Humic acid improved efficiency of fertigation and productivity of tomato

Suman, Shashi; Spehia, R. S.; Sharma, V. P.

doi:10.1080/01904167.2016.1245325

Cited by 26 publications

(15 citation statements)

References 15 publications

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“…Humic acid can increase the chlorophyll content in peanut leaves, thus promoting the photosynthesis of peanut and providing the basis for an increase of peanut yield. The same results have been observed by adding humic acid to tomatoes (Suman et al, 2017). Our 3year study showed that the chlorophyll content was increased the most in 2018, indicating that it was a long-term accumulation process.…”

Section: Discussionsupporting

confidence: 86%

“…Different lowercase letters above the bar indicate significant difference among the treatments (P < .05). Error bars are the standard error of the mean (n = 3) results have been observed by adding humic acid to tomato (Suman et al, 2017). Our 3-yr study showed that the chlorophyll content was increased the most in 2018, indicating that it was a long-term accumulation process.…”

Section: Discussionmentioning

confidence: 58%

“…Previous studies have shown that humic acid can promote the growth and development of wheat (Ahmad, Khan, & Khattak, 2018;Khan, Khan, Khan, Saba, & Hussain, 2017;Sara, Carlos, Henrique, & Moreira, 2018), sweet potato [Ipomoea batatas (L.) Lam.] (Chen et al, 2017), tomato (Lycopersicon esculentum L.) (Suman, Spehia, & Sharma, 2017) and other crops, improve the fertilizer utilization rate and thus increase the yield of crops. Research has found that humic acid foliar spraying can improve the pod yield and biological yield of peanut (Maral, 2012).…”

Section: Discussionmentioning

confidence: 99%

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Physiological effects of humic acid in peanut growing in continuous cropping soil

Fěng

Wei

et al. 2020

Agronomy Journal

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Although humic acid has been demonstrated to improve the yield of some crops, the long-term effects of continuous cropping on peanut remain largely undetermined. In the present study, we aimed to compare the continuous effects of different concentrations of humic acid on the continuously cropped peanut. A 3-year experiment was conducted in the North China Plain. Treatments of 50 kg•ha-1 (T1), 100 kg•ha-1 (T2), and 150 kg•ha-1 (T3) humic acid were applied with inorganic fertilizer along with the equal nitrogen, phosphorus and potassium inputs. Compared with the control group, humic acid increased the yield and oxidative stress tolerance of continuously cropped peanut. To elucidate the mechanism, various physiological indicators were evaluated and compared in this study. First, humic acid This article is protected by copyright. All rights reserved. increased chlorophyll content and the ability to incorporate nutrients, and the maximum effect was achieved by T3 in 2016. Second, the activities of nitrate reductase and sucrose phosphate synthase in peanut leaves were significantly increased after humic acid treatment, and the most increase was achieved by T2. Third, the activities of antioxidant enzymes were increased, the malondialdehyde content was reduced in 2016-2018 by T3, and the same effects were observed in roots and leaves. Fourth, the content of the hormone was changed after humic acid treatment. Collectively, humic acid improved the yield and tolerance of continuously cropped peanut due to the above-mentioned four reasons, which were conducive to alleviating the obstacles of continuously cropped peanut.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 58%

Section: Discussionmentioning

confidence: 99%

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Physiological effects of humic acid in peanut growing in continuous cropping soil

Fěng

Wei

et al. 2020

Agronomy Journal

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“…After the concentration of HS in rhizosphere increases by the irrigation, two contributions of HS to plant growth are presumably proposed: (1) straightening out soil fertility, which makes nutrient more available; (2) directly reaching out plant cell walls on the root surface so that plant can take up nutrients (Olaetxea et al, 2018). Regarding agronomic outcome in practice, Suman et al (2016Suman et al ( , 2017 showed the impact of the combined application of chemical fertilizer and HA in fertigation on productivity on capsicum and tomato under openfield conditions, concluding that HA could replace up to 20% of fertilizer. Selladurai and Purakayastha (2016) used a similar combination of liquid fertilizer by using the pedal-operated sprayer in soil in the open field, and they improved N, P, and K use efficiencies by 16.4, 9.3, and 18.3%, respectively.…”

