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Department of Plant Sciences

UC Davis

The soil organic matter dynamic by using different compost organic manure in a vegetable system in North China

Abstract

A field experiment with four treatments was conducted in Beijing suburb from 2006 to 2008 to study the soil organic matter (SOM) dynamic. The four treatments were chicken manure compost, cattle manure compost, biogas ferment residue compost and control (no fertilizer input). All the manured treatments had same total N input. The results showed that there was no significant difference of dry matter yield among the manured treatments, but they were all higher than the control. The SOM from chicken manure compost, cattle manure compost and biogas ferment residua treatment increased 85.4%, 31.9% and 20.9%, respectively, compared to the no fertilizer input plot. There was high N-leaching risk after crop harvest from biogas compost treatment in the soil compared to others. The Nmin residua in 90-180 cm soil depth got 808 kg N ha-1.

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