Effect of biochar amendment on soil enzymatic activities, carboxylate secretions and upland rice performance in a sandy clay loam Alfisol of Southwest Nigeria

Oladele, Segun

doi:10.1016/j.sciaf.2019.e00107

Cited by 37 publications

(33 citation statements)

References 51 publications

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“…However, the urease activities in FPK 3M and FRH 3M were not statistically different from PK 3M and RH 3M (p > 0.05). Similarly, stimulation of urease activity following the coapplication of biochar with urea fertilizer was reported by Oladele (2019b) in a humid tropical alfisol by using a rice husk biochar. The stimulation of urease in plots incorporated with NPK fertilizer is attributed mainly to the urea input, which serves as the substrate for microbial urease hydrolytic activity.…”

Section: Effect On Soil Microbial Biomass and Urease Activitysupporting

confidence: 60%

“…Supplementation of biochar with fertilizer may further enhance the amelioration effect, as biochar can hold the applied N and prevent it from leaching (Oladele et al 2019a; Uttran et al 2018), and hence, mitigate N loss against weathering. A growing body of evidence reveals that biochar induces soil microbiota responses (Lehmann et al 2011), including in the humid tropics (Halmi and Simarani 2021;Oladele 2019b;Petter et al 2019). Stimulation of biological N 2 fixation by diazotrophs upon biochar treatment is another beneficial biochar effect (Liu et al 2018;Xiao et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Diazotrophic population and soil nitrogen dynamics following coapplication of biochar with inorganic fertilizer in the humid tropics

Halmi

Simarani²

2021

Bragantia

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Nutrient loss from the weathering process is a major challenge for tropical agriculture. Biochar with nutrient retention capacity has been proposed as an amendment to retain plant-available nutrients. Meanwhile, information on diazotrophic population responses to biochar application in the humid tropics is still poorly explored. A field study was carried out over three cropping cycles of maize in a typic paleudults of Peninsular Malaysia. During the first cropping cycle, the soil was amended with palm kernel shell biochar (PK), rice husk biochar (RH), palm kernel biochar with fertilizer (FPK), rice husk biochar with fertilizer (FRH), fertilizer (F), and control soil (C). Soil samples were taken at each harvesting stage and analyzed for pH, cation exchange capacity (CEC), total N, ammonium (NH 4 + -N), nitrate (NO 3 --N), microbial biomass N, and urease activity. Total and active diazotrophs were quantified from soil DNA and RNA, respectively, employing quantitative polymerase chain reaction (qPCR) amplification of the nifH gene. Palm kernel shell and rice husk biochars maintained a significant NH 4 + -N and NO 3 --N, respectively, during the second cropping cycle. Both biochars promote the total and active diazotrophic population. A detrimental impact on the nifH transcript was detected from fertilization even when biochar was co-amended. Two possible land management options for tropical soil were proposed from the overall data. First, the application of fertilizer with biochar can reduce N loss against weathering. Second, the application of biochar alone may improve biological N 2 fixation in tropical soils.

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Section: Effect On Soil Microbial Biomass and Urease Activitysupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Diazotrophic population and soil nitrogen dynamics following coapplication of biochar with inorganic fertilizer in the humid tropics

Halmi

Simarani²

2021

Bragantia

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“…Several studies have reported an increase in the enzymes protease, chymotrypsin, trypsin, phosphohydrolase, lipase-esterase, and esterase with the application of biochar [ 17 , 19 , 75 ]. Oladele [ 76 ] reported significantly increased urease activity, invertase activity, and phosphatase activity with the application of biochar; the highest rate (12 t ha −1 ) was at soil depths of 0 to 0.1 m. The microbial biomass and the AMF spores in soil also increased compared to the control. A similar increase in AMF spores due to biochar application was reported by Hashem et al [ 48 ].…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have reported an increase in the enzymes protease, chymotrypsin, trypsin, phosphohydrolase, lipase-esterase, and esterase with the application of biochar [17,19,75]. Oladele [76] reported significantly increased Figure 10. Summary for the action mechanism for the combined effect of biochar and AMF for the improvement of plant growth and soil enzymatic activity.…”

Section: Effect Of Biochar and Amf On Amf Spore Number Microbial Biomass And Soil Enzymatic Activitymentioning

confidence: 96%

Beneficial Features of Biochar and Arbuscular Mycorrhiza for Improving Spinach Plant Growth, Root Morphological Traits, Physiological Properties, and Soil Enzymatic Activities

