Indian Journal of Agronomy
  • Year: 2016
  • Volume: 61
  • Issue: 3

Response of aerobic rice (Oryza sativa) to different irrigation regimes and nitrogen levels in western Odisha

  • Author:
  • B.R. Nayak1,, K. Pramanik2, C.M. Khanda3, N. Panigrahy4, P.K. Samant5, S. Mohapatra6, A.K. Mohanty7, A.K. Dash8, N. Panda9, S.K. Swain
  • Total Page Count: 5
  • Page Number: 321 to 325

1Junior Agronomist, AICRP on Water Management, RRTTS, Chiplima, Sambalpur, Odisha 768 025

2Assistant Professor (Agronomy), Palli Siksha Bhavana (Institute of Agriculture), Sriniketan, Visva-Bharati, West Bengal

3Associate Director of Research, College of Agriculture, OUAT, Bhubaneswar, Odisha

4Senior Scientist (Agriculture Engineer), College of Agriculture Engineering and Technology, Bhubaneswar, Odisha 751 003

5Senior Soil Scientist, AICRP on Water Management, RRTTS, Chiplima, Sambalpur, Odisha 768 025

6Senior Agronomist, AICRP on Water Management, RRTTS, Chiplima, Sambalpur, Odisha 768 025

7Associate Director of Research, AICRP on Water Management, RRTTS, Chiplima, Sambalpur, Odisha 768 025

8Professor (Soil Science), OUAT, Bhubaneswar, Odisha 751 003

9Assistant Professor (Soil Science), OUAT, Bhubaneswar, Odisha 751 003

Regional Research and Technology Transfer Station, Chiplima, Sambalpur, Odisha 768 025

*Corresponding author Email: biswa.nayak@yahoo.co.in

Online published on 6 May, 2017.

Abstract

A field experiment was conducted during the summer seasons of 2013 and 2014 at Chiplima, Odisha, to determine the effect of irrigation regimes and nitrogen (N) levels on yield, field water-use efficiency (FWUE) and economics of ‘APO’ cv. of aerobic rice (Oryza sativa L.). The treatments consisted of 4 irrigation regimes (irrigation at 3, 5, 7 and 9 days intervals) in the main-plots and 4 levels of nitrogen (0, 40, 60 and 80 kg N/ha) in the sub-plots, replicated thrice. The pooled mean results revealed that maximum grain yield (3.44 t/ha) and benefit: cost ratio (1.40) were obtained when irrigation was provided at 3-day interval. However, the both the parameters obtained with irrigation being provided at 5-day interval were at par with their maximum values. The field water-use efficiency was the maximum with irrigation at 7-day interval (36.01 kg/ha-cm) which was at par with irrigation at 5-day interval (34.48 kg/ha-cm). With regards to N level, application of 80kg N/ha recorded significantly higher grain yield (3.58 t/ha), FWUE (40.55 kg/ha-cm) and benefit: cost ratio (1.48) than that of other N levels. Thus, economically higher grain yield, FWUE and benefit: cost ratio were obtained when crop was irrigated at 5-day interval and fertilized with 80 kg N/ha.

Keywords

Aerobic rice, Economics, Field water use efficiency, Irrigation regimes, Nitrogen