Changes in nitrate N content in different soil layers after the application of livestock waste compost pellets in a sweet corn field

Autor:	Ken-ichi Yakushido, Katsumi Yamamoto, Wang Yan
Rok vydání:	2002
Předmět:	Compost business.industry Pellets Soil Science Plant Science engineering.material chemistry.chemical_compound Agronomy Nitrate chemistry engineering Soil horizon Environmental science Livestock Leaching (agriculture) business Dairy cattle Groundwater
Zdroj:	Soil Science and Plant Nutrition. 48:165-170
ISSN:	1747-0765 0038-0768
DOI:	10.1080/00380768.2002.10409187
Popis:	Changes in the nitrate content in different soil layers (0–15 cm, 15–30 cm, 30–45 cm, and below 45 cm) were investigated after the application of livestock waste compost pellets in a sweet corn field located at the National Agricultural Center for Kyushu Okinawa Region. Results indicated that livestock waste composts could lead to a high nitrate content in deeper soil layers of the early stage after the application of compost pellets, and increase the risk of nitrate pollution to underground water through leaching in summer in a rainy area. The dairy cattle (DW), swine (SW), and poultry waste (PW) compost pellets released about 31.5, 41.6, and 51.3% of N in about 3 months, respectively. However, N use efficiency by sweet corn was only 20.5, 20.6, and 28.8%, respectively. In order to enhance the N use efficiency by crops and decrease nitrate leaching to deeper soil layers in the Kyushu area, a large amount of application of animal waste compost pellets at one time should be avoided in summer. The ...
Databáze:	OpenAIRE
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