Book of Extended summaries ISDA

International Conference on Reimagining Rainfed Agro-ecosystems: Challenges &
Opportunities during 22-24, December 2022 at ICAR-CRIDA, Hyderabad
Methodology
A long-term field experiment under finger millet (EleusinecoracanaL.) monocropping was
established in 1978, at the All IndiaCoordinated Research Project for Dryland Agriculture,
University of Agricultural Sciences, Bangalore, India. Theexperimental site is situated at
latitude of 13°050 13.0″ north, longitude of 77°390 22.1″ east and an altitude of 929 mabove
mean sea level, in the eastern dry zone of Karnataka.Soils in the experimental field belong to
Vijaypura soilseries typical of the Alfisol order. The soils are typicallateritic and classified as
fine, kaolinitic, isohyperthermic, TypicKandiustalf as per USDA classification with
claycontent increasing with soil depth. These soils are yellowishred, lateritic and are derived
from granite gneiss undersubtropical semi-arid climate. They are very deep,
welldrainedsandy loam to sandy clay loam with clay contentincrease in depth and occur in
nearly level to gently slopingareas.
The experiment consisted of finger millet, monocropping, arranged in a randomized
blockdesign with two replications and five treatments [T1: control(no fertilizer and no
farmyard manure (FYM) applied), T2:FYM 10 t/ha, T3: FYM 10 t/ha + 50% NPK, T4: FYM
at10 t/ha + 100% NPK and T5: 100% recommended NPK].The 100% recommended NPK
application for finger milletwas 50 kg N, P and K per hectare as per thepackage of practices
recommended by the University ofAgricultural Sciences, Bangalore, based on largescaleexperimentation.
The FYM was prepared using cow dungcollected from a unit
maintained in the university, whereinthe bedding material was millet straw and the
nutrientcontent was analyzed in the laboratory on fresh weight basis. The average
composition of FYM consisted of 0.54, 0.35and 0.63% N, P and K, respectively. Soon after
the rainfallin June, the land was ploughed to an average depth of15–20 cm, using a bullockdrawn
country plough. After theinitial ploughing, FYM was applied according to
treatmentand incorporated by harrow. The fertilizer N was applied as urea, while fertilizer P
wasapplied as di-ammonium phosphate (DAP) and potassium asmuriate of potash (MOP).
The experiment was conducted ona net plot size of 2.7 m 9 11.0 m with row 9 plant spacingof
30 cm 9 10 cm. Finger millet (GPU-28) monocropping involved finger millet in allyears. Soil
samples were collected from each plot at a soil depth of0–15 cm after harvest of the crop.
Statistical analysis
The data were analysed using randomized blockdesign (RBD). Statistical analysis was
performed byWindows based SPSS programme (ver. 10.0, SPSS Inc., 1996). The SPSS
procedure was used foranalysis of variance (ANOVA) to determine thestatistical significance
of treatments effect. Simple correlation coefficients andregression equations were also
developed to evaluaterelationships between the response variables using thesame statistical
package. The 5% probability level isregarded as statistically significant.
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soil-microorganisms-plant interactions