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Maize (zea mays) is the most important cereal crop after rice in Bangladesh. During storage, maize grains are severely destroyed by insect pests. Most of the farmers of Bangladesh do not know how to preserve corn seed properly due to insufficient knowledge of storage pest of maize. An experiment was conducted to assess the major pests associated with stored maize, the damage and losses they cause in Bangladesh during July to December 2017. Sixty (60) farmer's farms from fifteen major maize growing districts of Bangladesh were assessed. Sixteen Arthropods, Fifteen Coleopterans, Five Lepidopterans and one Acarina were documented from the collected samples. Maize weevil (Sitophilus zeamais) followed by maize grain moth (Sitotroga cereallela), rice weevil (Sitophilus oryzae), flour beetle (Tribolium confusum) and Areca nut weevil (A. fasciculatus) were the major pests of stored maize in the study area. Among them, Maize weevil (S. zeamais) is the dominant, destructive and most important pest of maize in Bangladesh. This pest was found in abundance in all areas assessed damaging maize grain. Quantitative average grain damage of 75.85% and losses of 51 to 85% are common in the store within five to six months after storage. An integrated weevil management method should be implemented to prevent the high quantitative and qualitative grain losses incurred to contribute towards family food security in Bangladesh.

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The experiment was conducted at Shibganj upazila under Bogra district during October, 2014 to January, 2015 to observe the effect of planting dates on the yield of mustard seed. There were five planting dates viz. 25 October, 30 October, 05 November, 10 November and 15 November. Significant variations due to different planting dates were observed in plant height, number of leaves plant-1, number of siliqua plant-1, number of seed siliqua-1, 1000 weight plot-1, yield plot-1and yield ha-1of mustard. Results showed that the highest seed yield was1.50 t ha-1 obtained from 30 October. The lowest seed yield was 1.0 t ha-1 from 15 November. From the results, the best planting date of mustard is on 30 October in the northern parts of Bangladesh.  Int J Appl Sci Biotechnol, Vol 3(4): 651-654

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The effectiveness of 17 indigenous plant powders as grain protectant were assessed against Callosobruchus chinensis (L.). The results indicated that among all the tested plant materials, tobacco leaf powder (TLP) had promising effects on inhibiting oviposition and reducing adult emergence, seed infestation, and weight loss by C. chinensis. Tobacco leaf powder offered complete protection of chickpea seeds applied at 20.0 g/kg seeds. Its lower doses exhibited efficacy in dose dependant manner. The lowest number of eggs (24.60), egg bearing seeds (23.40), adult emergence (23.20), seed infestation (8.28%), and weight loss (0.50%) were obtained from the TLP treated at 10.0 g/kg seeds, while the highest of these parameters were in untreated control. In the ovicidal test, TLP showed 100% inhibition at 20.0 g/kg seeds over control. The lowest number of adults (37.20) were emerged when larvae bearing seeds were treated with TLP at 20.0 g/kg seeds along with 59.39% retardation over the control and had no adverse effect on seed germination up to 3 months. DOI: http://dx.doi.org/10.3329/bjar.v39i1.20146 Bangladesh J. Agril. Res. 39(1): 93-103, March 2014

The field experiment was conducted with twenty brinjal varieties/lines during October 2007 to May 2008 to identify shoot and leaf characteristics of brinjal plants for their susceptibility/resistance against brinjal shoot and fruit borer infestation. Borer infestation was influenced by different characters of plant shoot and leaf. Various parameters like plant height, stem diameter, number of branches and leaves plant -1 , third leaf length and width were recorded from different varieties used. The shoot infestation rate was found positively correlated with plant height (0.407), stem diameter (0.520), number of branches plant -1 (0.255), number of leaves plant -1 (0.478), third leaf length (0.373) and third leaf width (0.536). Considering all the recorded parameters, the infestation was found minimum on the variety katabegun WS (1.65%) followed by Marich begun S (1.74%).