Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
The foliar application of different growth regulators, seaweed extract and potassium nitrate
showed variation on yield characteristics of soybean such as number of pods plant -1 , Number of
seeds plant -1 , Seed yield plant -1 (g), Seed index (g) (Weight of 100 seeds), Seed yield kg ha 1 ,
Straw yield kg ha -1 , Harvest index %. Among all the treatments application of T5- seaweed
extract-400 ppm significantly increased all the yield parameters except harvest index. The
highest number of pods plant -1 (32.97), Number of seeds plant -1 (72.83), seed yield plant -1 (6.57
g), seed index (9.62 g), seed yield (2307 kg ha 1 ), straw yield (3055 kg ha -1 ) were observed at
seaweed extract-400ppm which was significantly higher over all the treatments but highest
harvest index (43.28%) was observed in T2- GA3-100ppm, and was at par with treatment T2-
GA3-100ppm and T1- Salicylic acid-50ppm. However lower values were recorded in treatment
T7-Water spray. Similar trend of observation observed by Kavitha et al. (2008), Agwane and
Parhe (2015), Satish Kumar et al. (2018).
Conclusion
One-year experiment was conducted on soybean crop with different application of growth
regulators, seaweed extract and potassium nitrate during KHARIFseason 2018. Based on this
field investigation the following conclusioncan be drawn. Foliar application of Seaweed extract -
400 ppm at flowering and pod developing stage recorded highest growth parameters, yield
attributes and seed yield having at par values with GA3 -100 ppm and Salicylic acid -50 ppm.
From the above results and discussion, it may be concluded that, application of seaweed extract-
400 ppm at flowering and pod developing stage would be promising practice for soybean growth
and yield.
References
Agwane, R. B. and Parhe, S. D. 2015. Effect of seed priming on crop growth and seed yield of soybean (Glycine
max L. Merrill). Bioscan 10: 265-270.
Jensen. 1993. Presence and future needs for algal products. Hydrobiologia 261: 15-21.
Kavitha, M. P., Ganeshraja, V. and Paulpandi, V. K. 2008. Effect of foliar spraying of sea weed extract on
growth and yield of rice (Oryzasativa L.) Agric. Sci. Digest, 28(2): 127 - 129.
Noda. 1990. Antitumour activity of marine algae. Hydrobiologia 204: 577-584.
Satish Kumar, A. N., Sakthivel, E., Subramanian, R., Kalpana, P., Janaki. and Rajesh, P. 2018. Influence
of foliar spray of nutrients and plant growth regulators on physiological attributes and yield of
finger
millet
(Eleusine coracana (L.) Gaertn.). Int. J. Chem. Stud., 6(3): 2876-2879.
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
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