Journal of Food, Agriculture and Environment

Microcalorimetric studies for microbial activity of three vegetable soils

Author(s):

Tida Ge ¹, San’an Nie ^{1, 2}, Chengli Tong ^1*, He’ai Xiao ¹, Hongling Qin ¹

Recieved Date: 2011-11-18, Accepted Date: 2012-01-03

Abstract:

The microcalorimetric technique was used to analyze the influence of different plantation years in vegetable farms on soil microbial activity. With this aim, three soil samples were collected in Changsha, China, from different plantation years: 1-2 years (NX), 10 years (HX) and 30 years (CJ). Power- time curves were described for tested soil samples application by glucose and ammonium sulphate, the total heat changes of the microbial growth reaction (Q_total [J g^-1]) and the microbial growth rate constant (k [min^-1]) were calculated from the curves. Our results also indicated that all power-time curves presented typical changes of microbial activity. The sharps of these three time-power curves are similar and close to the sigmol. Plantation years had a significant impact (p<0.05) on the characteristic microcalorimetric parameters P_max (values of thermal power at the maximum of the peak), t_max (values of peak time, it is the time to reach the maximum of the peak), Q_total and k that generally followed the series: HX>CJ>NX (P_max and k), CJ>NX>HX (t_max) NX>HX>CJ (Q_total). In conclusion, microbial activity of the soil samples determined by microcalorimetry reflected differences in plantation years of vegetable soil. 

Keywords:

Soil microbial activity, microcalorimetric technique, vegetable soils, agricultural management

---

Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 1
Category: Environment
Pages: 930-932

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :