PARTIAL SUBSTITUTION OF NITROGEN THROUGH COMBINED APPLICATION OF BIOFERTILIZERS IN RICE

G.GOPALASWAMY and S.ANTHONI RAJ

doi:https://doi.org/10.29321/MAJ.10.A00841

Madras Agricultural Journal

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PARTIAL SUBSTITUTION OF NITROGEN THROUGH COMBINED APPLICATION OF BIOFERTILIZERS IN RICE

Author: G.GOPALASWAMY and S.ANTHONI RAJ,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 84, Issue: feb-feb,

DOI:https://doi.org/10.29321/MAJ.10.A00841

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Abstract

The individual and combined effect of Azolla and Azospirillum on rice was investigated both in the presence and absence of inorganic nitrogen for two seasons. At O kg N/ha level, application of Azolla or Azospirillum alone augmented the grain yield by 21 and 19 per cent respectively. However, combined application of Azospirillum and Azolla with 50 and 75 kg N levels increased the grain yield. At 100 kg N/ha, the response was relatively low.

Keywords: Biofertilizers, Azolla, Azospirillum, rice

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