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Journal of Environmental Biology

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

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    Abstract - Issue Sep 2010, 31 (5)                                     Back


abstract_01

Changes in some soil properties at different incubation

periods after tobacco waste application  

 

Coskun Gulser*, Zeynep Demir and Serkan Ic

 

Soil Science Department, Agricultural Faculty, Ondokuz Mayis University - 55139, Samsun,Turkey

(Received: September 28, 2009; Revised received: September 23, 2009; Accepted: September 24, 2009)

 

Abstract: In this study, changes in organic carbon (OC), basal soil respiration (BSR), nitrate nitrogen (NO3-N), electrical conductivity (EC) and aggregate stability (AS) of a clay loam soil due to tobacco waste (TOW) application were monitored for 240 days. After incorporating 5% TOW into soil according to oven dry weight basis, soil samples were incubated at field capacity for 20, 40, 80, 140 and 240 days under a greenhouse condition. TOW application significantly increased all soil properties over the control treatment. Soil OC and AS values had significant positive correlations each other and with the other soil properties. Soil OC, BSR and AS values significantly increased from 0.12%, 0.03 mg CO2-C g-1 dry soil 24 hr and 20.7% in control treatment to 1.13%, 3.7 mg CO2-C g-1 dry soil 24 hr and 54.4% in TOW treatment, respectively, in 20 days. While the highest NO3-N (1780 ppm) was found in 40 days, the highest EC (3.35 dS m-1) was in 240 days after TOW application. Disaggregation occurred in all treatments after 20 days of incubation due to probably the more substrate demands of microorganisms in soil.    

Key words: Tobacco waste, Aggregate stability, Basal soil respiration, Nitrate, Electrical conductivity

       PDF of full length paper is available online

 

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