Estimating Copper, Manganese and Zinc Micronutrients in Fungicide Applications

Poh, Bee Ling; Gevens, A. J.; Simonne, Eric H.; Snodgrass, Crystal

doi:10.32473/edis-hs1159-2009

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The toxicity results from the ability of Cu to precipitate proteins and cause coagulation of the cytoplasm (Milinović and Đurović, 2007 ). Many Cu-containing fungicides are prepared using copper hydroxide as the active ingredient and may contain as much as 50% Cu metallic equivalent (Poh et al 2009 ). The group of HM-based pesticides may also contain Mn and Zn as the main components.…”

Section: Introductionmentioning

confidence: 99%

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Fungal and oomycete pathogens and heavy metals: an inglorious couple in the environment

et al. 2022

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Heavy metal (HM) contamination of the environment is a major problem worldwide. The rate of global deposition of HMs in soil has dramatically increased over the past two centuries and there of facilitated their rapid accumulation also in living systems. Although the effects of HMs on plants, animals and humans have been extensively studied, yet little is known about their effects on the (patho)biology of the microorganisms belonging to a unique group of filamentous eukaryotic pathogens, i.e., fungi and oomycetes. Much of the literature concerning mainly model species has revealed that HM stress affects their hyphal growth, morphology, and sporulation. Toxicity at cellular level leads to disturbance of redox homeostasis manifested by the formation of nitro-oxidative intermediates and to the induction of antioxidant machinery. Despite such adverse effects, published data is indicative of the fact that fungal and oomycete pathogens have a relatively high tolerance to HMs in comparison to other groups of microbes such as bacteria. Likely, these pathogens may harbor a network of detoxification mechanisms that ensure their survival in a highly HM-polluted (micro)habitat. Such a network may include extracellular HMs immobilization, biosorption to cell wall, and/or their intracellular sequestration to proteins or other ligands. HMs may also induce a hormesis-like phenomenon allowing the pathogens to maintain or even increase fitness against chemical challenges. Different scenarios linking HMs stress and modification of the microorganisms pathogenicity are disscused in this review.

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Section: Introductionmentioning

confidence: 99%

“…Some antifungal products available contain even all three elements, e.g . ManKocide® with 30% Cu, 3% Mn and 0.4% Zn (Poh et al 2009 ). It is worth emphasizing that Zn is also used to control human fungal diseases.…”

Section: Introductionmentioning

confidence: 99%

Fungal and oomycete pathogens and heavy metals: an inglorious couple in the environment

et al. 2022

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Comparison of Different Cover Crops on DTPA-Extractable Micronutrients in Hazelnut and Apple Orchards

