The use of phosphonates in agriculture. Chemical, biological properties and legislative issues

M, Manghi; Masiol, Mauro; Calzavara, R; Graziano, P. L.; Peruzzi, Elisabetta; Pavoni, Bruno

doi:10.1016/j.chemosphere.2021.131187

Cited by 29 publications

(16 citation statements)

References 84 publications

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“…In most European countries, including Italy, K-phosphonate has until now been regulated by Reg. CE n. 369/2013 and registered as fertilizers [ 59 ], thus with almost no restrictions. Since scientific evidence shows that phosphonates have no nutritional role in the plant to justify their use as fertilizer, recently, the European Directive EU 1009/2019 has restricted their use, with a ban on their use in both conventional and organic agriculture.…”

Section: Discussionmentioning

confidence: 99%

Potassium Phosphonate Induces Resistance in Sweet Chestnut against Ink Disease Caused by Phytophthora Species

et al. 2023

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Ink disease, caused by Phytophthora spp., represents a serious threat to sweet chestnuts throughout their distribution area. Among the control strategies, new perspectives have been offered by using potassium phosphonate, which indirectly controls Phytophthora diseases by acting on both host physiology and host-pathogen interactions. In this study, we tested in planta the effectiveness of trunk injection with K-phosphonate against seven different Phytophthora species associated with ink disease. For the two most aggressive species, P. cinnamomi and P. ×cambivora, the treatments were repeated at two different environmental conditions (a mean temperature of 14.5 °C vs. 25 °C) and tree phenology stages. The results obtained in this study demonstrated that K-phosphonate could contain the development of Phytophthora infection in phloem tissues. However, its effectiveness varied based on the concentration applied and the Phytophthora species tested. A concentration of 280 g/L of K-phosphonate was the most effective, and in some cases, callus formation around the necrotic lesion was detected. Overall, this study broadens the knowledge of endotherapic treatments with K-phosphonate as an effective measure for managing chestnut ink disease. Interestingly, the increase in mean temperature had a positive impact on the development of P. cinnamomi lesions on chestnut phloem tissues.

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Section: Discussionmentioning

confidence: 99%

Potassium Phosphonate Induces Resistance in Sweet Chestnut against Ink Disease Caused by Phytophthora Species

et al. 2023

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“…Phosphonates and phosphonic acids are a very interesting class of compounds and examples of their use can be found in a number of different areas, including pharmaceuticals [1][2][3][4][5][6], metal chelation [7][8][9], anti-corrosion coatings [10][11][12], fertilizers [13,14], proton conduction [15][16][17], and catalysis [18], amongst others. Phosphonates can also be employed as organic linkers in combination with metal ions to afford coordination polymers and metal-organic frameworks (MOFs), or more aptly, metal phosphonate frameworks [19,20].…”

Section: Introductionmentioning

confidence: 99%

An alternative C–P cross-coupling route for the synthesis of novel V-shaped aryldiphosphonic acids

Shearan¹,

Andreoli²,

Taddei³

2022

Beilstein J. Org. Chem.

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The synthesis of phosphonate esters is a topic of interest for various fields, including the preparation of phosphonic acids to be employed as organic linkers for the construction of metal phosphonate materials. We report an alternative method that requires no solvent and involves a different order of addition of reactants to perform the transition-metal-catalyzed C–P cross-coupling reaction, often referred to as the Tavs reaction, employing NiCl2 as a pre-catalyst in the phosphonylation of aryl bromide substrates using triisopropyl phosphite. This new method was employed in the synthesis of three novel aryl diphosphonate esters which were subsequently transformed to phosphonic acids through silylation and hydrolysis.

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“…Phosphonates and phosphonic acids are a very interesting class of compounds and examples of their use can be found in a number of different areas, including pharmaceuticals [1][2][3][4][5][6], metal chelation [7][8][9], anti-corrosion coatings [10][11][12], and fertilisers [13][14], amongst others. Phosphonates can also be employed as organic linkers in combination with metal ions to afford coordination polymers and metalorganic frameworks (MOFs), or more aptly, metal phosphonate frameworks.…”

Section: Introductionmentioning

confidence: 99%

An improved C-P cross-coupling route for the synthesis of novel V-shaped aryldiphosphonic acids

Shearan¹,

Andreoli²,

Taddei³

2022

Preprint

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The synthesis of phosphonate esters is a topic of interest for various fields, including the preparation of phosphonic acids to be employed as organic linkers for the construction of metal phosphonate materials. Various methods have been reported to obtain phosphonate esters in the literature. Discussed here is the transition metal-catalysed cross-coupling reaction, often referred to as the Tavs reaction, which employs NiCl2 as a pre-catalyst in the phosphonylation of aryl bromide substrates using triisopropyl phosphite. We report an improvement to the existing method which decreases the reaction time from 24+ hours to around 4 hours, with yields above 80%. Compared to conventional methods, our procedure requires no solvent and involves a different order of addition of reactants. This new method was employed in the synthesis of three novel aryl phosphonate esters which were subsequently transformed to phosphonic acids through silylation and hydrolysis.

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The use of phosphonates in agriculture. Chemical, biological properties and legislative issues

Cited by 29 publications

References 84 publications

Potassium Phosphonate Induces Resistance in Sweet Chestnut against Ink Disease Caused by Phytophthora Species

Potassium Phosphonate Induces Resistance in Sweet Chestnut against Ink Disease Caused by Phytophthora Species

An alternative C–P cross-coupling route for the synthesis of novel V-shaped aryldiphosphonic acids

An improved C-P cross-coupling route for the synthesis of novel V-shaped aryldiphosphonic acids

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