Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Dharani recorded 39 and 39.7% pod yield reduction. It indicates that K9 and Dharani are
drought resistant varieties. Ramachandrappa et al. (1992) reported that the groundnut crop
was more susceptible to moisture stress from70 days to harvest (pod initiation to maturity).
Golakiya and Patel (1992) reported that water stress at flowering, pegging, pod development
and pod maturation stages reduced the pod yields of groundnut by 26.6, 44.7, 56.3 and 60
percent respectively.
Conclusion
The findings of the present study indicated that pod filling to maturity stage is most critical
stage in groundnut with highest pod yield reduction. Among the varieties, K9 and Dharani
are more drought resistant than K6, Ananta and Harithandra varieties.
References
Golakiya, B. A., and Patel, M. S., 1992. Growth dynamics and reproductive efficiency of
groundnut under water stress at different phenophases. Indian J. Agron. 26: 179-186.
Ramachandrappa, B. K., Kulakarni, K. R., and Nanjappa, H. V. 1992. Stress day index for
scheduling irrigation in summer groundnut (Arachis hypogaeaL.). Indian J. Agron. 37:
276-279.
Vittal, K. P. R., Maruthi Sankar, G. R., Singh, H. P., Balaguravaiah, D., Padmalatha, Y. and
Moisture
stress
Moisture
Stress
during
30-50
DAS
Moisture
Stress
during
50-70
Yellamanda Reddy, T. 2003. Modeling sustainablility of crop yield on rainfed
groundnut based on rainfall and land degradation. Indian J. Dryland Agric. Res. Dev.
18(1) : 7–13.
Dry matter partitioning (g) per plant and pod yield of groundnut as influenced by
moisture stress imposed during different stages
Mean
Variety
Leaf dry
weight per
plant (g)
40
DAS
80
DAS
Stem dry
weight per
plant (g)
40
DAS
80
DAS
Root dry
weight per
plant (g)
40
DAS
80
DAS
Leaf area
index (LAI)
40
DAS
80
DAS
Pod
yield
(kg/ha)
%
Decrease
of pod
yield over
control
K6 0.68 3.21 0.72 2.75 0.23 0.56 0.65 1.33 1638 -32.0
K9 0.82 4.31 0.96 3.15 0.18 0.61 0.80 1.69 1733 -17.0
Anantha 0.89 3.98 0.76 2.70 0.15 0.63 0.75 1.54 1614 -28.0
Dharani 0.96 4.33 0.82 3.83 0.10 0.59 0.94 1.77 1842 -16.0
Harithandra 0.71 2.67 0.67 2.51 0.08 0.42 0.68 1.16 1547 -27.0
Mean 0.81 3.70 0.79 2.99 0.15 0.56 0.76 1.50 1674 -24.0
K6 0.76 3.92 0.85 2.84 0.16 0.62 0.76 1.46 1374 -43.0
K9 0.82 4.33 1.16 3.48 0.09 0.84 0.66 1.88 1671 -20.0
Ananta 0.83 4.32 0.95 3.14 0.14 0.56 0.69 1.56 1271 -43.0
Dharani 1.05 3.97 0.81 2.89 0.16 0.78 0.97 1.76 1694 -22.0
Resource conservation and rainfed agriculture
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