ABSTRACT
An experiment was carried out at the Soil Science Field Laboratory of Bangladesh Agricultural University (BAU), Mymensingh during the Aman season to determine the nitrogen requirement of two aromatic rice varieties (Kalizira, and Chinisagar). There were five N levels, viz. N0 (0 kg ha-1), N20 (20 kg ha-1), N40 (40 kg ha-1), N60 (60 kg ha-1) and N80 (80 kg ha-1). Application of N significantly increased the harvest components, grain harvest, and straw harvest of both rice varieties. Both grain harvest and straw harvest of Chinisagar variety were higher than that of Kalizira. There was no significant difference between the two rice varieties for N concentration in grain and straw. The variety Chinisagar showed statistically higher total N uptake compared to the Kalizira variety. The grain harvest of both varieties without any N application was 1.8 t ha-1 and the application of 60 kg N ha-1 recorded the highest harvests of 3.1 and 3.2 t ha-1 in Kalizira and Chinisagar, respectively. For both varieties, the grain harvest increased progressively with an increase in N application up to 60 kg N ha-1 and thereafter decreased at the higher dose of N i.e. 80 kg N ha-1. The grain harvests due to 40 kg N ha-1 may be optimum for both varieties.
Keywords: Aromatic rice, Nitrogen doses, Varieties, Effectiveness, and Bangladesh’s soils.
Citation: Alam MM, Imran MAS, Bhajan SK, Hany U, Morshed MM, and Mizan MM. (2022). Performance of aromatic rice varieties as influenced by nitrogen doses. Int. J. Agric. Vet. Sci., 4(4), 68-74.
https://doi.org/10.34104/ijavs.022.068074
