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摘要:
Beef cattle (Bos taurus L.) feedlots pose serious environmental challenges associated with nutrient runoff. Smooth bromegrass (Bromus inermis Leyss.) is a perennial rhizomatous grass that is widely used for forage production in the USA and Canada. The objective of this research was to determine the best management system for producing forage from a vegetated treatment area (VTA) while maintaining the capacity of the VTA to remove nutrients from feedlot effluent. Four harvest management treatments (1-, 2-, and 3-harvest per year and an un-harvested control) were applied during spring 2005 and evaluated over a 5-yr period in a smooth brome sward on a VTA near Howard, SD. Mean annual total forage production during a 4-yr period ranged from 6.2 Mg·ha-1 to 9.5 Mg·ha-1 for 1- and 3-harvest systems, respectively. Nutrient removal by the bromegrass ranged from 148 kg·N·ha-1 and 15 kg·P·ha-1 for the 1-harvest treatment to 244 kg·ha-1 N and 24 kg·ha-1 P for the 3-harvest treatment. Results indicated that high amounts of smooth bromegrass forage could be produced and soil nutrients removed from 2- and 3-harvest systems without compro-mising stand vigor and persistence on a VTA in eastern South Dakota.
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篇名 Impact of Harvest Management on Forage Production and Nutrient Removal by Smooth Bromegrass on a Vegetated Treatment Area
来源期刊 美国植物学期刊(英文) 学科 医学
关键词 FORAGE Production HARVEST Management SMOOTH BROMEGRASS
年,卷(期) 2015,(9) 所属期刊栏目
研究方向 页码范围 1550-1559
页数 10页 分类号 R73
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研究主题发展历程
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FORAGE
Production
HARVEST
Management
SMOOTH
BROMEGRASS
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相关学者/机构
期刊影响力
美国植物学期刊(英文)
月刊
2158-2742
武汉市江夏区汤逊湖北路38号光谷总部空间
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1814
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0
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