Effect of PLRV infected seed tuber on disease incidence, plant growth and yield parameters of potato

Abstract

An investigation was conducted to find out the effect of PLRV infected seed tubers on disease incidence, plant growth, and tuber yield of potato. The levels of PLRV infected seed tubers were 0, 10, 20, 33, and 100%. Presence of PLRV infected tubers at 20% and higher rate caused significant increase in disease incidence and reduction in plant height, stem number, tuber number, and tuber yield as compared to that in control. Incidence of PLRV in the experimental fields, reduction in plant height, stem number, tuber number, and tuber weight per hill was positively and linearly correlated with levels of their inoculum. Spraying of Nimbicidine against insect vector did not show significant influence on plant growth and tuber yield.

Keywords: Inoculum levels; disease incidence; PLRV; insecticide; growth and yield performance; potato.

DOI: 10.3329/bjar.v35i3.6441

Bangladesh J. Agril. Res.35(3) : 359-366