STUDY OF THE EFFECT OF RATIO C:N ON INCUBATION TIME AND QUALITY OF COMPOST PROCESS FROM AGRICULTURAL BY-PRODUCTS
Corresponding Author(s) : Bui Thi Tho
UED Journal of Social Sciences, Humanities and Education,
Vol. 2 No. 2 (2012): UED JOURNAL OF SOCIAL SCIENCES, HUMANITIES AND EDUCATION
The initial ratio C: N in materials has an important impact on the quality of compost. In this paper, we have studied the effect of ratio C: N at the levels of 20:1, 30:1, 40:1 and 50:1 on the speed and quality of compost with materials: water hyacinth, straw and manure. The results of the experiments show that the ratio C: N in materials at 30:1 is the most appropriate to increase speed and improve the quality of compost. Incubation time was shortened to 45 days. The temperature reached 68.6oC after 15 days of incubation, final pH reached 7.45, EC eventually reached 5.45 dS/m. There was a rich level of Humus content of 16.7%. The total protein content reached 1.8%, the total potassium reached 1.25% and total phosphate reached 0.48%. The above criteria are appropriate when they are used as fertilizer for agricultural land.
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