Naznin Nahar

Bangladesh Agricultural University | BAU · Department of Entomology

Eggplant shoot and fruit borer, Leucinodes orbonalis, is a major pest in eggplant production in South and South-East Asia. Farmers frequently spray insecticides to control it. Integrated pest management (IPM) based on mass trapping or pheromone trapping and sanitation (removal of infested shoots and fruits) has been suggested but poorly adopted. Th...

Bacterial wilt (causal agent: Ralstonia solanacearum) and Phomopsis fruit rot (causal agent: Phomopsis vexans) are two major diseases constraining eggplant production in Bangladesh. No integrated management options to manage both diseases together are currently available; farmers spray pesticides. A 2-year participatory study was conducted to compa...

In the present study, effect of some new generation and conventional insecticides were compared to find out an effective insecticidal treatment(s) against brinjal shoot and fruit borer (BSFB) with least effect on ladybird beetle. The study was conducted in a randomized complete block design with seven insecticidal treatments (Cypermethrin 0.5ml L-1...

Eggplant seedling production in homestead nurseries of farmers in Jamalpur (Bangladesh) is greatly compromised by damping-off. Therefore, farmers often do not have enough seedlings to transplant. Effective treatments of soil and seed to reduce disease pressure in the nurseries are available but little is known on the relative contributions of soil-...

Pesticides may be one of causes of recent decline of honey bees (Apis mellifera). They may affect the orientation and ability of bees to return to the hive. We investigated the effect of sub-lethal doses of imidacloprid and fipronil on behavior and homing ability of bees. Foragers were injected with different concentrations of insecticides to deter...

Effects of cyperin 10 EC and neem extract on pollinators, fruit setting and fruit quality of mango was investigated. Number of pollinators visited mango inflorescences was higher in morning in comparison to noon and afternoon. In control plants, average 25.67 pollinators visited within 30 minutes which was higher than cyperin 10 EC (20.00) and neem...

An experiment was conducted to observe the incidence of brinjal shoot and fruit borer, Leucinodes orbonalis Guen. and to estimate their damages in five different brinjal varieties (viz. Laffa, Dohazari, Uttara, Islampuri and Amjuri) in the Plant Pathology Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from Januar...

Experiments were conducted in the laboratory to study the effects of garlic clove, neem and eucalyptus leaf extracts on mating behaviour, oviposition and adult emergence of pulse beetle, Callosobruchus maculatus. Intensity of seed damage and weight loss of gram seeds were also recorded. The results showed that the mating frequency, mating duration,...