Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
application of 40 kg P2O5/ha recorded significantly highest seed and stalk yield of castor as
compared to control, but it was at par with application of 20 kg P2O5/ha. Similarly maximum net
returns of Rs. 10081/ha and B: C ratio of 1.51 were recorded with application of 60 kg N/ha.
While among phosphorus levels, maximum net returns of Rs. 7814/ha and B: C ratio of 1.40
were recorded with 40 kg P2O5/ha followed by Rs. 7109/ha and B: C ratio of 1.37 with
application of 20 kg P2O5/ha.
Growth, yield and economics of castor as influenced by nitrogen and phosphorus levels
under conserved soil moisture (Pooled mean of 5 years)
Treatments
Nitrogen (kg/ha)
Phosphorus (kg/ha)
Conclusion
On the basis of five years pooled results, it can concluded that higher seed yield and net returns
from castor (GCH-7) can be obtained with application of 60 kg N and 40 kg P2O5/ha in medium
black clayey soil under conserved soil moisture in Ghed area of Gujarat.
References
Falasca, S. L., Ulberich, A. C., and Ulberich, E., 2012. Developing an agro-climatic zoning
model to determine potential production areas for castor bean (Ricinus communis L.). Ind.
Crops and Prod. 40, 185-191.
Plant height
(cm)
Seed
yield
(kg/ha)
Stalk
yield
(kg/ha)
Net
return
( /ha)
B:C ratio
Control 56.4 597 1242 3947 1.21
20 59.1 647 1309 5372 1.28
40 60.2 731 1461 7993 1.41
60 60.8 799 1631 10081 1.51
SEm+ 1.5 18 44
CD (P=0.05) NS 54 136
Control 58.0 648 1340 5604 1.30
20 59.4 701 1423 7109 1.37
40 60.0 731 1471 7814 1.40
SEm+ 0.7 11 23
CD (P=0.05) NS 49 124
664 | Page Resource conservation and rainfed agriculture