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- Title
The effect of over-irrigation of livestock wastewater on the safety of pasture.
- Authors
Lee, H. J.; Huang, Y. L.; Li, T. R.
- Abstract
This experiment was conducted to irrigate the livestock wastewater with pipe and to know the effect of over-irrigation of livestock wastewater on the safety of pasture. The wastewater of the cattle farm in 1.2 times, 1.4 times, and 1.6 times of nitrogen necessary amounts was irrigated to the Napier grass No. 8 in 5 weeks. After wastewater irrigation, the nutrition contents of the Napier grass were detective once a week for four weeks. The results were showed that the agronomic traits of the over-irrigation Napier grass, the top height of leaf collar (THC) and the plant height of leaf tip (PHL) in 1.2 times treatment were much lower than other treatments. After stopping irrigation of the wastewater for four weeks, collecting the Napier grass samples for nutrient analysis, the concentration of nitrogen, potassium, and zinc are all decreased with the increase of the number of weeks without irrigation. With an excess of 1.6 times the wastewater in the second week of stopping irrigation, the concentration of nitrate in the Napier grass continued rising until the third week. The ADF and NDF of the plants gradually increased with the increase of the number of weeks without irrigation. At least 3 weeks to harvest after stop irrigation to ensure the accumulation of nitrate in Napier grass is low.
- Subjects
PASTURE animals; CENCHRUS purpureus; AGRONOMY; NITRATES; IRRIGATION water
- Publication
Journal of the Chinese Society of Animal Science, 2021, Vol 50, p69
- ISSN
0253-9187
- Publication type
Article