Demir¹,

Işık²

2019

Türk Tarım Ve Doğa Bilimleri Dergisi

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This study was conducted to compare the effect of different cover crop treatments on DTPA-extractable micronutrients (Fe, Mn, Zn, Cu) and soil pH in a hazelnut orchard with clay loam texture located in Samsun province and in an apple orchard with sandy loam texture located in Kayseri province of Turkey. For this purpose, Trifolium repens (TR), Festuca rubra subsp. rubra (FRR), Festuca arundinacea (FA), T. repens (40%) + F. rubra rubra (30%) + F. Arundinacea (30%) mixture (TFF), Vicia villosa Roth. (VV) and Trifolium meneghinianum Celm. (TM) were used as cover crops in the experiments. Experiments also included a plot mechanically cultivated (MC), herbicide treatment (HC) and bare control plot (BC). Soil samples were taken from two different depths (0-20 and 20-40 cm) in each plot. Experiments were conducted in randomized complete blocks design with 4 replications. While the highest mean extractable Fe content was determined in the VV treatment in the hazelnut orchard (74.35 mg kg -1 ) and in the apple orchard (3.12 mg kg -1 ), the highest mean extractable Zn content in the hazelnut and apple orchards were obtained in the TR treatment (2.45 and 1.08 mg kg -1 , respectively). While the highest mean extractable Mn content was also obtained in the VV (92.87 mg kg -1 ) in the hazelnut orchard, the highest mean extractable Mn content was determined in the TR (6.35 mg kg -1 ) in the apple orchard. The greatest significant negative correlations in the TFF treatment were observed between pH and extractable Mn content (0.914**) in the hazelnut orchard and in the TR treatment between pH and extractable Fe content (0.968**) in the apple orchard. ÖzetBu çalışma, ülkemizin Samsun ilinde yeralan killi tın tekstürlü bir fındık bahçesinde ve Kayseri ilinde yeralan kumlu tın tekstürlü elma bahçesinde DTPA ile ekstrakte edilebilir mikro besin elementi (Fe, Mn, Zn and Cu) içerikleri ve toprak pH'sı üzerine farklı örtücü bitkilerin etkilerini karşılaştırmak için yürütülmüştür. Denemede örtücü bitki olarak Trifolium repens (TR), Festuca rubra subsp. rubra (FRR), Festuca arundinacea (FA), T. repens (40%) + F. rubra rubra (30%) + F. Arundinacea (30%) karışımı (TFF), Vicia villosa Roth. (VV) ve Trifolium meneghinianum Celm. (TM) kullanılmıştır. Denemede mekanik mücadele (MC), herbisitle mücadele (HC) ve yalın kontrol (BC) parselleri de yer almıştır. Toprak örnekleri her parselden olmak üzere iki faklı derinlikten (0-20 and 20-40 cm) alınmıştır. Denemeler, tesadüf blokları deneme desenine göre dört tekerrürlü olarak yürütülmüştür. En yüksek alınabilir Fe fındık bahçesinde (74.35 mg kg -1 ) ve elma bahçesinde (3.12 mg kg -1 ) VV uygulamasında elde edilirken, en yüksek alınabilir Zn içeriği ise fındık bahçesinde (2.45 mg kg -1 ) ve elma bahçesinde (1.08 mg kg -1 ) TR uygulamasında belirlenmiştir. Fındık bahçesinde en yüksek alınabilir Mn içeriği VV uygulamasında (92.87 mg kg -1 ) tespit edilirken, elma bahçesinde ise TR uygulamasında (6.35 mg kg -1 ) bulunmuştur. En yüksek önemli negatif korelasyonlar fındık bahçesinde TFF uygulamasında pH...

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Understanding and Applying Chelated Fertilizers Effectively Based on Soil pH

Liu

Hanlon

2012

EDIS

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Plant nutrients are one of the environmental factors essential for crop growth and development. Nutrient management is crucial for optimal productivity in commercial crop production. Those nutrients in concentrations of ≤ 100 parts per million (ppm) in plant tissues are described as micronutrients and include iron (Fe), zinc (Zn), manganese (Mn), copper (Cu), boron (B), chlorine (Cl), molybdenum (Mo), and nickel (Ni). Micronutrients such as Fe, Mn, Zn, and Cu are easily oxidized or precipitated in soil, and their utilization is, therefore, not very efficient. Chelated fertilizers have been developed to increase micronutrient utilization efficiency. This 7-page fact sheet provides an overview of chelated fertilizers and considerations for their use to county Extension faculty, growers, and students who are interested in commercial crop production. Written by Guodong Liu, Edward Hanlon, and Yuncong Li, and published by the UF Department of Horticultural Sciences, November 2012. HS1208/HS1208: Understanding and Applying Chelated Fertilizers Effectively Based on Soil pH (ufl.edu)

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Estimating Copper, Manganese and Zinc Micronutrients in Fungicide Applications

Cited by 3 publications

References 2 publications

Fungal and oomycete pathogens and heavy metals: an inglorious couple in the environment

Fungal and oomycete pathogens and heavy metals: an inglorious couple in the environment

Comparison of Different Cover Crops on DTPA-Extractable Micronutrients in Hazelnut and Apple Orchards

Understanding and Applying Chelated Fertilizers Effectively Based on Soil pH

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