N release from livestock waste compost pellets in barley fields
| Autor: | Wang Yan, Ken-ichi Yakushido, Katsumi Yamamoto |
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| Rok vydání: | 2001 |
| Předmět: | |
| Zdroj: | Soil Science and Plant Nutrition. 47:675-683 |
| ISSN: | 1747-0765 0038-0768 |
| DOI: | 10.1080/00380768.2001.10408432 |
| Popis: | N release patterns from dairy cattle, swine, and poultry waste compost pellets were studied using the buried glass filter paper method in barley fields. Field experiments with barley were also carried out to study the relationship between N release from pellets and N absorption by barley. Results showed that about 28, 36, 44% and of N were released from 3 types of compost pellets throughout the growth stages of barley, respectively. However, since more than 60% of N was released before the tillering stage of barley, barley absorbed a large amount of N and grew excessively in winter. When poultry and swine waste compost pellets were incorporated into dairy cattle waste compost at the N ratio of 1 : 1 or 2 : 1, N release rate from the incorporated pellets decreased, but N was still mainly released at early stage after application. Compost pellets made of dairy cattle and swine waste compost at the N ratio of 1 : 1 led to the highest production of barley in this experiment, followed by compost pelle... |
| Databáze: | OpenAIRE |
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