Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
overall benefit cost ratio (2.93) as compared to rest of the cropping sequences and existing
sunflower-chickpea system (Table 1). It also recorded greater sustainable yield index (0.93)
and partial factor productivity. Application of fertilizers based on STCR to boost up the system
productivity (3268 kg/ha) and sustainable yield index (51.2) over RDF of the region. It can be
concluded that yearly sequence of maize-sunflower was found remunerative and potential
alternative double cropping system over existing sunflower-chickpea system in Vertisols of
Northern Karnataka.
Conclusion
Over 3-years, among Kharif crops, maize has produced higher grain yield in terms of sunflower
equivalent yield (SEY). For rabi sunflower and chickpea application of fertilizers based on
100% STCR@3t/ha target recorded higher SEY. Maize-sunflower sequence gave higher
system SEY (4355 kg ha -1 ) and economic returns (Rs.128400 ha -1 ) over existing sunflowerchickpea
and other systems. It was concluded that maize- sunflower system was greater
productive with application of fertilizers based on STCR 100% for rabi crops.
Yield and economics of kharif and rabi crops in sunflower-based cropping systems
(Data is average of 3 years)
Cropping
system 'C'
Kharif
(kg/ha)
Cropping system (C)
Kharif
SEY
(kg/ha)
Rabi
(kg/ha)
Rabi
SEY
(kg/ha)
System
SEY
(kg/ha)
GR
(Rs./ha)
NR
(Rs./ha)
COC
(Rs./ha)
B:C
ratio
Bajra- SF 1243 490 1650 1650 2140 20075 8075 12000 1.67 0.47
Maize-SF 8771 2589 1701 1701 4290 106129 68629 37500 2.83 0.93
Soybean-
SF
SF-
Chickpea
879 911 1830 1830 2741 37358 11358 26000 1.44 0.53
1612 1612 1360 1659 3271 66092 39272 26820 2.46 0.69
S.Em.+ 72.6 20.4 23 77.9 - - - -
CD @ 5% 256.3 71.82 81.1 274.8 - - - -
Fertilizer levels (F)
RDF - 1386 1661 1603 3120 67650 40740 26820 2.52 0.49
STCR
@3t/ha
- 1309 1867 1959 3268 69741 42921 26820 2.63 0.51
50% STCR - 1506 1377 1437 2943 75030 48210 26820 2.86 0.48
S.Em+ 49.7 25.1 26.1 56.8
CD @5% 150.3 76 79 171.8 - - - -
F x C NS NS NS NS - - - -
SEY- Sunflower equivalent yield; SYI- Sustainable yield index; GR- Gross returns; NR- Net Returns; COC-
Cost of cultivation; SF- Sunflower
SYI
817 | Page Institutional and policy innovations for accelerated and enhanced impacts