STUDY ON THE INCIDENCE OF THE INSECTAND MITE PESTS ON DIFFERENT VARIETIES OF ROSES

Abstract

The study was conducted at the farm of Sher-e-Bangla Agricultural University, Dhaka during the period from April to December 2011 to determine the incidence of the insect and mite pests on different varieties of roses. The experiment included twelve varieties of roses viz. Wild rose, Crazy love bi-color, Yellow star, Missing love, Compassion, Charming lady, Dream bangle, Sleepy moon, Sweet doll, Moon light, Sweet love and Mini moni. Each variety represents as one treatment. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Incidence of pest viz. aphid, mite, whitefly and Japanese beetle showed significant variation due to the effect of varieties. Among the varieties, Sweet Love was tolerant of pests and the minimum number of aphid; number of mite, number of whitefly and number of Japanese beetle were recorded at vegetative and flowering stages. Varieties of rose significantly influenced the incidence of pests as well as growth characteristics of rose indicating minimum number of infested leaves per plant, minimum number of infested branch per plant and minimum number of infested flower per plant on Sweet Love variety. Sweet Love variety showed tolerant to pest of rose and gave better yield among the all varietal treatments while sweet doll variety graded as susceptible due to the lowest performance regarding pest incidence and infestation.