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Abstract - Issue Sep 2021, 42 (5) Back
nstantaneous and historical temperature effects on a-pinene
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Soil carbon,
microbial biomass carbon, soil health and productivity of toria (Brassica
campestris L.) crop as affected by the application of organic manures
B. Gogoi1*,
B. Kalita2, I. Bhupenchandra3, P. Sutradhar4
and K.K. Sharma4
1Department of Soil
Science, Assam Agricultural University, Jorhat-785 013, India
2Regional
Agricultural Research Station, Shillongani, Assam Agricultural University,
Nagaon-782 002, India
3ICAR-KVK
Tamenglong, ICAR-RC for NEH Region, Imphal-795 004, India
4Department of
Agronomy, Assam Agricultural University, Jorhat-785 013, India
*Corresponding Author Email : bg100777@yahoo.co.uk
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Received:
06.08.2020 Revised:
01.02.2021 Accepted:
04.05.2021
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Abstract
Aim:
To investigate the effect of different organic manures on the performance of
toria crop and to understand their impact on the soil properties and
availability of nutrients in acidic sandy loam soil.
Methodology: Three-year fixed plot study was conducted with 7
treatments viz., T1: control, T2: recommended dose of
fertilizers (RDF), T3: cow dung manure @ 5 t ha-1, T4:
pig dung manure @ 5 t ha-1, T5: goat dung manure @ 5 t
ha-1, T6: farm yard manure (FYM) @ 5 t ha-1,
and T7: vermicompost @ 5 t ha-1 replicating 3 times in
a complete randomized block design. Data were collected and analysed
following the standard procedures. The yield and yield attributing parameters
of toria and the soil properties such as soil pH, organic carbon, microbial
biomass carbon and available NPK were studied.
Results:
Application of different organic manures significantly affected the plant
height, number of primary branches per plant, number of siliquae per branch,
number of seeds siliqua and 1000-seed weight of toria crop. Addition of
organic manure significantly enhanced the soil organic carbon, microbial
biomass carbon and available NPK in the soil over initial, except soil pH.
The cost of cultivation, gross return and net return varied from 10.50 ×103
to 23.10 ×103, 15.00 ×103 to 35.10 ×103 and
4.46 ×103 to 19.96 ×103 Rs. ha-1,
respectively. The B:C ratio varied in the order of goat dung manure > cow
dung manure >RDF >FYM > pig dung manure > vermicompost >
control treatment.
Interpretation: To achieve maximum performance with
nourishment of soil quality and health, application of vermicompost was
confirmed to be the best over other organic sources of nutrients primarily
due to enhancement in C and N status and an increase in microbial activities
in soil.
Key
words:
Brassica compestris, Microbial biomass carbon, Organic manure, Soil
properties
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