Section: Fertigationmentioning

confidence: 99%

From Lab to Field: Role of Humic Substances Under Open-Field and Greenhouse Conditions as Biostimulant and Biocontrol Agent

et al. 2020

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The demand for biostimulants has been growing at an annual rate of 10 and 12.4% in Europe and Northern America, respectively. The beneficial effects of humic substances (HS) as biostimulants of plant growth have been well-known since the 1980s, and they can be supportive to a circular economy if they are extracted from different renewable resources of organic matter including harvest residues, wastewater, sewage sludge, and manure. This paper presents an overview of the scientific outputs on application methods of HS in different conditions. Firstly, the functionality of HS in the primary and secondary metabolism under stressed and non-stressed cropping conditions is discussed along with crop protection against pathogens. Secondly, the advantages and limitations of five different types of HS application under open-fields and greenhouse conditions are described. Key factors, such as the chemical structure of HS, application method, optimal rate, and field circumstances, play a crucial role in enhancing plant growth by HS treatment as a biostimulant. If we can get a better grip on these factors, HS has the potential to become a part of circular agriculture.

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“…Humic acid is a kind of organic matter produced and accumulated by animal and plant remains through the decomposition and transformation of microorganisms with a series of geochemistry processes. Combined with various inorganic fertilizers, humic acid can improve the soil quality, enhance fertilizer utilization rate 7,8 , and promote crop yield and quality 9–11 . Most of the current research focuses on the physicochemical state of humic acid to improve the soil quality while few studies have been conducted to investigate the influence of humic acid on soil microbes.…”

Section: Introductionmentioning

confidence: 99%

Humic Acid Fertilizer Improved Soil Properties and Soil Microbial Diversity of Continuous Cropping Peanut: A Three-Year Experiment

Fěng

Wei

et al. 2019

Sci Rep

168

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Although humic acid has been demonstrated to improve the quality of some soil types, the long-term effects of humic acid on soil under continuous cropping peanut are not fully understood. This study aimed to investigate the continuous effects of humic acid on the physicochemical properties, microbial diversity, and enzyme activities of soil under continuous cropping peanut. In this study, a three-year consecutive experiment of cropping peanut was conducted in the North China Plain. In addition to the equal nitrogen, phosphorus, and potassium inputs, humic acid treatment was applied with inorganic fertilizers. Compared with control experiments, humic acid increased the yield and quality of continuous cropping peanut. To elucidate the mechanism of humic acid affecting the soil quality, various soil quality indicators were evaluated and compared in this study. It was found that humic acid increased soil nutrient contents, including the total soil nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, available potassium, and organic matter contents, which exhibited the maximum effect in the third year. Meanwhile, the urease, sucrase, and phosphatase activities in the soil significantly increased after treated with humic acid, of which the maturity period increased most significantly. The same results were observed for three consecutive years. Microbial diversity varied considerably according to the high throughput sequencing analysis. Specifically, the number of bacteria decreased while that of fungi increased after humic acid treatment. The abundance of Firmicutes in bacteria, Basidiomycota, and Mortierellomycota in fungi all increased, which have been reported as being beneficial to plant growth. In contrast, the abundance of Ascomycota in fungi was reduced, and most of the related genera identified are pathogenic to plants. In conclusion, humic acid improved the yield and quality of continuous cropping peanut because of improved physicochemical properties, enzymatic activities, and microbial diversity of soil, which is beneficial for alleviating the obstacles of continuous cropping peanut.

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Humic acid improved efficiency of fertigation and productivity of tomato

Cited by 26 publications

References 15 publications

Physiological effects of humic acid in peanut growing in continuous cropping soil

Physiological effects of humic acid in peanut growing in continuous cropping soil

From Lab to Field: Role of Humic Substances Under Open-Field and Greenhouse Conditions as Biostimulant and Biocontrol Agent

Humic Acid Fertilizer Improved Soil Properties and Soil Microbial Diversity of Continuous Cropping Peanut: A Three-Year Experiment

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