Indian Journal of Agricultural Research

  • Chief EditorV. Geethalakshmi

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Indian Journal of Agricultural Research, volume 47 issue 5 (october 2013) : 419-424

EFFECT OF INTEGRATED USE OF CHEMICAL FERTILIZER AND BIOINOCULENTS ON GROWTH, NITRATE ASSIMILATION AND YIELD OF RICE (ORYZA SATIVA L.)

Mihir Lal Roy1, Ramesh C. Srivastava*
1Plant Physiology and Biochemistry Research Laboratory, Department of Botany, Tripura University, Suryamaninagar-799 022, India

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Cite article:- Roy1 Lal Mihir, Srivastava* C. Ramesh (2024). EFFECT OF INTEGRATED USE OF CHEMICAL FERTILIZER AND BIOINOCULENTS ON GROWTH, NITRATE ASSIMILATION AND YIELD OF RICE (ORYZA SATIVA L.). Indian Journal of Agricultural Research. 47(5): 419-424. doi: .

ABSTRACT

Field trial was conducted during boro season (December – March) in last two consecutive years in the farmer’s field of West Tripura District to study the effect of integrated use of chemical fertilizers(NPK) at different levels and bioinoculants (Azospirillum brasilense and Azotobacter chroococcum) on growth, nitrate assimilation [viz., in vivo nitrate reductase (NR) activity], soluble protein and yield of Oryza sativa L. The results showed that on integrated use with bioinculants, the chemical fertilizer (urea-N) instead of 100% recommended dose (80 Kg N ha-1), 75% recommended dose (60 Kg N ha-1) gave better result. This indicated potentiality of integrated use of chemical fertilizer and bioinoculants (Azospirillum brasilense and Azotobacter chroococcum) and it can save 20 Kg N ha-1. Further, in field conditions, Azospirillum brasilense was found more effective than Azotobacter chroococcum.

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