Seasons of rice cultivation in Bangladesh
Three seasons viz. aus, anzan and boro are noticed with respect to rice cultivation.
a) Aus season: The word aus has been derived from the Sansicrit ashu meaning quick or early. The season designates the cultivation of the rice varieties which are planted in mid March-April and harvested in mid June-July. (The season is synonymous to kharif- I). Examples-Local aus varieties: Dular, Dharial, Hashikalmi, Morichbeti, Shaita, Panbira High yielding cuts varieties: Nizami (BR 20), Niamot (BR 21), Rahmat (BR 24), Shraboni (BR 26)
b) Aman season: The word aman has been derived from Arabic meaning safety which indicates stability of the crop. The season designates the cultivation of the rice varieties which are planted in mid July and harvested in mid November-December. (The season is synonymous to kharif -II). Examples-Local aman varieties: Latishail, Nizershail, Jhingashail, Pajam, Rajashail. High yielding anzan varieties: Brrishail, Binashail, Dulabhog (BR 5), Kiron (BR 22), Dishari (BR 23).
c) Boro season: Boro rice refers to the crop grown in submerged land lower in elevation. The season designates the cultivation of the rice varieties which are planted in November-December and harvested in March-April. (The season is synonymous to rabi). Examples-Local boro varieties: Tepi boro, Khoya boro. High yielding and modern boro varieties: BR 17 (Hashi), BR 18 (Shahjalal), BR 19 (Mongal), BRRI dhan28, BRRI dhan29.
d) Special season of rice: B. anzan season/Broadcast aman season/Floating rice season: The season designates the cultivation of the rice varieties which are planted in March-April and harvested in November-December. Rice varieties of this season are Katia bagdar (Habiganj anm-I), Godalaki (Habiganj anzan-2), Dudhlaki (Habiganj a/Ilan-4). This seasonal classification is not a universal one. It only indicates the period of the year when a particular crop has been grown.