1QCC and ICL, Department of Agriculture, Abash, Paschim Midnapur-721102, West Bengal, India
2Department of Agricultural Chemicals, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741252, Nadia, West Bengal, India
3Department of Agricultural Chemistry and Soil science, Survey Selection and Mass Production, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741252, Nadia, West Bengal, India
4Department of Agricultural Chemistry and Soil Science, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741252, Nadia, West Bengal, India
*Corresponding author: sukantachakrabortty@rediffmail.com
Online published on 20 November, 2015.
An investigation was carried out to monitor the changes in total N in a waterlogged acid soil subjected to a drying phase at different growth stages (pre-tillering and pre-flowering) of the rice crop. Total N was estimated by the method of Bremner (1996). Results revealed that irrespective of cropping, drying at pre-blowering stage decreased the loss of total N in acid soil which is not treated with inorganic N. However, in presence of N-fertilizer, the decrease in the amount of total N increased in acid soil. The acid soils that are subjected to a drying phase at pre-flowering stage of rice crop decreased the total N content in cropped over the uncropped acid soil.
Drying at pre-flowering stage of rice crop is more effective in accumulation of total N in rhizophore acid soil than a drying phase at pre-tillering stage of waterlogged acid soil.
The order of increase in total N in acid soil subjected to drying phase at pre-flowering stage is of lower order in cropped over the uncropped acid soil
Acid soil, total N, drying phase, pre-tillering stage, pre-flowering stage, rice crop
