture and secondary forest land uses in north Luwu, South Sulawesi

Nurhikmayani,

Jayadi,

Juita

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Expanding the agricultural sector in North Luwu influences land use modification to enhance plantation output. Continuous land use and clearance can jeopardize the survival of native land vegetation, altering C and N cycles, community composition, population, and soil microbial activity. Microorganisms are essential for maintaining the health and quality of the soil. The abundance of soil microorganisms significantly impacts ecosystem function, so it can help boost agricultural output. This demonstrates that data on the abundance and diversity of soil microorganisms can be used to determine soil fertility. However, more information is needed about the diversity of soil microbes in North Luwu. This study seeks to determine the abundance of soil microorganisms, particularly for various land uses. Random soil samples were collected from cacao monoculture, cacao agroforestry, and secondary forest. The C: N ratio and the total number of microorganisms were then measured in the collected soil samples. Cacao agroforestry with the highest C: N ratio had 1.8 x 108 CFU/g of total soil bacterial, the highest bacterial abundance among the three land covers, followed by secondary forest and cacao monoculture with the lowest C: N ratio and lowest bacterial abundance 2 x 107 CFU/g. These results indicated that the soil C: N ratio influences the bacterial abundance of various land uses. The highest abundance of nitrate-fixing bacteria was found in secondary forests and the lowest in cacao agroforestry, even though the %N indicated by both was the same.

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Diversity of non-symbiotic nitrogen-fixing bacteria and their potential in andisols affected by the eruption of Mount Sinabung, North Sumatra, Indonesia

Cited by 4 publications

References 31 publications

Nitrogen Fertilization and Corn Growth (Zea mays) Effect in Andisols by Using Non-Symbiotic Nitrogen-Fixing Bacteria

Nitrogen Fertilization and Corn Growth (Zea mays) Effect in Andisols by Using Non-Symbiotic Nitrogen-Fixing Bacteria

Utilization of organic ameliorants and fertilizers to increase Entisol total N through axis system fertigation in vertical cultivation

Bacterial abundance of cacao agroforestry, cacao monoculture and secondary forest land uses in north Luwu, South Sulawesi

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