Management Practices for Whitefly and Thrips in Mungbean

Abstract

This experiment was conducted at the central farm of Sher-e-Bangla Agricultural University, [23.740 N latitude and 90.350 E longitude] Sher-e-Bangla Nagar, Dhaka, Bangladesh, during the period of March to May, 2014 to study the Whitefly and Thrips pest incidence in mungbean and their management practices BARI Mung-5 was used as the test crop for this experiment. The experiment consists of the following treatments: T1: Nitro 505EC (Chloropyrifos+Cypermethrin) @ 2 ml/L of water at 10 days interval; T2: Casper 5 SG (Emamectin Benzoate) @ 2gm/L; T3: Voliam Flexi (Thiamethoxam+Chlorantraniliprole) @ 0.25 ml/L; T4: Tapnor 40 EC (Dimethoate) @ 2.0 ml/L; T5: Allion 2.5 EC (Lamda-Cyhalothrin) @; T6: Admire 200SL (Imidachorpid) @ 0.25 ml/Land T7: Control. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The lowest number of whitefly infestation per plant in the vegetative stage (4.18) and reproductive stage (2.13) was recorded from T6 treatment, whereas the highest (14.44) and (8.10) was recorded from T7 treatment in respective stage. Thrips infestation was higher (6.32) per 5 flower was recorded from T7 treatment whereas lower infestation (1.88) per 10 flower was recorded from T6. The lowest yield per hectare (1.27 ton) was found in T7 and lowest benefit cost ratio (4.16) was found in T5 whereas highest yield per hectare (1.53 ton) was found in T6 and highest benefit cost ratio (12.81) was found in T3 treatment. Among the management practices for controlling whitefly and thrips of mungbean Admire 200SL @ 0.25 ml/L of water was more effective which was followed by Voliam Flexi (Thiamethoxam+Chlorantraniliprole) @ 0.25 ml/L of water Farmers should use Admire 200SL(Imidachorpid) @ 0.25 ml/L of water at 10 days interval for controlling whitefly and thrips in mungbean.

Efficacy of bio-rational insecticide for eco-friendly management of pod borer of mung bean

“…The lowest marginal benefit cost ratio (1.60) was obtained from the mechanical control plot. Alam et al (2021) found that the highest benefit cost ratio (12.81) with Voliam Flexi (Thiamethoxam+Chlorantraniliprole) @ 0.25 ml/L of water at 10 days interval and the lowest (4.16) with Allion 2.5 EC (Lamda-Cyhalothrin) @ 2.0 ml/L of water at 10 days interval. The highest BCR found in the treatment Voliam Flexi, may be due to the minimum pest infestation to the other treatment components and the better yield of this treatment.…”

“…However, production of the crop per unit area is very low (931 kg/ha) as compared to other countries of the world (BBS, 2021). It ranks fifth both in acreage and production and contributes 6.5% of the total pulse production in Bangladesh (Alam et al, 2021).…”

Nts on the Incidence and Damage of Flea Beetle (Phyllotreta Nigripes) and Thrips (Megalurothrips Usitatus) on Mungbean

“…Flea beetles (Phyllotreta nigripes) attack cotyledons and leaves of seedlings and young plants and feed on them by making innumerable round holes. The percentage of leaf area damaged by flea beetle on BARI Mung-6 is 11.33% (Islam et al, 2021). Older infested leaves dry up, hampering the plant's growth having reduced number of pods (Hossain, 2015).…”

“…Several investigators (Litsinger et al, 1988;Singh and Singh, 1977;Hossain, 2015;Alam et al, 2021) studied insect control by chemical insecticides against mungbean pests. Ahmad et al (1998) found that the application of dimethoate (0.03%) or monocrotophos (0.04%) at 45 and 60 days after sowing effectively reduced the insect pest complex of mungbean.…”

Occurrence and Diversity of Insect Pests Attacking BU Mung Bean4

“…It is considered as a quality pulse in the country but production per unit area is very low (931 kg/ha) as compared to other countries of the world (BBS, 2021). It ranks fifth both in acreage and production and contributes 6.5% of the total pulse production in Bangladesh (Alam et al, 2021).…”