Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
harvested in the first week of November. Vegetable mustard was sown in the second week of
November and harvested in the third week of January. Okra was planted in the first week of
March and harvested in the second fortnight of May during both tears of experimentation. After
harvesting, threshing, cleaning, and drying, the seed yield of crops was estimated. Economic
yields of the component crops were converted to pigeon pea-equivalent yield (PPEY),
considering the prevailing minimum support price (MSP)/market prices of the crops. System
productivity was calculated by adding the PPEY of the component crops. Production efficiency
in economic terms was calculated by taking system net returns and the B: C ratio. The data
obtained from the study for two years were analyzed statistically using the F–test.
Results
The yield of component crops of the system expressed as pigeon pea equivalent yield (PPEY)
under various enriched organic formulations. Among the treatments, the application of 100%
RDN through PHA-based formulation registered significantly highest PPEY (8.70 t ha -1 and
8.97 t ha -1 ) over other treatments which was statistically on par with 100% RDN through PPCbased
formulation and FYM during both the years of study. However, the treatment receiving
100% RDN through improved RRC were also found statistically similar to 75% RDN through
PHA-based formulation and PPC-based formulation. The application of 100% RDN through
PHA-based formulation increased the PPEY to the extent of 53.5 per cent during 2020-21 and
55.0 per cent during 2021-22, respectively over control. This might be due to balanced supply
of nutrients to the crops throughout the crop growth period as FYM undergo decomposition
during which series of nutrient transformation takes place and helps in their higher availability
to the crops. Higher uptake of nutrients by the crops will result in higher yield.
Production economics of cropping systems under various enriched organic formulations have
been presented in Table. Critical examination of data revealed that application of 100% RDN
through PHA-based formulation gave significantly maximum system net returns and B: C ratio
(Rs.553.6 x10 3 ha -1 and Rs.567.8 x10 3 ha -1 ; 4.96 and 4.94 during 2020–21 and 2021–22,
respectively), which remained statistically similar to 100% RDN through PPC-based
formulation and FYM during both the years. Higher returns under PHA-based formulation
might be due to the higher yield obtained from FYM coupled with a relatively lower cost of
FYM during both years which had increased the net returns during both years.
Conclusion
Based on the results of the present study, it can be concluded that the application of
organic nutrient sources at 100% recommended dose of nitrogen through PHA-based
formulation was found to be most effective in achieving higher productivity and profitability
in pigeon pea–vegetable mustard–okra cropping system.
Ecosystem based approaches for climate change adaptation, ecosystem services, integrated farming system
models, Land degradation neutrality
219 | Page