Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
T2a-15P-1069
Evaluation of Mustard [Brassica juncea (L.) Czern and Coss] Varieties to
Staggered Sowing in Changing Climatic Scenarios under Custard Apple
based Agri-Horti System
Rajnish Pandey, Sudhir Kumar Rajpoot, D.E. Nirmal, Miryala Sushma and A.K. Nema
Banaras Hindu University Varanasi (UP)–221 005 India.
The prospect of changing the global climate has piqued scientists' interest, as these changes
are having a severe influence on global crop productivity and jeopardizing global food
security. Due to its high sensitivity to environmental factors, the mustard yield may be
significantly impacted by climate change (Boomiraj et al., 2021). Negative growth rates in
mustard yield since 1997 may have been caused by unfavorable monsoon conditions, which
led to water stress (drought and excessive rainfall) and temperature increase. Temperature
cannot be easily altered in the field, but sowing time can be adjusted such that the various
physiological phases of the crop coincide with specified (most suited) temperature during the
crop growth cycle, which is the most important non-monetary input for increasing production
(Deshmukh and Patel, 2013). Selecting appropriate cultivars can also help to mitigate the
negative impacts of delayed sowing on productivity, as the extent of yield reduction varies
with variety (Lal et al., 2017).
Methodology
A field experiment was conducted to evaluate the effect on mustard [Brassica juncea(L.)
Czern and Coss] varieties to staggered sowing in changing climatic scenario under custard
apple based agri-horti system at Agricultural Research Farm, Rajiv Gandhi South Campus,
Banaras Hindu University, Barkachha, Mirzapur, Uttar Pradesh during the rabi season of
2021-22 in a split plot design with three replications. The main plot treatments were three
planting dates (S1: 15 th October, S2:30 th October, and S3:15 th November), while the subplots
were five distinct mustard varieties (Pitambari, RH-725, Giriraj, RH-749, and Kranti).
Results
Among the varieties, Giriraj outperformed other varieties in terms of growth, and yield
parameters. Late sown (November) mustard crop exhibited more decline in yield, and yield
characteristics than October sown crop, however among the varieties, Giriraj demonstrated
more resistance to projected climate change than other varieties. The highest seed yield was
recorded when the crop was sown on the 30 th of October ((1536.89 kg ha -1 ), followed by the
15 th of October (1372.78 kg ha -1 ), and the lowest yield was recorded when the crop was sown
on 15 th of November (1178.47 kg ha -1 ). Variety Giriraj had the highest seed yield (1583.27 kg
ha -1 ), followed by variety RH-725(1499.75 kg ha -1 ), RH-0749 (1382.58 kg ha -1 ) Kranti
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Climate resilient agriculture for risk mitigation