Vol. 3 (2) : March-April 2012 issue
Green Farming Vol. 3 (2) : 235-237 (March-April, 2012)
Efficacy of SAR inducing chemicals against early blight of tomato incited by Alternaria solani
R.A. KARANDE1, M.S. JOSHI2, J.J. KADAM3, S.C. RITE4*, S.V. MAGAR5 and A.V. SAWANT6
Deptt. of Plant Pathology, College of Agriculture, Dr. B.S.K. Krishi Vidyapeeth, Dapoli - 415 712 Dist. Ratnagiri (M.S.)
Designation : 1,4,5,6Ph.D. Scholar *(shrikantrite@rediffmail.com), 2,3Asstt. Professor
Subject : Plant Pathology, Nematology and Virology, Mushroom Cultivation
Paper No. :
Total Pages : 3
Received : 02 December 2011
Revised accepted : 15 March 2012
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Citation :
R.A. KARANDE, M.S. JOSHI, J.J. KADAM, S.C. RITE, S.V. MAGAR and A.V. SAWANT. 2012. Efficacy of SAR inducing chemicals against early blight of tomato incited by Alternaria solani. Green Farming Vol. 3 (2) : 235-237 ; March-April, 2012
ABSTRACT
In the field experiments, after spraying of SAR inducing chemicals, it was observed that 30 DAT the maximum disease intensity was observed in the control (4.80 per cent). 45 days after transplanting again benzoic acid (0.1%) was found to be most effective in reducing the disease intensity (7.20 per cent) and 60 days after transplanting similar trend continued in treatments of benzoic acid (0.1%), salicylic acid (0.1%) and phosphoric acid (0.1%) which reduce disease incidence from 21.30 per cent (control) to 13.80 per cent, 15.80 per cent and 16.40 per cent respectively. Among all the treatments, the benzoic acid (0.1%) recorded maximum yield of 21.56 t/ha. The lowest yield of tomato crop was obtained in control 11.43 t/ha.
Key words :
Alternaria solani, benzoic acid, early blight, SAR chemicals, tomato.
