• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>American Forage and Grassland Council Conference >UPTAKE OF NUTRIENTS BY A COOL SEASON PERENNIAL AND WARM SEASON ANNUAL GRASS
【24h】

UPTAKE OF NUTRIENTS BY A COOL SEASON PERENNIAL AND WARM SEASON ANNUAL GRASS

机译：通过凉爽的季节和温暖的季节摄取营养素的吸收

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

With the increase in broiler production in Kentucky over the last few years, more farmers are turning to poultry litter as an inexpensive nutrient source for their forages. However, continued litter application can lead to nutrient buildups that can cause water pollution and nutrient imbalances. One potential solution is to remove forages from the field as hay or silage. Our objective was to investigate the uptake of nutrients by a cool season perennial and warm season annual hay crop to determine ifthey could be used as a viable nutrient removal tool. Treatments included poultry litter applied to orchardgrass and sudangrass at the recommended nitrogen rate, at the recommended phosphorus rate plus supplemental inorganic nitrogen, at the recommendedphosphorus rate, and inorganic fertilizer. Forage samples were collected prior to each harvest and analyzed for CP, P, Cu, Zn, and Fe. The treatments affected orchardgrass and sudangrass differently. There were differences in CP, Zn, P, and yield in sudangrass while P, Fe, Zn, Cu, and yield showed treatment effects in orchardgrass. Phosphorus concentration in orchardgrass with litter applied at the recommended N rate was similar to those with litter applied at the recommended P rate and those receivinginorganic fertilizers. In sudangrass, the lowest concentration was in forages fertilized with inorganic fertilizer. Copper concentration in sudangrass was not affected by treatment; however, litter treated plots of orchardgrass had higher Cu concentration than plots fertilized with inorganic fertilizer. Litter applied at the recommended P rate had the lowest yields, however, the yield advantage provided by other treatments was small. Our findings indicate that application of poultry litter based on a recommended P rate followed by addition of supplemental inorganic N could, in some instances, lower the accumulation of certain minerals in the soil, reduce the likelihood of adverse environmental impacts, and provide comparable yield to higher litter application rates.
机译：在过去的几年里在肯塔基州肉鸡产量的增加，越来越多的农民开始转向鸡粪作为其饲料便宜的营养源。然而，持续的垃圾应用程序可以导致营养集结，可能会导致水体污染和营养失衡。一个可能的解决方案是从字段中删除作为牧草干草或青贮饲料。我们的目标是通过一个凉爽的季节常年和暖季一年干草作物调查营养素的摄取，以确定ifthey可以作为一种可行的脱氮除磷工具。包括家禽垃圾的处理施加到鸭茅和苏丹草在推荐的氮气速率，以推荐的磷速率加补充无机氮，在recommendedphosphorus速率，和无机肥料。饲料样品之前每次收获，收集和CP，P，铜，锌，和Fe进行分析。该治疗影响鸭和苏丹草不同。有在苏丹草在CP，锌，P，和产量的差异而P，铁，锌，铜，和屈服显示在鸭茅治疗效果。与垫料鸭茅磷浓度施加在推荐的N值是相似的那些垃圾以推荐的磷量和那些receivinginorganic肥料施用。在苏丹草，最低浓度是在与无机肥料施肥牧草。在苏丹草铜浓度并没有受到处理;然而，鸭茅的垃圾处理的样具有较高的Cu浓度比用无机肥料施肥地块。在推荐的磷量施加垫料具有最低的收率，然而，由其它治疗方法提供的产量优势是小的。我们的研究结果表明基于一个推荐的磷量，随后加入补充无机氮可能，在某些情况下，降低土壤中的某些矿物质的积累家禽垫料该应用程序，减少对环境的不利影响的可能性，并提供相当的收益率较高的垃圾应用率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号