Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges & Opportunities
during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
before the sowing of maize and wheat as per the treatments. The sources of N, P and K were
urea, single superphosphate and diammonium phosphate and muriate of potash. Maize (PMH 13)
and wheat (PBW 660) were grown in monsoon (July to September) and winter season
(November to April), respectively. One half of N was applied at the time of sowing and
remaining half at knee high stage in maize and crown root initiation stage in wheat. Other
recommended cultural practices for both the crops were followed throughout the study.
Results
The yield of maize increased with nutrient management treatments as compared to control.
Significantly higher grain yield of maize (3711 kg ha˗1 ) was recorded with 100% NPK + FYM
10 t ha˗1 as compared to control, N (100% RDF) and NP (100% RDF) but was statistically at par
with all other treatments. The higher water use efficiency (6.25 kg ha˗1 mm˗1 ) was also recorded
in the treatment 100% NPK + FYM 10 t ha˗1 as compared to other treatments. In wheat,
significantly higher grain yield was recorded with 100% NPK + FYM 10 t ha˗1 as compared to
control, N (100% RDF), 100%N through FYM and 100%N through FYM+ biofertilizers but was
statistically at par with all other treatments. The highest water use efficiency was also recorded in
the treatment 100% NPK + FYM 10 t ha. Soil moisture exhibited significant variation among the
treatments. The FYM substituted plots, by and large, had significantly higher soil moisture than
sole chemical fertilized and control treatments. Organic carbon exhibited significant variation
among different treatments and highest OC was recorded in NPK (100%RDF) + FYM10 t ha˗1 as
compared to all other treatments.
Effect of integrated nutrient management on yield and water use efficiency of rainfed
Treatments
maize-wheat system
Grain
yield
(kg/ha)
Maize Wheat Soil properties
WUE
(kg/hamm)
Grain yield
(kg/ha)
WUE
(kg/hamm)
Soil
moisture
(%)
Control 1370 d 2.31 d 1883 d 9.49 e 11.46 c 0.41 c
N(100% RDF) 2141 cd 3.60 cd 3017 bc 15.40 cd 11.51 c 0.42 bc
NP(100%RDF) 2244 bcd 3.78 bcd 3258 abc 16.62 bcd 11.58 c 0.48 abc
NPK(100%RDF)(DAP) 3065 abc 5.16 abc 4050 ab 20.70 abc 12.39 bc 0.48 abc
NPK(100%RDF)+S(SSP) 3101 abc 5.22 abc 3792 ab 19.36 abc 11.78 c 0.48 abc
NPK(100% RDF)+ZnSO 4 3246 ab 5.47 ab 4267 a 21.76 ab 11.38 c 0.51 ab
NPK(50%RDF)+FYM10t/ha 3215 ab 5.41 ab 3492 abc 18.27 abcd 13.41 ab 0.52 a
NPK(100%RDF)+FYM10t/ha 3711 a 6.25 a 4292 a 22.46 a 14.51 a 0.56 a
NPK(150%RDF) 3305 ab 5.56 ab 3683 ab 19.08 abcd 12.30 bc 0.55 a
SOC
(%)
Sustainable soil management for resilient rainfed agro-ecosystem: conservation agriculture, organic farming,
INM, soil-microorganisms-plant interactions
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