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Joint International Conference on Long-term Experiments ...

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(r=0.71), and between the total number of bacteria and CO2 producti<strong>on</strong> of the soil<br />

(r=0.82).<br />

Table 3. Correlati<strong>on</strong> ( r ) between the examined physical, chemical, and<br />

microbiological parameters of soil<br />

* Correlati<strong>on</strong> is significant at 0.05 level (2-tailed)-medium<br />

** Correlati<strong>on</strong> is significant at 0.01 level (2-tailed)-tight<br />

In treatments of bent<strong>on</strong>ite composted with manure, a str<strong>on</strong>g correlati<strong>on</strong> was found<br />

between pH and readily available phosphorus c<strong>on</strong>tent of the soil (r=0.71). Nitrate-N and<br />

the total number of fungi also correlated closely (r=0.80). Am<strong>on</strong>g microbial parameters,<br />

the total number of bacteria showed a str<strong>on</strong>g positive correlati<strong>on</strong> with CO2 producti<strong>on</strong><br />

(r=0.81), similarly to bent<strong>on</strong>ite treatments, and a str<strong>on</strong>g correlati<strong>on</strong> was found between<br />

the changes in the total number of bacteria and the biomass-C c<strong>on</strong>tent of soil (r=0.79).<br />

Composted treatments had a favourable effect <strong>on</strong> the amount of cellulose-decomposing<br />

bacteria, but the number of fungi showed a str<strong>on</strong>g negative correlati<strong>on</strong> with their<br />

increasing numbers (r=-0.71).<br />

252

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