Response of rice to azolla inoculation and fertilizer nitrogen
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Date
1992
Journal Title
Journal ISSN
Volume Title
Publisher
Kerala Agricultural University
Abstract
Field experiments were conducted to study the effect of fertilizer nitrogen and
azolla on yield of rice in Tamil Nadu Agricultural University wetland farm, Coimbatore.
Experiments were laid out in a randomised block design with four replications during kharif
and rabi, 1984-85. Azolla as dual crop, green manure, different forms of urea like prilled
urea (PU), urea super-granules (USG) and neem coated urea (NCU) and their combinations
were tried. Azolla biomass production was more in rabi season than kharif. All the forms
of urea applied at 75 kg N/ha with and without azolla produced more yield than the control.
Plots treated with 25 kg N each as PU, USG and NCU besides azolla as dual crop in kharif
and 75 kg N as NCU and azolla as dual crop in rabi recorded the highest grain yield. Dry
matter production had the maximum direct effect on grain yield in both the seasons.
Description
Keywords
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Citation
Agricultural Research Journal of Kerala, 30(1), 21-27.