Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
(STRVs) do not perform same under different establishment systems, thus site-specific
experimentation is required to evaluate explore their performance. Therefore, present research
evaluated appropriate crop establishment and STRVs for better stress tolerance, enhanced
yield stability and profitability under rainfed stress-prone environment.
Methodology
The present investigation was carried out at the Agricultural Research Farm, Institute of
Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh during kharif season
of 2017 and 2018 for evaluating the performance of STRVs under different crop establishment
methods in rainfed upland ecosystem. The experiment consisted of two factors i.e. STRVs and
crop establishment systems. Research trial was laid out in split-plot design with three crop
establishment systems i.e. puddled transplanted, direct drill seeding on flat bed, direct seeding
on furrow irrigated raised bed (FIRB) in main plots and five STRVs i.e. DRR42, DRR44,
Sukha dhan5, Sukhadhan 6, Sarjoo 52 in sub plots and was replicated thrice. The allocation of
treatments was based on principles of randomization.
Results
Analysis showed that significantly higher growth and yield attributes was recorded in direct
seeding on raised bed than with puddling method of crop establishment. Among different
STRVs, better growth and yield attributes was recorded for DRR 44 followed by DRR 42,
Sarjoo 52 and Sukhadhan 6 while minimum growth and yield attributes was recorded for
Sukhadhan 5. Due to better moisture retention in direct seeding on raised bed, improvement in
yield attributes occurred resulting in greater stress tolerance and higher yield. The highest net
return and B:C for rice was also obtained from direct seeding on raised bed followed by direct
drill seeding on flat and puddled transplanting as Higher cost was incurred for tillage operations
under conventional system.
400
350
300
250
200
150
100
50
No. of tillers per m2 at 90 DAS
Dry matter accumulation at 90 DAS(g m-1)
0
Crop
establishment
systems (CE)
CE1: Puddle
transplanting
CE2: Direct
drill seeding on
flat
CE3: Direct
seeding on
raised bed
(FIRB)
Varieties
(STRVs)
V1: DRR 42 V2: DRR 44 V3: Sukha
Dhan 5
V4: Sukha
Dhan 6
V5: Sarjoo 52
Influence of STRVs and crop establishment systems on growth attributes of rice under rainfed stressprone
rice ecosystem
385 | Page Managing genetic resources for enhanced stress tolerance