Promotion of Lateral Root Growth and Leaf Quality of Flue-Cured Tobacco by the Combined Application of Humic Acids and NPK Chemical Fertilizers

Shen, Hong; Shen, Jun Zhang; Li, Yue; Lai, Yong Lin; Jia, Zhi; Yi, Jian Hua

doi:10.1017/s0014479716000065

Cited by 7 publications

(6 citation statements)

References 27 publications

(49 reference statements)

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“…However, no significant correlation between tobacco sugar and elevation ( p > 0.05) might be due to the complex and changeable soil properties across all the samples (Table S1 ). In this study, the low potassium level in almost all samples corresponds to a previous research that tobacco potassium content is typically lower than 2% in China 30 , results in restricting the improvement of tobacco quality 6 . The results of our study showed correlations between the tobacco potassium and soil AvK, nitrate, AvP, as well as elevation (Fig.…”

Section: Discussionsupporting

confidence: 86%

“…It is of utmost attention that increasing the potassium levels in tobacco leaves is a vital but difficult work in tobacco planting in China 6 , 43 . Despite that the tobacco potassium had no relationship with soil fungal communities at the species level, its positive association with soil Trichoderma genus (r = 0.525, p < 0.05) would make it possible in improving the potassium content by biotechnology.…”

Section: Discussionmentioning

confidence: 99%

“…Previously, it is reported that the analysis of smoking and appearance quality of tobacco leaves was greatly dependent on individual judgment, while chemical components were evaluated using scientific apparatus 4 which showed that the chemical properties of tobacco leaves were consistent with good smoking quality 5 . Therefore, chemical constitutes were the appropriate way to certify the quality of flue-cured tobacco among the three series indexes considering that these contents reflected the taste and aroma of tobacco leaves 6 – 8 . The tobacco quality is mainly influenced by the climate, soil properties, and microorganism as the climatic factors were reported to be the main factor influencing the tobacco quality in Yunnan Province, Southwest China 9 .…”

Section: Introductionmentioning

confidence: 99%

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Soil fungal communities affect the chemical quality of flue-cured tobacco leaves in Bijie, Southwest China

Wang

Zhang

et al. 2022

Sci Rep

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Soil microorganisms could affect the quality of tobacco leaves, however, little is known about the association of tobacco chemical components and soil fungal communities. In the present study, the relationship between soil fungi and tobacco quality based on chemical components in Bijie was investigated. The results showed that the total harmony scores (THS) of the analyzed tobacco leaves ranged from 46.55 ± 3.5 to 91.55 ± 2.25. Analyses of chemical components revealed that high contents of nicotine (≥ 1.06%) and sugar (total sugar: ≥ 22.96%, reducing sugar: ≥ 19.62%), as well as low potassium level (≤ 2.68%) were the main factors limiting the quality of flue-cured tobacco leaves. Pearson correlation analysis indicated that soil nitrate, available potassium/phosphorous, and organic matter significantly correlated with tobacco nicotine, potassium, and chloride levels (p < 0.05). Besides, the analysis of alpha- and beta-diversity of soil fungal communities implied that fungal structure rather than the richness affected the chemical quality of tobacco. In detail, the relative abundance of Humicola olivacea species in soils was positively correlated with the THS of tobaccos (r = 0.52, p < 0.05). Moreover, the species including Mortierella alpina, Mortierella hyalina, Tausonia pullulan, and Humicola olivacea were negatively correlated with tobacco sugar (r ≤ − 0.45, p < 0.05) while, Codinaea acaciae and Saitozyma podzolica species were negatively correlated with tobacco nicotine (r ≤ − 0.51, p < 0.05). The present study provides a preliminary basis for utilizing fungal species in soils to improve the chemical quality of tobacco in the studied area.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil fungal communities affect the chemical quality of flue-cured tobacco leaves in Bijie, Southwest China

Wang

Zhang

et al. 2022

Sci Rep

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“…The AUX-like effect is the most well-known phytohormonal behavior of HS and has been examined in the literature for over half a century [41]. Root elongation and lateral root emergence are recognized, as morphological impacts of HA [42,43]. This effect has been associated with the activation of the plasma membrane (PM) enzyme H + -ATPase by small molecules present in HA endowed with auxinic activity [42].…”

