Evaluation of potassium salt of phosphonic acid in Nagpur mandarin with special reference to Phytophthora management


  • Y V Ingle Dr. Panjabrao Deshmukh Krishi Vidyapeeth Author
  • D H Paithankar Dr. Panjabrao Deshmukh Krishi Vidyapeeth Author
  • A K Sadawarte Dr. Panjabrao Deshmukh Krishi Vidyapeeth Author
  • S R Bhonde Dr. Panjabrao Deshmukh Krishi Vidyapeeth Author




Foot-rot, Gummosis, Nagpur mandarin, Phytophthora, Potassium salt of phosphonic acid, PSPA


Phytophthora parasitica var. nicotianae is a major fungal pathogen that causes foot rot, root rot, crown rot, gummosis, leaf fall, and brown rot diseases in Nagpur mandarin in the entire Vidarbha region of Maharashtra. For the efficient management of root rot and gummosis due to Phytophthora, the potassium salt of phosphonic acid (PSPA) was evaluated under field and laboratory conditions. In field trials, infected plants were treated with different concentrations of PSPA by foliar spray and soil drenching. The results revealed that foliar spray + soil drenching of PSPA at 3 ml/liter water was better with respect to the average reduction in no. of lesion with oozing (28.39%), minimum in feeder root index (2.17), increase in canopy volume (11.15%) and higher fruit yield (65.89 kg/ per tree). The effect of PSPA was assayed at three different concentrations against P. nicotianae under in vitro. PSPA was found most effective in arresting the growth of P. nicotianae as complete (100%) inhibition observed in tested doses.


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Anonymous, 2020. Mission for Integrated Development of Horticulture. Horticulture Division Department of Agriculture & Cooperation Ministry of Agriculture Krishi Bhavan, New Delhi www.midh.gov.in.

Kumar, R. A., Vasu, K., Velayudhan, K. T., Ramacghnadran, V., Suseela Bhai, R. and Unnikrishanan, G. 2009. Translocation and distribution of p32 labelled potassium phosphonate in black pepper (Piper nigrum L). Crop Protection, 28(10): 878-881.

Barchietto, T., Saindrenan, P. and Bompeix, G. 1992. Physiological responses of Phytophthora citrophthora to a sub-inhibitory concentration of phosphonate. Pestic. Biochem. Physiol. 42:151-166.

Bompeix, G., Burgada, R. D’arcy-Lameta, A. and Soulie, M. C. 1989. Phosphonate-hydrogen exchange in aqueous solutions of 2H and 3Hlabelled phosphonic acid. Pesticide Sci. 25:171-174.

Cohen, Y. and Coffey, M. D. 1986. Systemic fungicides and the control of Oomycetes. Annu. Rev. Phytopathol. 24:311-338.

Daniel, R. and Guest G. 2006. Defence response induced by potassium phosphonate in Phytopthora palmivora challeged Arabidopsis thaliana. Physiol. Mol. Plant Pathol. 67(3-5):197-201.

Dunhill, R. H. 1990. The manufacture and properties of phosphonic (phosphorus) acid. Australasian. Plant Pathol., 19(4):138-139.

Fenn, M.E. and Coffey M.D. 1984. Studies on the in vitro and in vivo antifungal activity of fosetyl-Al and phosphorous acid. Phytopathology. 74: 606–611.

Fenn, M.E. and Coffey M.D. 1987. Phosphonate fungicides for control of diseases caused by Phytophthora. California Avocado Society. 71: 241-249.

Gade, R. M., Giri G. K. and Sangale U. R. 2005. Management of Phytophthora root rot in citrus nursery. Pesticide Res. J. 17(1): 28-29.

Gomez, K. A. and Gomez, A. A. 1984. Statistical Procedures for Agricultural Research, 2nd Edn. John Wiley and Sons, New York, NY, USA.

Grant, B. R., Dunstan R.H., Griffith J. M. 1990. The mechanism of phosphonic (phosphorous) acid action in Phytophthora. Australasian Plant Pathology. 19:115–121.

Graham, J. H. 2011. Phosphite for control of Phytophthora diseases in citrus: Model for management of Phytophthora species on forest trees. New Zealand J Forestry Sci. 41:49-56.

Grimm, G. R. and Hutchison D. J. 1973. A procedure for evaluating resistance of citrus seedlings to Phytophthora parasitica. Plant Dis. Repprter. 57: 669-672.

Groussol, J., Delrot S., Caruhel P. and Bonneman J. L. 1986. Design of an improved exudation method for phloem sap collection and its use for the study of phloem mobility of pesticides. Physiologie Vegetale 24:123-133.

Guest, D. and Grant B. 1991. The complex action of phosphonates as antifungal agents. Bio. Rev. 66:159-187.

Hegde, G.M. and Mesta R.K. 2014. Cocophos (Potassium phosphonate) a new molecule to manage pod rot disease in cocoa. In: 35th Annual Conference and National Symposium on “Innovative and Ecofriendly Research Approach for Plant Disease Management”. 9-10 January 2014. Dr. PDKV, Akola, India,

Hegde, G.M. 2015. Bio-efficacy of potassium phosphonate against nut rot disease of areca nut (Areca catechu L.) in the northern Karnataka of India. Sri Lanka J Food Agri., 1(2): 9-14.

