Authors
Info
T. Varatharajan1,
A.K. Choudhary1*, V.
Pooniya1,
A. Dass1, M.C. Meena2,
B. Gurung3 and M.N.
Harish1
1Division of
Agronomy,
ICAR?Indian Agricultural Research
Institute, New Delhi-110 012, India
2Division of Soil
Science and
Agricultural Chemistry, ICAR-
Indian Agricultural Research
Institute, New Delhi-110 012, India
3Division of
Statistical Genetics,
ICAR-Indian Agricultural
Statistics Research Institute,
New Delhi-110 012, India
*Corresponding
Author Email :
anilhpau2010@gmail.com
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Abstract
Aim: The aim of the
present study was to assess the influence of different integrated crop
management (ICM) practices on productivity, resource-use efficiency and
energetics of pigeonpea crop so as to overcome various production- and
climatic-vulnerabilities in Indo-Gangetic Plains Region (IGPR).
Methodology: A study was
conducted during Kharif 2017 in pigeonpea under pigeonpea?wheat
cropping system at IARI, New Delhi, India to assess the influence of nine
different ICM modules [Conventional tillage (CT) based: 04 (ICM1?ICM4);
Conservation agriculture (CA) based: 04 (ICM5?ICM8);
Organic agriculture based: 01 (ICM9)] on productivity, PAR
interception, resource-use-efficiency and energetics in pigeonpea in
randomized block design replicated thrice.
Results: Pigeonpea seed
yield was significantly higher in ICM7 (1.92 t ha-1) ? a CA-based
ICM module which was followed by ICM5, ICM8 and ICM6.
In general, the CA based ICM modules showed an edge over CT based ICM modules
with reference to growth, yield and PAR interception. The
resource-use-efficiency indices like total water-use-efficiency (TWUE),
irrigation water-use-efficiency (IWUE), economic water-productivity (WPE),
partial factor productivity of applied nutrients (NPK) also exhibited same
trend as that of seed yield with highest TWUE (2.96? kg ha-mm?1)
and WPE (104.5 INR ha-mm?1) in ICM7? module. The energy
output was highest in ICM7 (2, 23, 664 MJ ha-1) followed by ICM5,
ICM8 and ICM6. The trend of energy-use-efficiency was
ICM4>ICM2>ICM1>ICM3>ICM5>ICM7>ICM6>ICM8>ICM9,
respectively.
Interpretation: Conservation
agriculture (CA) based modules like ICM7 can be recommended to the
farmers for enhancing the plant growth, PAR interception, crop productivity,
resource-use efficiency and energetics in pigeonpea alone or on
pigeonpea-wheat cropping system basis in semi-arid Indo-Gangetic plains
region (IGPR).
Key words: Energy dynamics, Integrated crop management, Pigeonpea,
PAR interception, Resource use efficiency
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