Section: Auxin (Aux)mentioning

confidence: 99%

Interaction between Humic Substances and Plant Hormones for Phosphorous Acquisition

Jindo

Canellas

Albacete³

et al. 2020

Agronomy

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Phosphorus (P) deficiency is a major constraint in highly weathered tropical soils. Although phosphorous rock reserves may last for several hundred years, there exists an urgent need to research efficient P management for sustainable agriculture. Plant hormones play an important role in regulating plant growth, development, and reproduction. Humic substances (HS) are not only considered an essential component of soil organic carbon (SOC), but also well known as a biostimulant which can perform phytohormone-like activities to induce nutrient uptake. This review paper presents an overview of the scientific outputs in the relationship between HS and plant hormones. Special attention will be paid to the interaction between HS and plant hormones for nutrient uptake under P-deficient conditions.

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“…Cai et al (2013) found that a combination of compost and chemical fertilizer (1:1) could improve the nitrogen use efficiency and reduce N 2 O emissions from the soil during corn-wheat rotation. Shen et al (2017) combined applications of humic acid and NPK fertilizer and found that these fertilizers increased the biomass of flue-cured tobacco by 36.9%, increased the root biomass of the soil layer by 0 to 20 cm, and increased the yield by 12.2%. Zhang et al (2016) found that replacing 30% nitrogen fertilizer with compost (cow manure) increased nitrogen absorption, yield, and soil invertase activity, reduced nitrogen loss, and improved soil quality after 3 years of experiments.…”

mentioning

confidence: 99%

Increasing Organic Fertilizer and Decreasing Drip Chemical Fertilizer for Two Consecutive Years Improved the Fruit Quality of ‘Summer Black’ Grapes in Arid Areas

Zhao¹,

He²,

Liu³

et al. 2020

horts

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The use of water-soluble chemical fertilizers for years under drip irrigation conditions results in soil compaction, fertility decline, and fruit quality decrease in arid areas. Currently, little research has been reported regarding the effects of increasing organic fertilizer and reducing drip chemical fertilizer on the growth of grape plants under different conditions in arid areas. In this study, five different treatments were conducted. Compared with no fertilizer for 3 consecutive years (CK) and single fertilizer for 3 consecutive years (T0), organic fertilizer plus 1 year of reducing drip chemical fertilizer (T1), organic fertilizer plus 2 years of reducing drip chemical fertilizer (T2), and organic fertilizer plus 3 years of reducing drip chemical fertilizer (T3) improved the soil pH, electrical conductivity (EC) values, and soil organic matter content to different degrees during early growth stages (15 days after anthesis) and mature stages (75 days after anthesis). The available N, P, and K contents in the T1 and T2 treatments increased significantly. With the T2 treatment, the longitudinal and transverse diameters of the ‘Summer Black’ grapes were the largest during the two fruit expansion periods. The anthocyanin content of grape peel with the T2 treatment was 22.0% higher than that with the T0 treatment. The soluble solids, sugar–acid ratio, various sugar contents, vitamin C, and total phenol of the fruit increased significantly with the T2 treatment, indicating that the T2 treatment was best for promoting grape growth and fruit quality and that the T3 treatment was the second best.

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Promotion of Lateral Root Growth and Leaf Quality of Flue-Cured Tobacco by the Combined Application of Humic Acids and NPK Chemical Fertilizers

Cited by 7 publications

References 27 publications

Soil fungal communities affect the chemical quality of flue-cured tobacco leaves in Bijie, Southwest China

Soil fungal communities affect the chemical quality of flue-cured tobacco leaves in Bijie, Southwest China

Interaction between Humic Substances and Plant Hormones for Phosphorous Acquisition

Increasing Organic Fertilizer and Decreasing Drip Chemical Fertilizer for Two Consecutive Years Improved the Fruit Quality of ‘Summer Black’ Grapes in Arid Areas

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