Changes in Soil Chemical Properties and Microbial Activities in Response to the Fungicide Ridomil Gold Plus Copper

Démanou, Joseph; Monkiéjé, Adolphe; Njin, Thomas; Foto, Samuel M; Nola, Moı̈se; Togouet, Serges H Zebaze; Kemka, Norbert

doi:10.3390/ijerph2004010026

Cited by 34 publications

(18 citation statements)

References 33 publications

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“…Among a variety of soil enzymes tested by different authors, dehydrogenases, β-glucosidase (Monkiedje et al 2002, Demenaou et al 2004) and alkaline phosphatase (Monkiedje et al 2002) were found to be the most sensitive to the fungicides penetrating into the soil. demonstrated that benomyl and captan inhibited the activity of dehydrogenases and acid phosphatase.…”

Section: Resultsmentioning

confidence: 96%

Dehydrogenases, urease and phosphatases activities of soil contaminated with fungicides

Jastrzębska¹,

Kucharski²

2007

Plant Soil Environ.

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A greenhouse experiment was performed to determine the effects of the fungicides containing cyprodinil as well as dimoxystrobin and epoxiconazole on the activity of soil enzymes: dehydrogenases, urease, acid phosphatase and alkaline phosphatase, depending on fungicide dose (0 -control, 1 -recommended dose, 10-fold dose and 100-fold dose), the method of soil management (soil cropped with spring barley cv. Start, and uncropped soil) and the time of fungicide action (14, 28, 42 and 56 days). The experiment was established on Eutric Cambisols with pH KCl = 6.7. It was found that the enzymatic activity of the soil was affected primarily by such factors as fungicide dose, method of soil management and time of fungicide action, and to a much lesser degree by the type of fungicide. Fungicide contamination of the soil significantly inhibited the activity of dehydrogenases and urease, and produced a significant negative effect (100-fold dose) on spring barley yield. A higher activity of dehydrogenases, urease, acid phosphatase and alkaline phosphatase was recorded in the soil cropped with spring barley cv. Start.

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Section: Resultsmentioning

confidence: 96%

Dehydrogenases, urease and phosphatases activities of soil contaminated with fungicides

Jastrzębska¹,

Kucharski²

2007

Plant Soil Environ.

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“…The microbial mineralization of organic compounds and associated biotransformations such as nutrient dynamics and their bioavailability are also more or less adversely affected by the pesticides (Demanou et al, 2004;Kinney et al, 2005;Mahia et al, 2008;Niewiadomska, 2004 pesticides also reduce soil enzymatic activities that act as a ''biological index'' of soil fertility and biological processes in the soil environment (Antonious, 2003;Monkiedje et al, 2002). There are also reports documenting the ability of soil microorganisms to degrade pesticides in the soil environment (Hussain et al, 2007;Kumar and Philip, 2006).…”

Section: Introductionmentioning

confidence: 99%

Impact of Pesticides on Selected Soil Mycoflora

Saramanda¹,

Kaparapu²

2017

Int. J. Adv. Res. Biol. Sci

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The aim of the present investigation was to study the effect of nine pesticides and two biocides tested on fungal isolates from agricultural soil samples (Coffee,Turmeric and Vegetable) of Lammasinghi village, Chintapalli mandal in Visakhapatnam district. Nine different pesticides namely Fungicides, Insecticides and Herbicides and biocides were taken into study. During the investigation period Pencillium chrysogenum, Fusarium, Aspergillus niger, Alternaria, Aspergillus oryzae, Pencillium and Cladosporium fungal colonies were isolated. The maximum fungal counts were observed in agriculture field compared with hill area. The maximum fungal colony count (54 colonies) observed in Turmeric field and minimum count (20 colonies) observed in Vegetable field. In the hilly area the more colony count were seen in Vegetable field compared with Coffee and Turmeric. The short term inhibitory effect on the total fungal population was observed with the application of Fungicides, Insecticides and Herbicides. The study proved to be destructive on Aspergillus species by the use of Fungicides and Herbicides compared with Insecticides. The biological control did not inhibit their growth or merely in a lower degree.

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“…Possibly, vesiculararbuscular mycorrhizal root colonization was checked by the fungicide, as in the study of Hood et al (2004). When applied in a single dose of ≥1 g m −2 , Ridomol Gold Plus slightly stimulated N and P mineralization in trials on sandy loam soils at Yaoundé, Cameroon (Demanou et al 2004), although when the equivalent of ∼0.9 g m −2 was applied in another trial at the same site it did not significantly affect soil N and P availability (Monkiedje et al 2007). This suggests that the saprophytic fungi involved in decomposition had been little affected by the fungicide.…”

Section: Discussionmentioning

confidence: 99%

“…The fungicide combines two active ingredients, copper hydroxide (60%) and metalaxyl-M (6%), a.k.a. mefenoxam (Demanou et al 2004, Monkiedje et al 2007and references therein). In Cameroon it is used increasingly to control black pod disease on cacao tree farms, as well as diseases on a range of subsistence crops.…”

Section: Fungal Pathogen Exclusionmentioning

confidence: 99%

Do fungal pathogens drive density-dependent mortality in established seedlings of two dominant African rain-forest trees?

et al. 2010

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Abstract:Where one or a few tree species reach local high abundance, different ecological factors may variously facilitate or hinder their regeneration. Plant pathogens are thought to be one of those possible agents which drive intraspecific density-dependent mortality of tree seedlings in tropical forests. Experimental evidence for this is scarce, however. In an African rain forest at Korup, we manipulated the density of recently established seedlings (∼5-8 wk old; low vs. high-density) of two dominant species of contrasting recruitment potential, and altered their exposure to pathogens using a broad-spectrum fungicide. Seedling mortality of the abundantly recruiting subcanopy tree Oubanguia alata was strongly density-dependent after 7 mo, yet fungicide-treated seedlings had slightly higher mortality than controls. By contrast, seedling mortality of the poorly recruiting large canopy-emergent tree Microberlinia bisulcata was unaffected by density or fungicide. Ectomycorrhizal colonization of M. bisulcata was not affected by density or fungicide either. For O. alata, adverse effects of fungicide on its vesicular arbuscular mycorrhizas may have offset any possible benefit of pathogen removal. We tentatively conclude that fungal pathogens are not a likely major cause of density dependence in O. alata, or of early post-establishment mortality in M. bisulcata. They do not explain the latter's currently very low recruitment rate at Korup.

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Changes in Soil Chemical Properties and Microbial Activities in Response to the Fungicide Ridomil Gold Plus Copper

Cited by 34 publications

References 33 publications

Dehydrogenases, urease and phosphatases activities of soil contaminated with fungicides

Dehydrogenases, urease and phosphatases activities of soil contaminated with fungicides

Impact of Pesticides on Selected Soil Mycoflora

Do fungal pathogens drive density-dependent mortality in established seedlings of two dominant African rain-forest trees?

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