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F Giblin (2007)
12
E Malusa, L Tosi (2005)
Phosphorous acid residues in apples after foliar fertilization: results of field trialsFood Addit Contam, 22
PJC Stassen, JD Stadler (1988)
Seasonal uptake of phosphorus, potassium, calcium and magnesium by young peach treesS Afr J Plant Soil, 5
ME Fenn, M Coffey (1989)
Quantification of phosphonate and ethyl phosphonate in tobacco and tomato tissues and significance for the modePhytopathology, 79
ME Matheron, DJ Young, JC Matejka (1988)
Phytophthora root and crown rot of apple trees in ArizonaPlant Dis, 72
TJ Jackson (2000)
147Plant Pathol, 49
OA Akinsanmi, A Drenth (2013)
Phosphite and metalaxyl rejuvenate macadamia trees in decline caused by Phytophthora cinnamomiCrop Prot, 53
AW Whiley, PA Hargreaves, KG Pegg, VJ Doogan, LJ Ruddle, JB Saranah, PW Langdon (1995)
Changing sink strengths influence translocation of phosphonate in avocado (Persea americana mill.) treesAust J Agric Res, 46
AE McDonald, BR Grant, WC Plaxton (2001)
Phosphite (phosphorous acid): its relevance in the environment and agriculture and influence on plant phosphate starvation responseJ Plant Nutr, 24
GJ Beckers (2007)
425Curr Opin Plant Biol, 10
G Thomas (2008)
Using phosphonates effectively to control Phytophthora root rot in avocadosTalking Avocados, 2008
MI Francis, A Redondo, JK Burns, JH Graham (2009)
Soil application of imidacloprid and related SAR-inducing compounds produces effective and persistent control of citrus cankerEur J Plant Pathol, 124
M Garbelotto, DJ Schmidt, TY Harnik (2007)
Phosphite injections and bark application of phosphite+ Pentrabark™ control sudden oak death in coast live oakArboricult Urban For, 33
BL Shearer, CE Crane, PM Scott, GE Hardy STJ (2012)
Variation between plant species of in-planta concentration and effectiveness of low-volume phosphite spray on Phytophthora cinnamomi lesion developmentAustralas Plant Pathol, 41
CJ Wilkinson, JM Holmes, KM Tynan, IJ Colquhoun, JA McComb, GSJ Hardy, B Dell (2001)
Ability of phosphite applied in a glasshouse trial to control Phytophthora cinnamomi in five plant species native to Western AustraliaAustralas Plant Pathol, 30
JH Graham (2011)
49N Z J For Sci, 41
D Guest, B Grant (1991)
The complex action of phosphonates as antifungal agentsBiol Rev, 66
M Merwe, J Kotze (1994)
Fungicidal action of phosphite in avocado root tips on Phytophthora cinnamomiSAAG Y, 17
WF Wilcox (1993)
Incidence and severity of crown and root rots on four apple rootstocks following exposure to Phytophthora species and waterloggingJ Am Soc Hortic Sci, 118
A McLeod, SL Masikane, P Novela, J Ma, P Mohale, M Nyoni, M Stander, JPB Wessels, P Pieterse (2018)
Quantification of root phosphite concentrations for evaluating the potential of foliar phosphonate sprays for the management of avocado root rotCrop Prot, 103
K Massoud, T Barchietto, T Rudulier, L Pallandre, L Didierlaurent, M Garmier, F Ambard-Bretteville, JM Seng, P Saindrenan (2012)
Dissecting phosphite-induced priming in Arabidopsis infected with Hyaloperonospora arabidopsidisPlant Physiol, 159
Y Cohen (1986)
311Annu Rev Phytopathol, 24
M Mazzola, LM Manici (2012)
Apple replant disease: role of microbial ecology in cause and controlAnnu Rev Phytopathol, 50
BL Shearer, CE Crane (2009)
Influence of site and rate of low-volume aerial phosphite spray on lesion development of Phytophthora cinnamomi and phosphite persistence in Lambertia inermis var. inermis and Banksia grandisAustralas Plant Pathol, 38
MI Francis (2009)
283Eur J Plant Pathol, 124
G Psarras, IA Merwin, AN Lakso, JA Ray (2000)
Root growth phenology, root longevity, and rhizosphere respiration of field grown ‘Mutsu' apple trees on ‘Malling 9′ rootstockJ Am Soc Hortic Sci, 125
RS Utkhede, EM Smith (1993)
Long-term effects of chemical and biological treatments on crown and root rot of apple trees caused by Phytophthora cactorumSoil Biol Biochem, 25
N Miyake, H Nagai, S Kato, M Matsusaki, H Ishikawa, K Kageyama (2015)
Detection of damping-off of cape gooseberry caused by Pythium aphanidermatum and its suppression with phosphonateJ Gen Plant Pathol, 81
PJ Cook (2009)
809Plant Dis, 93
CE Crane (2014)
143Australas Plant Pathol, 43
Y Cohen, MD Coffey (1986)
Systemic fungicides and the control of oomycetesAnnu Rev Phytopathol, 24
OA Akinsanmi (2013)
29Crop Prot, 53
JM Darvas, JC Toerien, DL Milne (1984)
