Evaluation of Phosphonic (Phosphorous) Acid for Controlling Phytophthora Crown and Trunk Rot of Peach and Apricot.

Lim, T. M.; Jerie, P. H.

doi:10.1071/app9900134

Cited by 5 publications

(5 citation statements)

References 2 publications

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“…The management of Phytophthora diseases in forest ecosystems still represents a challenge since scarce field experimental data about control strategies is available. This study provides further evidence of the efficacy of phosphonates in suppressing Phytophthora infection in woody trees [ 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. Trunk injection with K-phosphonate significantly reduced the development of necrotic lesions on phloem tissues of chestnut trees artificially inoculated with a range of Phytophthora species associated with ink disease.…”

Section: Discussionmentioning

confidence: 72%

“…Overall, this study broadens the knowledge of using K-phosphonate to control chestnut ink disease caused by Phytophthora species [ 43 , 44 , 45 ]. Although field experiments are often time-consuming and expensive, this study provides a reliable and practical control treatment useful for sweet chestnut growers who have ink disease.…”

Section: Discussionmentioning

confidence: 91%

“…Several commercial phosphonate formulations are used on woody trees, including potassium, sodium, and ammonium phosphonate [ 34 , 42 ]. Stem injection with K-phosphonate (K 2 HPO 3 ) has been previously tested to control ink disease on sweet chestnut [ 43 , 44 , 45 ]. These studies were focused on the efficacy against either P .…”

Section: Introductionmentioning

confidence: 99%

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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: 72%

Section: Discussionmentioning

confidence: 91%

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

et al. 2023

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“…In plant tissues, fosetyl-Al, the active ingredient in Aliette fungicide, degrades to phosphorous acid (H 3 PO 3 ) (Coffey and Bower, 1984). Phosphorous acid dips, foliar sprays, or trunk injections were successful in controlling P. cinnamomi in avocado and pineapple [Ananas comosus (L.) Merr] (Pegg et al, 1990); P. palmivora in cocoa (Anderson and Guest, 1990;Holderness, 1990); P. cambivora in almond (Prunus amygdalus Batsch) and cherry (Prunus avium L.) (Wicks and Hall, 1990); and P. cactorum in peach (Prunus persica L. Batsch), apricot (Prunus armeniaca L.) (Lim et al, 1990) and strawberry (Ellis et al, 1998). Thus, our results support fi ndings in other studies of successful control of multiple phytophthora diseases with H 3 PO 3 .…”

Section: Discussionmentioning

confidence: 99%

“…Metalaxyl has been benefi cial when used as a component of an integrated management system including raised beds and/or genetic host resistance (Maloney et al, 1993;Wilcox et al, 1999b). Various forms of phosphorous acid also have been used in the management of different phytophthora diseases (Bristow and Windom, 1992;Lim et al, 1990;Pegg et al, 1990;Wicks and Hall, 1990).…”

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confidence: 99%

Suppression of Phytophthora Root Rot in Red Raspberries with Cultural Practices and Soil Amendments

Maloney¹,

Pritts²,

Wilcox³

et al. 2005

HortSci

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Various soil amendments and cultural practices were examined in both a phytophthora-infested (Phytophthora fragariae var. rubi) (+PFR) and uninfested field (–PFR) planted to `Heritage' red raspberries. Although plants in the +PFR field did not exhibit typical disease symptoms due to unseasonably dry weather, their growth was less than those in the –PFR field. After 2 years, plants in the +PFR site had the highest yields in plots treated with phosphorous acid or amended with gypsum, whereas compost-amended plots had the lowest yields in both +PFR and –PFR sites. A second field study confirmed the positive effect of gypsum on growth and yield of raspberries in an infested site. In a third study, `Titan' raspberries grown under greenhouse conditions in pots containing unamended soil from the infested site, then flooded, exhibited severe disease symptoms; however, pasteurization of the soil, treatment with phosphorous acid and metalaxyl fungicide, or gypsum amendment mostly prevented symptoms from developing. These three studies suggest that a preplant soil amendment containing certain readily available forms of calcium, such as found in gypsum, can help suppress phytophthora root rot and increase survival, growth and yield of raspberries in sites where the pathogen is present.

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Application of phosphite in a high-volume foliar spray delays and reduces the rate of mortality of fourBanksiaspecies infected withPhytophthora cinnamomi

Shearer¹,

Fairman²

2007

Austral. Plant Pathol.

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Evaluation of Phosphonic (Phosphorous) Acid for Controlling Phytophthora Crown and Trunk Rot of Peach and Apricot.

Cited by 5 publications

References 2 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

Suppression of Phytophthora Root Rot in Red Raspberries with Cultural Practices and Soil Amendments

Application of phosphite in a high-volume foliar spray delays and reduces the rate of mortality of fourBanksiaspecies infected withPhytophthora cinnamomi

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