Jabborova

Annapurna

Paul

et al. 2021

JoF

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Biochar and arbuscular mycorrhizal fungi (AMF) can promote plant growth, improve soil properties, and maintain microbial activity. The effects of biochar and AMF on plant growth, root morphological traits, physiological properties, and soil enzymatic activities were studied in spinach (Spinacia oleracea L.). A pot experiment was conducted to evaluate the effect of biochar and AMF on the growth of spinach. Four treatments, a T1 control (soil without biochar), T2 biochar alone, T3 AMF alone, and T4 biochar and AMF together, were arranged in a randomized complete block design with five replications. The biochar alone had a positive effect on the growth of spinach, root morphological traits, physiological properties, and soil enzymatic activities. It significantly increased the plant growth parameters, such as the shoot length, leaf number, leaf length, leaf width, shoot fresh weight, and shoot dry weight. The root morphological traits, plant physiological attributes, and soil enzymatic activities were significantly enhanced with the biochar alone compared with the control. However, the combination of biochar and AMF had a greater impact on the increase in plant growth, root morphological traits, physiological properties, and soil enzymatic activities compared with the other treatments. The results suggested that the combined biochar and AMF led to the highest levels of spinach plant growth, microbial biomass, and soil enzymatic activity.

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“…These increases might be due to the combined application of biochar and N, which enhanced the N uptake by plants in all growing seasons and improved the soil physicochemical properties and nutrient availability in the soil . Similarly, enriched soil enzymatic activities (Oladele, 2019) increased the leaf N metabolism activity (Farhangi-Abriz & Torabian, 2018) and soil microbial biomass, which improved the chlorophyll fluorescence traits. The combined application of biochar and N to soil also improves plant photosynthetic traits (Ali et al, 2020), which may result in increased fluorescence.…”

Section: Chlorophyll Fluorescencementioning

confidence: 96%

Combined application of biochar and nitrogen fertilizer improves rice yield, microbial activity and N-metabolism in a pot experiment

Ali

Ullah

et al. 2020

PeerJ

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The excessive use of synthetic nitrogen (N) fertilizers in rice (Oryza sativa L.) has resulted in high N loss, soil degradation, and environmental pollution in a changing climate. Soil biochar amendment is proposed as a climate change mitigation tool that supports carbon sequestration and reduces N losses and greenhouse gas (GHG) emissions from the soil. The current study evaluated the impact of four different rates of biochar (B) (C/B0-0 t ha−1, B1-20 t ha−1, B2-40 t ha−1, and B3-60 t ha−1) and two N levels (N1; low (270 kg N ha−1) and N2; high (360 kg N ha−1)), on rice (cultivar Zhenguiai) grown in pots. Significant increases in the average soil microbial biomass N (SMBN) (88%) and carbon (87%) were recorded at the highest rate of 60-ton ha−1B and 360 kg N ha−1 compared to the control (N1C) during both seasons (S1 and S2). The photochemical efficiency (Fv/Fm), quantum yield of the photosystem (PS) II (ΦPS II), electron transport rate (ETR), and photochemical quenching (qP) were enhanced at low rates of biochar applications (20 to 40 t B ha−1) for high and low N rates across the seasons. Nitrate reductase (NR), glutamine synthetase (GS), and glutamine 2-oxoglutarate aminotransferase (GOGAT) activity were, on average, 39%, 55%, and 63% higher in the N1B3, N2B2, and N2B3 treatments, respectively than the N1C. The grain quality was higher in the N1B3 treatment than the N1C, i.e., the protein content (PC), amylose content (AC), percent brown rice (BRP), and percent milled rice (MRP) were, on average, 16%, 28%, 4.6%, and 5% higher, respectively in both seasons. The results of this study indicated that biochar addition to the soil in combination with N fertilizers increased the dry matter (DM) content, N uptake, and grain yield of rice by 24%, 27%, and 64%, respectively, compared to the N1C.

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Effect of biochar amendment on soil enzymatic activities, carboxylate secretions and upland rice performance in a sandy clay loam Alfisol of Southwest Nigeria

Cited by 37 publications

References 51 publications

Diazotrophic population and soil nitrogen dynamics following coapplication of biochar with inorganic fertilizer in the humid tropics

Diazotrophic population and soil nitrogen dynamics following coapplication of biochar with inorganic fertilizer in the humid tropics

Beneficial Features of Biochar and Arbuscular Mycorrhiza for Improving Spinach Plant Growth, Root Morphological Traits, Physiological Properties, and Soil Enzymatic Activities

Combined application of biochar and nitrogen fertilizer improves rice yield, microbial activity and N-metabolism in a pot experiment

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