Effect of Humic Acid on Soil Microbial Population and Enzymatic Activity

P, Chaitra

doi:10.20546/ijcmas.2018.711.198

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Due to the absence of straw returning, the harvested crops consume a considerable amount of soil carbon, thereby SOM content decreased with time. Although humic substances were applied in each growing season, humic substances may increase enzyme activities and stimulate soil microbial activity, thereby improving the decomposition of SOC and reducing SOM content (Chaitra & Math, 2018; Priya et al, 2014). Due to the relatively low emergence rate of crops in the first season (September 18, 2019), a large amount of nitrogen is retained in soil, resulting in an increase in soil TN content compared with the initial stage of the experiment (April 29, 2019).…”

Section: Discussionmentioning

confidence: 99%

Effects of the combined application of biochar and humic substances on the improvement of saline cropland in the Yellow River Delta of China

et al. 2023

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Soil salinization has become a global environmental problem with the potential to cause serious land degradation. Thus, improving salt‐affected soils and enhancing the nutrient utilization efficiency of saline farmlands through scientific and effective measures are urgent scientific problems. In this study, a 2‐year field experiment was conducted to evaluate the effects of different soil amendments and their combinations on the dynamics of soil salinity, soil nutrients, and crop yield in a moderately salinized soil (EC1:5 of 0.78 dS m−1 and total salt content of 3.06 g kg−1). Nine soil treatments were implemented: biochar (B), lignocellulose (L), humic acid (H), fulvic acid (F), biochar + humic acid (B + H), biochar + fulvic acid (B + F), lignocellulose + humic acid (L + H), lignocellulose + fulvic acid (L + F), and control (CK). The results demonstrated that the application of F led to a certain reduction on the contents of soil salt, Na+, and Cl− among the soils amended with a single amendment application. The combined application of B and F or H could increase the soil desalination rate and increase the mineral N and Olsen‐P concentrations at a soil depth of 0–20 cm, which improved the grain yield, biological yield, N recovery efficiency (REN), N agronomic efficiency (AEN), N partial factor productivity (PFPN), P agronomic efficiency (AEP), and P partial factor productivity (PFPP). Although the single application of L led to decreases in the grain yield, biological yield, REN, AEN, PFPN, REP, AEP, PFPP, and P physiological efficiency (PEP), the combined application of L and F had superior effects on enhancing the winter wheat grain yield and accumulative nutrient use efficiency. In conclusion, the combined application of B and F or H is recommended to ameliorate salt‐affected soils and improve nutrient availability.

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Section: Discussionmentioning

confidence: 99%

Effects of the combined application of biochar and humic substances on the improvement of saline cropland in the Yellow River Delta of China

et al. 2023

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“…Among the various applications of humic acid, its soil application resulted in the highest recorded nitrogen, phosphorus, and potassium content, outcome could be attributed to increased nutrient mineralization, enhanced nutrient availability, and elevated microbial activity in the soil [6,7]. Similarly, the use of Phosphorous Solubilizing Bacteria (PSB) contributed to comparable outcomes in parameters such as available nitrogen, phosphorus, and potassium.…”

Section: Available Nitrogen Phosphorus and Potassium Of Soil After Ha...mentioning

confidence: 99%

Residual Effect of Humic Acid, PSB and Phosphorus Nutrition on Soil Chemical Properties after Harvest of Rice Crop under the Subtropical Condition of Jammu

Bansal,

Sharma,

Sharma

et al. 2024

IJPSS

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Field experiments were conducted during Kharif season of 2022 at the Research Farm, WMRC, SKUAST- J, Chatha. The soil of the experimental site was sand clay loam in texture, slightly alkaline in reaction, low in organic carbon and available nitrogen but medium in phosphorus and potassium. The experiment was laid out in Factorial RBD with three factors replicated thrice. Twenty treatment combinations comprising of five Humic acid treatments (Control, Soil Application of Humic acid @ 2.5kg/ha & 5kg/ha (Market ready), and Soil Application of Humic acid @ 2.5kg/ha & 5kg/ha (FYM), two PSB treatments (With and without PSB) and two levels of Phosphorus nutrition (100% Recommended N:100% Recommended P - 15:40 kg/ha and 100% Recommended N:75% Recommended P - 15:30 kg/ha). The utilization of Humic acid at a rate of 5 kg/ha, sourced from both Market Ready and Farm Yard Manure (FYM), combined with seed treatment employing (PSB) and a nutrient application of 100% recommended nitrogen (N): 100% recommended phosphorus (P) - 15:40 kg/ha, exhibited a more pronounced and favorable residual impact on soil properties. This was evidenced by notable improvements in organic carbon, available nitrogen, phosphorus, and potassium levels, surpassing their initial values but shows in non-significant results. Furthermore, this treatment employing humic acid application, PSB & Phosphorous nutrition showed improvement in seed yield and straw yield but failed to show significant results in residual rice crop.

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Effect of Humic Acid on Soil Microbial Population and Enzymatic Activity

Cited by 2 publications

References 3 publications

Effects of the combined application of biochar and humic substances on the improvement of saline cropland in the Yellow River Delta of China

Effects of the combined application of biochar and humic substances on the improvement of saline cropland in the Yellow River Delta of China

Residual Effect of Humic Acid, PSB and Phosphorus Nutrition on Soil Chemical Properties after Harvest of Rice Crop under the Subtropical Condition of Jammu

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