Microbial Activity Is Constrained by the Quality of Carbon and Nitrogen under Long-term Saline Water Irrigation

Chahal, S. S.; Choudhary, O. P.; Mavi, Manpreet Singh

doi:10.1080/00103624.2018.1455852

Cited by 12 publications

(7 citation statements)

References 48 publications

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“…Besides, significantly higher DOC concentration over time in biochar amended saline soils suggest utilization of easily decomposable substrate by the stressed microbes thereby, increasing concentration of more stable compounds . Consistent with findings of the present study, increased availability of substrate has been shown to help the microbes to counteract some of the negative effects of salt . Furthermore, it has been shown that lower temperature (<400 °C) biochar was more efficient in releasing labile substrates for enhanced soil microbial activity .…”

Section: Discussionsupporting

confidence: 90%

“…Significant negative relationship between microbial activity and EC has been demonstrated in earlier studies which was also confirmed by lower cumulative respiration and biomass at higher salt concentrations in the current study possibly due to osmotic stress and dehydration of microbial cells . On the other hand, the adverse effects of salinity have been shown to get reduced by application of organic matter to degraded soils through improved soil structural stability and decreased bulk density, exchangeable sodium percentage and EC . Liang et al also demonstrated that incorporation of organic manure is an effective low‐input approach for enhancing soil fertility and minimizing phytotoxicity under saline conditions.…”

Section: Discussionsupporting

confidence: 84%

“…Because of poor nutrient uptake and plant growth and therefore, reduced residue input, salt‐affected soils generally have low organic matter content . Earlier findings indicate that addition of organic amendments can improve soil properties like water infiltration, water‐holding capacity (WHC), aggregate stability, soil microbial biomass, and enzymatic activities under high salt conditions . However, mechanisms of reclamation of salt‐affected soils by organic amendments may differ depending on their chemical composition and thus may have a different scale of effect on the properties of these degraded soils …”

Section: Introductionmentioning

confidence: 99%

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Saline Soils Can Be Ameliorated by Adding Biochar Generated From Rice‐Residue Waste

Singh

Mavi

Choudhary

2019

CLEAN Soil Air Water

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Information on the effects of biochar on salinity is inadequate, although increasing data have shown that the addition of biochar can improve soil fertility and crop production. Soil samples varying in electrical conductivity (EC) levels (2 (EC2; non‐saline control), 8 (EC8), and 16 (EC16) dS m−1) collected from a long‐term field experiment on irrigation water induced salinity were incubated for 8 weeks with different rates of rice‐residue biochar (B0: unamended, B1: 1%, B2: 2%, B4: 4% w/w). Irrespective of salinity, both EC and pH increased with increasing rate of biochar application. Compared with unamended control soil (EC2), cumulative respiration (CR) and microbial biomass carbon (MBC) in EC8 or EC16 soil was lower by 39–63 and 51–71%, respectively. However, addition of biochar at the rate of 2–4% reduced the decrease in CR and MBC either to 21% or similar to unamended non‐saline treatment in EC8 soil, respectively. However, the percentage decrease in CR and MBC was reduced to 47 or 21% in EC16 soil, respectively. Contrarily, biochar addition at the rate of 1% in EC8 or EC16 soil did not show a significant increase in CR and MBC compared with non‐saline control. Furthermore, at all salinity levels, NO3−‐N concentrations increase with increasing incubation time and biochar rates, whereas NH4+‐N concentrations were greater on day 14 than day 56 of incubation. It may be concluded that application of higher rates of rice‐residue biochar (2–4%) will be more effective in reducing the adverse effects of salinity on soil properties.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

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Saline Soils Can Be Ameliorated by Adding Biochar Generated From Rice‐Residue Waste

Singh

Mavi

Choudhary

2019

CLEAN Soil Air Water

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“…This land is used to grow a variety of economically valuable commodities, especially horticultural crops. (S. S Chahal et al, 2018). The amelioration process used is the addition of clay, humic acid, organic fertilizer (compost) and rice straw.…”

