STUDIES ON IN-SITU MOISTURE CONSERVATION WITH SUBSOILER IN FINGER MILLET AND GROUNDNUT BASED INTERCROPPING SYSTEMS
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Date
2019-09-23
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UNIVERSITY OF AGRICULTURAL SCIENCES, GKVK BENGALURU
Abstract
In the present scenario, hard pan formed at the subsoil has declined the
productivity in the dryland which can be resolved by subsoiler which is used for breaking
the compacted soil, thereby conserving more moisture. To know the effect of subsoiler,
an experiment was conducted at AICRP on dryland agriculture on moisture conservation,
mainly consisting main plot as cropping system viz., C1-fingermillet+pigeonpea (8:2) and
C2-groundnut+pigeonpea (8:2) intercropping systems and subplot consisting of S1-
Subsoiling at 2m interval, S2-Subsoiling at 4m interval, S3-Subsoiling at 2m
interval+FYM, S4-Subsoiling at 4m interval+FYM and S5-Control with 3 replications. In
the main plot, parameters like moisture and infiltration rate were found higher with
GN+PP (8:2) 60 cm due to ground covering of groundnut. Among the subplot, Subsoiling
at 2m interval+FYM found to conserve the higher moisture, higher infiltration, plant
height, dry matter content and yield parameters due to subsoiling and application of
FYM. Lower soil compaction was found in S1 and S3 treatments due to subsoiling. B:C
ratio was higher in C1 due to lower cost of cultivation and S3 showed higher gross
returns, however B:C ratio was higher in S1 was mainly because application of FYM in
S3 increased the cost of cultivation decreasing the B:C ratio. Overall, C1 showed higher
net returns while, S3 found better for better moisture conservation and nutrient
availability and S1 were found to be the best treatment in terms of profitability.