Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
during kharif season of 2018, 2019 and 2020. The field experiment was laid out in split plot
design and replicated thrice. Treatment consisted of twenty treatment combinations
comprising four crop geometry in main plot and five foliar applications of plant growth
regulators in sub plot. Sowing was done on 26 th June 2018, 28 th June 2019 and 29 th June
2020 during first, second and third year of experimentation, respectively. The recommended
dose of NPK and plant protection schedule was followed. Periodical observations of growth
and yield contributing characters of pigeonpea along with the yield data were recorded and
statistically analyzed to evaluate the effect of different treatments. The fertility co-efficient
of pigeonpea was arrived from relationship between the number of flowers produced per
plant and the numberof pods produced per plant and the results were expressed in terms of
percentage (Sumathi et al. 2016).
Results:
The data from tables revealed that, crop geometry and foliar application of plant growth
regulators significantly influenced the growth, yield and economics of pigeonpea. Crop
geometry of 120cmx20cm and 75-150cmx20cm recorded higher values of growth and yield
parameters per plant, followed by crop geometry of 60-120cmx20cm.Maximum seed yield
was recorded with the interaction of crop geometry 60-120cmx20cm (S3) with foliar
application of Brassinosteroids @ 0.1 ppm which was at par with interaction of crop
geometry 60-120cmx20cm with foliar application of NAA @ 40 ppm and interaction of crop
geometry 90cmx20cm with foliar application of Brassinosteroids @ 0.1 ppm . These results
agree with findings reported by Kashyap et al., (2002), Ramesh and Ramprasad (2013),
Sumathi et al. (2016). The highest net realization was recorded with the interaction of crop
geometry 60-120cmx20cm with foliar application of Brassinosteroids @ 0.1 ppm and
interaction of crop geometry 90cmx20cm with foliar application of Brassinosteroids @ 0.1
ppm, interaction of crop geometry 60-120cmx20cm with foliar application NAA @ 40 ppm
and with interaction of crop geometry 90cmx20cm with foliar application of NAA @ 40
ppm.
Conclusion
Based on the three years findings of present investigation, it is concluded that crop geometry
of 60-120cmx20cm and 90cmx20cm for pigeonpea were found to be productive, profitable
and remunerative as compared to crop geometries. While among the different plant growth
regulators, foliar application of Brassinosteroids @ 0.1 ppm (02 sprays at bud initiation and
flowering) was found to be beneficial in improving yield parameters, seed yield, net returns
and also the fertility co-efficient of pigeonpea, as compared to other plant growth regulators.
References
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Ecosystem based approaches for climate change adaptation, ecosystem services, integrated farming system models,
Land degradation neutrality