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Screening of Rose Varieties Against Japanese Beetle

ME Reza*
Entomology division, Bangladesh Sugarcrop Research Institute, Ishurdi, Pabna.Bangladesh,

NM Razib
Department of Entomology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh,

Abstract/ Executive Summary:

The study was conducted in the farm of Sher-e-Bangla Agricultural University, Dhaka during April to December 2011 for screening rose varieties against Japanese beetle incidence. The study 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. Incidence of Japanese beetle showed significant variation due to the effect of varieties. Among the varieties, Sweet Love showed the lowest abundance of Japanese Beetle (1.5/plant), the lowest number (0.2/plant) of infested leaves, infested branch (1.3/plant) and infested flower (1.1/plant) per plant.

Keywords: Rose, Popillia japonica, Incidence, Screening

Location: The farm of Sher-e-Bangla Agricultural University, Dhaka

Start Date: 00-04-2011

End Date: 00-12-2011

Program Area: Pest Management

Commodity: Rose, Beetle

Objectives:

The JB also damages fruit crops, soybeans, maize, and other gardener field crops (Fleming 1972). Both larvae and adults are targets for substantial insecticide usage, especially on home lawns, golf courses, and in urban landscapes.

Methodology:

The experiment was conducted at the farm of Sher-e-Bangla Agricultural University, Dhaka during the period from April to December 2011. The location of the site in 23.7740 N latitude and 90.3350 E longitudes with an elevation of 8.2 meter from sea level. The experimental site is situated in subtropical zone, characterized by heavy rainfall during the months from April to September (Kharif season) and scantly rainfall during the rest of the year (Robi season). The single factor experiment was laid out in Randomized Complete Block Design (RCBD) with 3 replications. Each block was divided into 12 plots, where treatments were allotted at random. Thus, there were 36 (12 × 3) unit plots altogether in the experiment. The size of each plot was 1m × 0.8m. The distance between blocks was 0.5m and 0.5m wide drains were made between the plots. The beds were dug deep during summer and kept open the soil due to exposed to sun. An appropriate amount of farmyard manure or cow dung manure along with 2 kg superphosphate were incorporated into the soil and bed leveled followed by watering/irrigation. Manuring and fertilization was done as per requirements. The rose was planted in pits of 60cm diameter and 60-75 cm depth at appropriate distances in a bed. The rose bushes were pruned once a year during second week of October. After about 6-7 weeks of pruning, the plants started flowering. The time off lowering was adjusted according to the date of pruning. The new or so-called “Maiden” plants were not pruned. Irrigation, drainage, Intercultural operation and gap filling was done as per requirements. Ten plants from each of the plots were selected randomly for recording data for different characters. The collected data were compiled and analyzed statistically using the analysis of variance (ANOVA) technique with the help of a computer package program MSTAT-C and the mean differences were compared by Least Significance Difference test.

Source of Information: Bangladesh J. Ecol. (2019) 1 (2) : 65-68

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the results of the present study, it can be concluded that the Sweet Love variety of rose had the lowest number of infested leaves per plant, infested branch per plant and lowest number of infested flowers per plant due to lower incidence of Japanese beetle among all varieties of rose. The variety Sweet Love might be graded as tolerant to Japanese beetle pests. The variety Sweet Doll showed the lowest performance regarding the incidence of Japanese beetle, the number of infected leaves, branches and flowers per plant of rose. The variety Sweet Doll might be graded as susceptible to Japanese beetle.

Knowledge Management: Journal