International Journal of Plant Protection

Open Access Open Access  Restricted Access Subscription Access
Open Access Open Access Open Access  Restricted Access Restricted Access Subscription Access

In vitro efficacy of Different Fungicides against Alternaria macrospora Causing Leaf Blight of Cotton


Affiliations
1 Department of Plant Pathology, College of Agriculture, University of Agricultural Sciences, Dharwad (Karnataka), India
     

   Subscribe/Renew Journal


A total of sixteen fungicides which included six systemic, five non systemic and five combi products which differed significantly with respect to fungicides concentrations and their interactions were evaluated for their efficacy against Alternaria macrospora by poisoned food technique. Among the six systemic fungicides evaluated against A. macrospora, hexaconazole and propiconazole recorded the cent per cent inhibition of mycelial growth at all the concentrations (0.05 %, 0.1 % and 0.15 %) and least inhibition of mycelial growth was recorded by carbendazim (26.01 %). Out of five non systemic fungicides evaluated, mancozeb recorded the maximum inhibition of 95.29 per cent followed by captan 92.68 per cent and copper oxy chloride recorded the minimum inhibition of 68.7 per cent. Among five combi fungicides evaluated in vitro(tebuconazole 50 % + trifloxystrobin 25 %) recorded the complete inhibition (100 %) at all concentrations (0.1 %, 0.2 % and 0.3 %) and least inhibition of mycelial growth 86.01 per cent was recorded by (captan 70 % + hexaconazole 5 %).

Keywords

In vitro Evaluation, Systemic, Non Systemic, Combi Product Fungicides, Alternaria macrospora.
Subscription Login to verify subscription
User
Notifications
Font Size


  • Anonymous (2019). Annual Report (2018-19), All India Coordinated Cotton Improvement Project, Coimbatore, India, pp. 1-5.

  • Arun Kumar, G.S. (2008).Studies on leaf blight of chrysanthemum caused by Alternaria alternata(Fr.) Keissler. M.Sc. (Agri.) Thesis, University of Agricultural Science, Dharwad, Karnataka (India).

  • Chattannavar, S.N., Sharmila, A.S., Patil, S.B. and Khadi, B.M. (2004).Reaction of Btcotton genotypes to foliar diseases. In: Symp. Strat. Sust. Cotton Prod. - A Global Vis. 3, Crop Prod. UAS, Dharwad, November 23-25. pp.353-354.

  • Hariprasad, K., Nagaraja, A., Suresh Patil and Gururaj Hawaldar (2017). In vitroefficacy of fungicides against Alternaria tenuissimacausing leaf blight of Kodo millet. Internat. Curr. Microbiol. App. Sci., 6(9): 949-954.

  • Mesta, R.K. (2006).Epidemiology and management of Alternariablight of sunflower caused by Alternaria helianthi (Hansf.) Tubaki and Nishihara. Ph.D. Thesis, University of Agricultural Science, Dharwad, Karnataka (India).

  • Monga, D., Bhattiprolu, S.L. and Prakash, A.H. (2013).Crop losses due to important cotton diseases. Tech. Bull. 9. Central Institute for Cotton Research, Nagpur (Maharashtra state).

  • Vincent, J.M. (1947).Distortion of fungal hyphae in presence of certain inhibitors. Nature,159 : 239-241.


Abstract Views: 653

PDF Views: 0




  • In vitro efficacy of Different Fungicides against Alternaria macrospora Causing Leaf Blight of Cotton

Abstract Views: 653  |  PDF Views: 0

Authors

Somashekhar Nagappa Meti
Department of Plant Pathology, College of Agriculture, University of Agricultural Sciences, Dharwad (Karnataka), India
V. R. Kulkarni
Department of Plant Pathology, College of Agriculture, University of Agricultural Sciences, Dharwad (Karnataka), India

Abstract


A total of sixteen fungicides which included six systemic, five non systemic and five combi products which differed significantly with respect to fungicides concentrations and their interactions were evaluated for their efficacy against Alternaria macrospora by poisoned food technique. Among the six systemic fungicides evaluated against A. macrospora, hexaconazole and propiconazole recorded the cent per cent inhibition of mycelial growth at all the concentrations (0.05 %, 0.1 % and 0.15 %) and least inhibition of mycelial growth was recorded by carbendazim (26.01 %). Out of five non systemic fungicides evaluated, mancozeb recorded the maximum inhibition of 95.29 per cent followed by captan 92.68 per cent and copper oxy chloride recorded the minimum inhibition of 68.7 per cent. Among five combi fungicides evaluated in vitro(tebuconazole 50 % + trifloxystrobin 25 %) recorded the complete inhibition (100 %) at all concentrations (0.1 %, 0.2 % and 0.3 %) and least inhibition of mycelial growth 86.01 per cent was recorded by (captan 70 % + hexaconazole 5 %).

Keywords


In vitro Evaluation, Systemic, Non Systemic, Combi Product Fungicides, Alternaria macrospora.

References