Properties of livestock feces compost, 1: Effect of bulking agents or the location of piles on chemical properties of dairy cattle and beef cattle feces compost
2000
Koyama, F. (Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Takamuku, K.
We analyzed the application of cattle feces compost for better soil management in Fukuoka prefecture with a view toward determining the chemical properties of compost attributable to different types of cattle and bulking agents. The results were as follows: (1) Phosphorus pentaoxide in beef cattle compost mixed with sawdust (A) was significantly higher than that of dairy cattle compost mixed with sawdust (B). On the other hand, calcium oxide in (A) tended to be lower than (B). These differences were probably due to the ingredients in the feed. The total carbon in (A) was higher than (B) because most of the bedding was made up of sawdust. As a result, the C/N ratio in (A) amounted to 24. (2) The moisture content and quality of the fertilizer properties in dairy cattle compost mixed with rice hulls (C), compared with (B). decreased due to drainage. (3) The range of difference in chemical properties between (A) and (B) was drastic because some of the droppings were piled outdoors during the maturing process. Not only was the moisture content of these droppings were higher, but the electric conductivity, potassium oxide and sodium oxide levels were also higher. (4) Potassium oxide in cattle compost mixed with sawdust tended to be higher than in the past. It seems that the reason for this increase coincides with the larger number of composting facilities in use that mix cattle feces and urine. (5) If 1 ton of the standard cattle compost maturing at indoor facilities were applied, then the potassium oxide content of fertilizer would be between 9 and 10kg. Thus, we recommend reducing the level of potassium oxide application of cattle compost
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