Influence of organic amendments and different levels of nitrogen on production potential, economics and energetics of rice (Oryza sativa)–wheat (Triticum aestivum) cropping system

PRABHJIT KAUR; K.S. SAINI; KIRANDEEP KAUR; THAKAR SINGH; S.S. WALIA

doi:10.59797/ija.v68i3.2801

Authors

PRABHJIT KAUR Punjab Agricultural University, Ludhiana, Punjab 141 004
K.S. SAINI Punjab Agricultural University, Ludhiana, Punjab 141 004
KIRANDEEP KAUR Punjab Agricultural University, Ludhiana, Punjab 141 004
THAKAR SINGH Punjab Agricultural University, Ludhiana, Punjab 141 004
S.S. WALIA Punjab Agricultural University, Ludhiana, Punjab 141 004

DOI:

https://doi.org/10.59797/ija.v68i3.2801

Keywords:

Economics, Nitrogen, Organic amendments, Residual effect, Rice, Wheat, Yield

Abstract

A field experiment was conducted during 2018–19 and 2019–20 at the Punjab Agricultural University, Ludhiana and Research Station, Dyal Bharang, Amritsar, to study the influence of organic amendments and nitrogen levels on rice (Oryza sativa L.)-wheat (Triticum aestivum L.) cropping system. In rice, main plot treatments were green manuring (GM), farmyard manure (FYM), poultry manure (PM) and control (NA). Nitrogen levels in sub-plots comprised control (N₁), 50 kg N/ha (N2),75 kg N/ha (N3) and 100 kg N/ha (N₄). In wheat, residual effect of organic amendments and nitrogen levels applied to preceding rice was evaluated. The statistically highest grain yield of rice was obtained with PM (8.29 t/ha), followed by GM (8.02 t/ha) which was at par with FYM (7.90 t/ha). The lowest rice grain yield was obtained with NA (5.16 t/ha) and its subsequent wheat crop recorded significantly higher grain yield with PM (6.14 t/ha), followed by FYM (5.88 t/ha) and GM (5.72 t/ha). Treatment N₄ recorded significantly higher yield than N₂ and was at par with N₃. Maximum rice-equivalent yield (14.7 t/ha) was recorded with PM, while the highest energy-use efficiency of rice was recorded with green-manure (16.2) as compared to the other treatments. Treatment with the application of PM and N₄ recorded significantly the highest economic parameters and system productivity for both rice and wheat crops compared to rest of the treatments.

Author Biographies

PRABHJIT KAUR, Punjab Agricultural University, Ludhiana, Punjab 141 004

Research Fellow (Ph.D. Scholar)
K.S. SAINI, Punjab Agricultural University, Ludhiana, Punjab 141 004

Principal Agronomist, Department of Agronomy
KIRANDEEP KAUR, Punjab Agricultural University, Ludhiana, Punjab 141 004

Agronomist
THAKAR SINGH, Punjab Agricultural University, Ludhiana, Punjab 141 004

Principal Agronomist, Department of Agronomy
S.S. WALIA, Punjab Agricultural University, Ludhiana, Punjab 141 004

Director- cum-Principal Agronomist, School of Organic Farming

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