International Journal of Current Microbiology and Applied Sciences

ISSN: 2319-7706 Volume 2 Number 9 (2013) pp. 125-132

ISSN: 2319-7706 Volume 2 Number 9 (2013) pp. 125-132

S.H.Peerzada, A.G.Najar, Mushtaq Ahmad, G.H.Dar and K.A.Bhat*

Division of Plant Pathology, Sher-e-Kashmir, University of Agricultural Sciences and Technology of Kashmir, J & K, India -191121 *Corresponding author e-mail: khurshid_agri@yahoo.com

ABSTRACT

Irrigation frequencies have marked effects on the incidence, intensity and yield of the potato crop. Higher disease incidence (83.99 and 87.77%) and intensity (46.11 and 65.04%) with higher AUDPC values of 120.42 and 144.07 and minimum tuber yield (115.34 and 122.38 qts/ha) were realized with more frequent irrigations. The disease can be greatly reduced if soil water status is maintained at relatively steady conditions. The least disease incidence (58.66 and 67.99%) disease intensity (30.50 and 48.02%), lower AUDPC values (91.64 and 115.42) and maximum yield were obtained in 21- days irrigation frequency, during 2007 and 2008 cropping season

Keywords

Irrigation frequency; Potato late blight; Phytophthora infestans; Soil water.