Jackson, T. J., Burgess T., Colquhoum I. and Hardy GES 2000. Action of the fungicide’s phosphate on Eucalyptus marginata inoculated with Phytopthora cinnamomi. Aust. Plant Pathol., 49(1):147-154.

Jagtap, G.P., Dhavale M.C. and Dey U. 2012. Symptomatology, survey and surveillance of citrus gummosis disease caused by Phytophthora spp. Sci. J Agric. 1(1): 14-20.

Kaur, A., Verma K. S. and Thind S. K. 2009. Evaluation of fungicides against foot rot (Phytopthora parasitica). Plant Dis. Res. 24(1): 19-22.

Lokesh, M. S., Patil S. V., Gurumurthy S. B., Palakshappa M. G., Anandaraj M. 2012. Evaluation of combination of potassium phosphonate and Trichoderma harzianum on management of Phytophthora foot rot of black pepper (Piper nigrum L.) under arecanut cropping system. Int. J Plant Protec. 5 (2): 356-360.

Le Roux, H. F. 2000. Physiological interactions of phosphorus acid and control of root pathogens. Proceedings of the International Citriculture IX Congress, Vol. II, (pp. 926-928). Lake Alfred, FL, USA: International Society of Citriculture.

Menge, J. A. 1993. Improved root rot control with mulches. Calif. Citrog. 79 (1):16-17.

Naqvi, SAMH 2000. Managing Phytophthora disease of citrus. Indian Hort. 44: 5-9.

Naqvi, S.A.M.H. 2003. Phytophthora disease of citrus and management strategies. Ann. Rev. Plant Pathol. 2: 239-270.

Niere, J. O., DeAngelis G. and Grant B. R. 1994. The effect of phosphonate on the acid soluble phosphorous components in the genus Phytophthora. Microbiology 140:1661-1670.

Nishantha, K.M.D.W.P., Bhosale B.B., Kadam D.R., Patange N.R. 2009. Comparison of new insecticide molecule, E2Y45 with microbial agents and other insecticides on parasitoids and predators and its phytotoxicity to pigeon pea. J Plant Prot. Envi. 6(2):111–116.

Nene, Y. L. and Thapliyal P. N. 1993. Fungicides in Plant Disease Control. Second Edition Oxford & IBH Publishing, New Delhi.pp.531-532.

Ouimette, D. G. and Coffey M. D. 1990. Symplastic entry and phloem translocation of phosphonate. Pesti. Biochem. Physiol. 38(1):18-25.

Pilbeam, R. A., Colquhoum I., Shearer B. and Hardy GES 2000. Phosphite concentration: its effect on phytotoxicity symptoms and colonization by Phytopthora cinnamomi in three understory species of Eucalyptus marginata forest. Aust. Plant Pathol., 29(2):86-95.

Saindrenan, P. Darakis G. and Bompeix G. 1985. Determination of ethyl phosphate, phosphate and phosphate in plant tissues by anion exchange HPLC and GC. J Chromatog., 347:267-273.

Schroetter, S., Angeles-Wedler D., Kreuzig R., and Schnug E. 2006. Effects of phosphite on phosphorus supply and growth of corn (Zea mays). Landbauforschung Volkenrode 56:87-99.

Singh, R., Dalal R. P. S. and Bhatia S. K. 2015. Management of citrus foot rot/gummosis through integration of agronomic practices, bio-agent and chemicals. Ind. J Plant Protec. 43(3):350-353.

Timmer, L. W., Garnsey S. M. and Graham J. M. 2000. Compendium of Citrus Diseases. APS Press, St. Paul. Minnesota. USA.

Thind, S. K., Thind T. S. and Arora J. K. 2004. Prevalence of citrus Phytophthora in kinnow mandarin and its fungicidal management. Plant Dis. Res. 19: 31-35.

Truong, N. V., Burgess L. W. and Liew E. C. Y. 2012. Greenhouse and field evaluations of potassium phosphonate: the control of Phytophthora foot rot of black pepper in Vietnam. Arch. Phytopathol. Plant Protec. 45(6):724-739.

Vincent, J. M. 1927. Distortation of fungal hyphae in presence of certain inhibitors. Nature 15:850.

Westwood, M. N. 1993. Temperate Zone Pomology: Physiology and Culture. 3rd Edition, Tiber Press, Portland, Oregon. 523 pp.

Wong, M. H. 2004. Root infusion of phosphorous acid for the control of Phytopthora foot rot in black pepper (Piper nigrum L.). In: Diversity and management of Phytopthora in Southeast Asia; Drenth, A. and Guest D. I., (Eds.)Canberra, Australian Center for International Agricultural Research, p171-173.






Original Research Papers

How to Cite

Ingle, Y. V., Paithankar, D. H., Sadawarte, A. K., & Bhonde, S. R. (2020). Evaluation of potassium salt of phosphonic acid in Nagpur mandarin with special reference to Phytophthora management. Journal of Horticultural Sciences, 15(2), 153-160. https://doi.org/10.24154/jhs.v15i2.943

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