International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 2
First page : (794) Last page : (800)
Article doi: http://dx.doi.org/10.18782/2320-7051.2830
Effect of Meteorological Factors on Potato Early Blight Development and Infection Rates under Different Fungicidal Spray
Ajay Kumar1*, S. P. Pathak1, Narendar Kumar2, Mahesh Singh3 and Dharmendra Kumar1
1Department of Plant Pathology, Narendra Deva University of Agriculture & Technology,
Kumarganj, Faizabad-224 229, UP, India
2Department of Plant Pathology, C.S.A.U.A. & T., Kanpur- 208002, UP, India
3School of Agriculture, I. T. M. University, Gwalior-475001, MP, India
*Corresponding Author E-mail: ajkumar87@rediffmail.com
Received: 11.04.2017 | Revised: 23.04.2017 | Accepted: 24.04.2017
ABSTRACT
A field investigation entitled “Effect of effect meteorological factors on early blight development and infection rates under different fungicidal spray” was conducted during rabi season 2012-2014on spray schedules of different fungicides for the management of early blight of potato, cultivars Kufri Bahar was sown on dated 18th November, with three replications and ten treatments in RBD design along with recommended package and practices during 2012-14 at Vegetable Farm of Narendra Deva University of Agriculture & Technology, Kumarganj, Faizabad. Maximum disease severity and AUDPC was recorded in untreated plot. The early blight disease had significant negative correlation with maximum relative humidity during 2012-13 and in year 2013-14 minimum temperature was significantly correlated. Mean infection rates showed positive but non-significant correlation with maximum and minimum temperature. The severity of early blight showed positive but non-significant correlation with maximum temperatures and sunshine hours in 2012-13 in all treatments while, it showed significant positive correlation with maximum temperature and highly significant positive correlations with sun shine hours in year 2013-14 in all treatments.
Key words:Early blight, Alternaria solani, Infection rate, Meteorological factor and Fungicides.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Kumar, A., Pathak, S. P., Kumar, N., Singh, M. and Kumar, D., Effect of Meteorological Factors on Potato Early Blight Development and Infection Rates under Different Fungicidal Spray, Int. J. Pure App. Biosci.5(2): 794-800 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2830
