• Effectiveness of different plant parts (Bio-pesticides) on preservation of wheat seed (Triticum aestivum L.)

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  • 01/04/2016

Sazeda Akter conducted this BSc thesis at the Department of Botany at the University of Rajshahi, Bangladesh.


In Bangladesh total loss due to poor post-harvest processing and preservation of agricultural products represents a tremendous loss to the economy. There is an urgent need introduce proper storage and processing. A main aim during storage is to minimize the growth of micro-organisms during the storage period, promoting longer shelf life and reducing health hazards. The objective of this research was to identify the most suitable bio-pesticide for the preservation of wheat seeds from a range of locally available options. This experiment was conducted at farms participating in SAF-BIN project in three villages of Paba (Rajshahi district) from June to  November 2013. Wheat variety BARI Gom 27 was used. Wheat seed was stored with 12% moisture content and treated before storage in jute bags (properly prepared beforehand) with three bio-pesticides: dry neem leaf (Azadirachta indica) (T1), dry mahogany fruit (T2) and dry neem seed (Azadirachta indica) (T3). Treatments were arranged in a completely randomized design (CRD) with three replications. Data on moisture content (after 156 days of storage), disease infestation/100 seeds, and germination was collected. Moisture data was collected. The highest moisture (14.9 %) was recorded in seeds stored with dry mahogany fruit statistically identical with seed stored with dry neem leaf (14.85%) and lowest in seed stored with dry neem seed (13.6 %). The highest percentage of infected seed was recorded in dry neem leaf (2.03 %) treated seed followed by dry neem seed (1.02 %) treated seed and lowest in dry mahogany fruit (0.23 %) treated seed. The highest percentage of seed germination was recorded in dry mahogany fruit (89.73 %) treated seed followed by dry neem seed (86.06 %) treated seed and the lowest in dry Neem leaf (85.0 %) treated seed. These results indicate that dry mahogany fruit was the best bio-pesticide for preserving wheat seed during storage and can be recommended to farmers in the area as useful indigenous method of seed protection.