Section: Resultsmentioning

confidence: 99%

The Potential of Amelasir to Restoring Sandy Land Into Productive Paddy Fields at Pt Pim Fostered Village

Yusra,

Emmia Tambarta Kembaren,

Usnawiyah

et al. 2023

IJEBAS

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North Aceh district has 12,750 ha of idle land that has the potential to be planted with rice. This unused land becomes rice paddies because it has a large enough area and contains elements needed by rice plants. PT Pupuk Iskandar Muda implemented a program to turn sandy land into fertile rice fields called AMELASIR (Amelioration of Sandy Land) with an area of 278 m2. This program is carried out by offering intensive tillage and using ameliorants. The materials added were PIM organic fertilizer, clay, manure, rice straw compost, PIM Polivit and PIM Urea. The results of this program show an increase in rice yield from year to year. In the first growing season the harvest reached 3 tons/ha, in the second growing season it reached 3.45 tons/ha, and in the third growing season the harvest reached 4.5 tons/ha. This area has a faunal biodiversity index H' 3.22 and floral biodiversity H' 2.28. The conversion of idle land into paddy fields also increased the biodiversity of several interesting fauna species, namely 12 bird species, one reptile species, two mammal species, and 20 insect species. The AMELASIR program also made the soil more fertile for some trees so that four tree species, two pole species, eight sapling species and 16 seedling species grew in the area.

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“…So, it is insistent to develop management practices for using poor-quality water for agriculture without or with minimum reduction in crop yields (Singh et al, 2021). Organic materials addition into the soil is a good management to mitigate the negative effect of saline water on soil properties (Chahal et al, 2018). The thermochemical conversion of organic material to biochar for its soil application is an effective strategy for improving the quality of degraded lands (Rizwan et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Growth Improvement of Sweet Basil (Ocimum basilicum L.) Irrigated with Saline Water Using Biochar and Spirulina Algae Extract

Fekri,

Gomah,

Eissa

2024

AJAS

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The current study aims to use the foliar treatment with Spirulina algae extract (SP) at rate 2.5g/L and biochar (BC) at rate 2% as soil amendment to alleviate the negative effects of salinity on basil plants. The irrigation with 5 dS/m saline water reduced the plant height, leaf number, branch number, leaf area, total chlorophyll, fresh, and dry weight by 10, 31,31,40, 55, 46, and 33%, respectively, compared to the fresh water. The combined addition of BC and SP (SP+BC) to the saline irrigated plants significantly increased the last above-mentioned growth parameter by 6, 21, 50, 45, 170, 8, and 31% respectively compared to the saline water without addition. The increase in branch number is not significant. BC and SP significantly (p < 0.05) increased the soil organic matter (SOM). The content of SOM can be arranged in the descending order: BC > SP > C. The irrigation of basil plant with saline water significantly decreased the total N, P and K in basil shoots at rate 31, 61, and 24%, respectively, compared to the fresh water. The addition of BC+SP to the saline irrigated basil caused increases in N, P, and K content by 90, 116, and 60% compared to the saline water without addition. Overall, the results of this study explained that using Spirulina algae extract and biochar is a good solution for improving the growth of basil plant under salinity condition.

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Microbial Activity Is Constrained by the Quality of Carbon and Nitrogen under Long-term Saline Water Irrigation

Cited by 12 publications

References 48 publications

Saline Soils Can Be Ameliorated by Adding Biochar Generated From Rice‐Residue Waste

Saline Soils Can Be Ameliorated by Adding Biochar Generated From Rice‐Residue Waste

The Potential of Amelasir to Restoring Sandy Land Into Productive Paddy Fields at Pt Pim Fostered Village

Growth Improvement of Sweet Basil (Ocimum basilicum L.) Irrigated with Saline Water Using Biochar and Spirulina Algae Extract

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