Interactive Role of Fungicides and Plant Growth Regulator (Trinexapac) on Seed Yield and Oil Quality of Winter Rapeseed

Ijaz, Muhammad; Mahmood, Khalid; Honermeier, Bernd; Liebig, Justus

doi:10.3390/agronomy5030435

Cited by 17 publications

(9 citation statements)

References 26 publications

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“…Fungicides are among the most important and most commonly used groups of pesticides, which are applied to protect plants against fungal diseases. They contain one or more active substances, the action of which in fungal cells includes: arrest of mitosis and cell division; inhibition of respiration, synthesis of nucleic acids, amino acids and proteins, lipids and cell membranes, as well as cell wall melanin, but also inhibition of sterol and cell wall biosynthesis, and signal transduction (Petit et al 2012 ; Ijaz et al 2015 ). Fungicides primarily allow obtaining high plant yields, but they can also exert negative effects on the environment, including the soil, by disrupting its homeostasis.…”

Section: Introductionmentioning

confidence: 99%

The influence of chlorothalonil on the activity of soil microorganisms and enzymes

Baćmaga

Kucharski

2018

Ecotoxicology

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As one of the most widely used pesticides in agriculture, chlorothalonil can pose threat to soil ecosystems. Therefore, the impact of this substance on the development of microbiological and biochemical properties of the soil as well as on the growth of spring wheat was evaluated. The study was conducted with two soils (loamy sand with pHKCl 5.6 and sandy loam with pHKCl 7.00), to which fungicide was used in the following doses: 0.00, 0.166 (recommended dose), 1.660, and 16.60 mg kg−1 dry matter of soil (DM of soil). In addition, we determined the effectiveness of fertilizing substances (Lignohumat Super and Bioilsa N 12.5) in the restoration of soil homeostasis and chlorothalonil degradation in the soil. Chlorothalonil caused modifications in the count and biological diversity of soil microorganisms. It stimulated the growth of heterotrophic bacteria and actinobacteria, and inhibited the growth of fungi. This pesticide was a potent inhibitor of dehydrogenase, catalase and acid phosphatase activities. It showed variable effects on urease and alkaline phosphatase. The fungicide also a reduction the yield of dry matter of the aboveground parts of spring wheat. It should, however, be noted that these changes in the soil environment occurred after the introduction of higher doses of chlorothalonil. The fertilizing substances used contributed to enhanced microbial and biochemical activities of soils, while they did not significantly affect plant yields. The Bioilsa N 12.5 preparation was effective in chlorothalonil degradation, while Lignohumat Super reduced the degradation rate of the tested fungicide. Based on the conducted experiment, an ecological risk assessment of chlorothalonil was made by estimating the changes occurring in the soil environment evaluated through the microbiological and biochemical analyses of the soil.

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Section: Introductionmentioning

confidence: 99%

The influence of chlorothalonil on the activity of soil microorganisms and enzymes

Baćmaga

Kucharski

2018

Ecotoxicology

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“…Homogenous groups denoted with letters (a-k) were calculated separately for each enzyme and for each type of biostimulating substance Te-tebuconazole; Deh-dehydrogenases; Cat-catalase; Ure-urease; Pac-acid phosphatase; Pal-alkaline phosphatase; Glu-β-glucosidase; Aryl-arylsulfatase, r-Pearson's correlation coefficient preparations. Also, Ijaz et al (2015) in their study with Torpex, Folicur, Proline, Caramba, Otrivia, and Cantus preparations confirmed the fact that when fungicides are applied following producers' recommendations, they may increase the yield of crops, including winter rapeseed investigated in their study. In our experiment, compost and bird droppings turned out to be ineffective in improving spring barley yield.…”

