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Climate‑smart agriculture practices influence weed density and diversity in cereal‑based agri‑food systems of western Indo‑Gangetic plains

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Title Climate‑smart agriculture practices influence weed density and diversity in cereal‑based agri‑food systems of western Indo‑Gangetic plains
 
Identifier https://hdl.handle.net/11529/10548760
 
Creator Jat, Hanuman S.
Kumar, Virender
Kakraliya, Suresh K.
Abdallah, Ahmed M.
Datta, Ashim
Choudhary, Madhu
Gathala, Mahesh K.
McDonald, Andrew J.
Jat, Mangi L.
Sharma, Parbodh C.
 
Publisher CIMMYT Research Data & Software Repository Network
 
Description Climate-smart agriculture (CSA)-based management practices are getting popular across South-Asia
as an alternative to the conventional system for particular weed suppression, resources conservation
and environmental quality. An 8-year study (2012–2013 to 2019–2020) was conducted to understand
the shift in weed density and diversity under different CSA-based management practices called
scenarios (Sc). These Sc involved: Sc1, conventional tillage (CT)-based rice–wheat system with flood
irrigation (farmers’ practice); Sc2, CT-rice, zero tillage (ZT)-wheat–mungbean with flood irrigation
(partial CA-based); Sc3, ZT rice–wheat–mungbean with flood irrigation (partial CSA-based rice); Sc4,
ZT maize–wheat–mungbean with flood irrigation (partial CSA-based maize); Sc5, ZT rice–wheat–
mungbean with subsurface drip irrigation (full CSA-based rice); and Sc6, ZT maize–wheat–mungbean
with subsurface drip irrigation (full CSA-based maize). The most abundant weed species were P.
minor > A. arvensis > M. indicus > C. album and were favored by farmers’ practice. However, CSA-based
management practices suppressed these species and favored S. nigrum and R. dentatus and the effect
of CSAPs was more evident in the long-term. Maximum total weed density was observed for Sc1,
while minimum value was recorded under full CSA-based maize systems, where seven weed-species
vanished, and P. minor density declined to 0.33 instead of 25.93 plant m−
2 after 8-years of continuous
cultivation. Full CSA-based maize–wheat system could be a promising alternative for the conveniently
managed rice–wheat system in weed suppression in north-west India.
 
Subject Agricultural Sciences
 
Language English
 
Contributor KALVANIA, Kailash Chandra