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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Sep 2021, 42 (5)                                     Back

nstantaneous and historical temperature effects on a-pinene

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 :


Received: 06.08.2020                                                                       Revised: 01.02.2021                                                          Accepted: 04.05.2021




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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