Section: Spring Barley Yieldmentioning

confidence: 52%

Biostimulation as a process aiding tebuconazole degradation in soil

Baćmaga

Kucharski

2019

J Soils Sediments

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Purpose The purpose of this study was to compare effects of two biostimulating substances (compost and bird droppings) on the proliferation of microorganisms, enzymatic activity, and resistance of spring barley in soil exposed to tebuconazole fungicide. Both biostimulating substances were also assessed for their efficacy in tebuconazole degradation in soil. Materials and methods A pot vegetation experiment was performed with soil belonging to the Eutric Cambisols to test the effect of tebuconazole on the biological activity of soil. Its adverse effect on the biological properties of soil was minimized through the use of biostimulating substances (compost and bird droppings), the effect of which was expressed with the IF C/BD index. The RCh index was used to determine the effect of tebuconazole on the proliferation of soil microorganisms and enzymes, the BA 21 index was used to express soil fertility based on the activity of soil enzymes, whereas the RS index-to express the resistance of spring barley to the administered doses of tebuconazole. Finally, analyses were conducted to determine the efficacy of soil amendment with biostimulating substances in tebuconazole degradation. Results and discussion Study results demonstrate that tebuconazole caused significant changes in the proliferation of the tested groups of microorganisms, in the activity of soil enzymes, and in spring barley yield. It was especially noticeable in pots in which the soil was exposed to its highest dose, i.e., 2.499 mg kg −1. Soil supplementation with bird droppings had a positive effect on the development of soil microorganisms and on the enzymatic activity in the soil. In turn, compost addition to soil exerted various effects on the biological properties of soil. Both biostimulating substances failed to improve spring barley yield. Tebuconazole degradation was more intense in the soil fertilized with bird droppings than with compost. Conclusions Results of this study suggest that tebuconazole can affect the stability and health status of soil ecosystems by modifying their biological properties. The high sensitivity of soil microorganisms and enzymes to stress conditions makes them reliable environmental bioindicators. The strive for eliminating the adverse impact of fungicides on soil microbiome through the use of appropriate remediation methods, like, e.g., biostimulation, is of greater concern from the ecological perspective.

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“…Inclusion of the fungicide Caramba (a.i. metconazole 8.6 %) improved the yield-associated parameters (the number of siliques and the seeds per main stem) and seed yield, and also resulted in higher oil content (Ijaz et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

The influence of β-alanine derivative products on spring oilseed rape yield and oil quality

Kolosej

Jonuškienė

Venskutonis

et al. 2017

Zemdirbyste-Agriculture

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Please use the following format when citing the article: Kolosej R., Jonuškienė I., Venskutonis P. R., Kazernavičiūtė R., Brazienė Z., Jakienė E., Kvederavičiūtė K., Kanopka A., Vilys L., Mickevičius V. 2017. The influence of β-alanine derivative products on spring oilseed rape yield and oil quality. Field experiments showed that 125 mg l -1 NPNDT solution had the greatest effect on plant growth. In this treatment, the number of secondary branches increased by 54%, the rapeseed yield by 23% compared with the control treatment. The highest seed number per silique (24.5 seeds, or 7.5% higher than in the control) was determined in the treatment where oilseed rape seedlings had been sprayed with 75 mg l -1 NPNDT solution. The highest oil and protein contents in rapeseed were determined in the 75 mg l -1 NPNDT treatment. Compared with the control, a statistically significant increase in rapeseed oil amounted to 137.9 kg ha -1 or 17% and protein content to 6.2 g 100 g -1 or 31%. The increase in rapeseed yield was statistically significant (P < 0.05) in all treatments. The increase of oil content was positively correlated with the seed yield increase (P < 0.05) when oilseed rape was sprayed with the 50 mg l -1 concentration of NPNDT solution. The NPNDT had a positive effect on oil quality. It increased protein and flavonoid contents, reduced ash content in rapeseed and increased DPPH radical scavenging in rapeseed extract.

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Interactive Role of Fungicides and Plant Growth Regulator (Trinexapac) on Seed Yield and Oil Quality of Winter Rapeseed

Cited by 17 publications

References 26 publications

The influence of chlorothalonil on the activity of soil microorganisms and enzymes

The influence of chlorothalonil on the activity of soil microorganisms and enzymes

Biostimulation as a process aiding tebuconazole degradation in soil

The influence of β-alanine derivative products on spring oilseed rape yield and oil quality

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