Control of avocado root rot by trunk injection with phosetyl-AlPlant Dis, 68
WH Loescher (1990)
274HortScience, 25
GESJ Hardy (2001)
133Australas Plant Pathol, 30
R Smillie, B Grant, D Guest (1989)
The mode of action of phosphite: evidence for both direct and indirect modes of action on three Phytophthora spp. in plantsPhytopathology, 79
TJ Jackson, T Burgess, I Colquhoun, GESJ Hardy (2000)
Action of the fungicide phosphite on Eucalyptus marginata inoculated with Phytophthora cinnamomiPlant Pathol, 49
M Garbelotto (2007)
309Arboricult Urban For, 33
JH Graham (2011)
Phosphite for control of Phytophthora diseases in citrus: model for management of Phytophthora species on forest trees?N Z J For Sci, 41
YT Tewoldemedhin, M Mazzola, WJ Botha, CF Spies, A McLeod (2011)
Characterization of fungi (Fusarium and Rhizoctonia) and oomycetes (Phytophthora and Pythium) associated with apple orchards in South AfricaEur J Plant Pathol, 130
F Giblin, K Pegg, G Thomas, A Whiley, J Anderson, L Smith (2007)
Proceedings of sixth world avocado congress (Actas VI Congreso Mundial del Aguacate)
MA Carmona (2018)
366Pest Manag Sci, 74
GESJ Hardy, S Barrett, BL Shearer (2001)
The future of phosphite as a fungicide to control the soilborne plant pathogen Phytophthora cinnamomi in natural ecosystemsAustralas Plant Pathol, 30
ME Fenn (1989)
76Phytopathology, 79
D Guest (1991)
159Biol Rev, 66
CE Crane, BL Shearer (2014)
Comparison of phosphite application methods for control of Phytophthora cinnamomi in threatened communitiesAustralas Plant Pathol, 43
M Oostendorp, W Kunz, B Dietrich, T Staub (2001)
Induced disease resistance in plants by chemicalsEur J Plant Pathol, 107
MA Carmona, FJ Sautua, PE Grijalba, M Cassina, O Perez-Hernanzed (2018)
Effect of potassium and manganese phosphites in the control of Pythium damping-off in soybean: a feasible alternative to fungicide seed treatmentPest Manag Sci, 74
WH Loescher, T McCamant, JD Keller (1990)
Carbohydrate reserves, translocation, and storage in woody plant rootsHortScience, 25
CFJ Spies, M Mazzola, A McLeod (2011)
Characterisation and detection of Pythium and Phytophthora species associated with grapevines in South AfricaEur J Plant Pathol, 131
JM Darvas (1984)
691Plant Dis, 68
PJ Cook, PJ Landschoot, MJ Schlossberg (2009)
Inhibition of Pythium spp. and suppression of Pythium blight of turf grasses with phosphonate fungicidesPlant Dis, 93
GJ Beckers, U Conrath (2007)
Priming for stress resistance: from the lab to the filedCurr Opin Plant Biol, 10
Phosphonate fungicides are registered on various tree crops in South Africa for the management of oomycete root rot pathogens, but not on apple trees. The study investigated several phosphonate treatments previously evaluated independently by technical advisors in South Africa. A replicated orchard trial was conducted in non-bearing asymptomatic orchards; tree roots were infected by oomycetes but foliar symptoms were absent. Phosphonate foliar-, trunk paint- and soil drench treatments were equally effective, and consistently resulted in a significant reduction in Phytophthora cactorum and Pythium irregulare root DNA quantities relative to the non-treated control. The latter was not always true for phosphonate trunk spray treatments. Trunk paint applications applied at an annual dosage of 40 g phosphorous acid/tree yielded significantly higher root phosphite (breakdown product of phosphonates) concentrations than the soil drench and trunk spray applications; the latter were applied at lower annual dosages of 7.5 g a.i./tree and 20 g a.i./tree, respectively. Foliar sprays applied at a low annual dosage (1.8 to 3.0 g a.i./tree) often outperformed the soil drench and trunk spray treatments in root phosphite concentrations. No clear association was evident between root phosphite concentrations and pathogen suppression. Root phosphite typically peaked at 8-weeks post-treatment for winter applications, and between 2- to 4-weeks for summer applications. A rapid decline in root phosphite was evident over the 12-week summer period, but not for winter applications. Monitoring root growth in the untreated control plots showed that root growth was continuous but that it peaked in summer, with reduced growth in winter.
Australasian Plant Pathology – Springer Journals
Published: Jun 6, 2019
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