An evaluation of the Olsen test as a measure of plant-available phosphorus in grassland soils derived from basalt parent material     

A.A.W. Bell  J.S. Bailey  R.V. Smith 《Soil Use and Management》2005,21(3):322-329

Abstract. Anecdotal and circumstantial evidence have suggested that the Olsen test underestimates plant-available phosphorus (P) in basaltic soils in Northern Ireland. Therefore, the ability of this test to predict plant-available P in basaltic (and non-basaltic) soils was investigated by regressing Olsen-P data against herbage P indices calculated from plant tissue test data using the diagnosis and recommendation integrated system. The average Olsen-P concentration for a range of fields situated on basaltic soils was considerably lower than the average Olsen-P concentration for a range of fields situated on non-basaltic soils, and yet mean sward P status, as given by the herbage P indices, was similar for both groups of fields. Herbage P indices were also much better correlated with Olsen-P measurements in non-basaltic soils than in basaltic soils. Furthermore, at low Olsen-P values (≶9mgPL⁻¹) some swards on basaltic soils were genuinely deficient in P, while others were sufficient or even in surplus for this nutrient. The results confirm that Olsen-P is inadequate as a predictor of plant-available P in basaltic soils. It is concluded that an alternative soil test is needed to provide a reliable assessment of plant-available P in basaltic soils, to prevent overuse of fertilizer and manure P and to minimize the amounts of P entering local watercourses.  相似文献   

Some Comments on Gerechte Designs     

R. A. Bailey    J. Kunert  R. J. Martin 《Journal of Agronomy and Crop Science》1991,166(2):101-111

In a companion paper we derived the correct analysis for gerechte designs with uncorrected errors. Here we show that this correct analysis cannot be justified by the usual randomization argument. However, when the regions are rectangular there is a randomization procedure which validates an analysis with three separate error terms. We also outline other developments in design and analysis that may be more satisfactory.  相似文献   

Outcome of limb amputations in wapiti: 13 cases (1995-2001).          下载免费PDF全文

T D Butt  A M Cruz  J V Bailey    W H Crawford 《The Canadian veterinary journal. La revue veterinaire canadienne》2001,42(12):936-939

The object of this investigation was to determine the outcome of limb amputation in wapiti. Medical records of 13 wapiti that underwent limb amputation were reviewed to determine age, weight, sex, injury preceding amputation, limb amputated, amputation location, length of hospital stay, complications, and outcome. Ages ranged from 3 months to 8 years and weights from 70 kg to 280 kg. All animals were female. Eleven animals sustained catastrophic long bone fractures prior to amputation. Five animals had front limb amputations and 8 had hind limb amputations. Of these animals, 1 with a front limb amputaiton and 5 with hind limb amputations survived. Postsurgical inability to stand is associated with hospitalization of > 1 day. Of the 13 wapiti reviewed, 5 with hind limb amputations have produced and reared offspring. Hind limb amputation can be considered a viable alternative to euthanasia when catastrophic orthopedic injuries occur in female wapiti.  相似文献   

真核表达载体构建表达ＰＲＶ闽Ａ株gE基因表位抗原编码区片段的重组质粒   总被引：2，自引：1，他引：1  

敖敬群  杨林  王章  娄高明  杜伟贤 《中国预防兽医学报》2001,23(1):14-16

根据伪狂犬病病毒闽Ａ株gE基因表位抗原编码区的序列与身份种真核表达载体pPICZaA、pAcGP67A序列与特性分别设计了两对ＰＣＲ引物。通过ＰＣＲ方法扩增到了两端具有不同酶切位点的gE基因表位抗原编码片段。将这２个片段分别克隆到pPICZaA与pAcGP67A载体，转化大肠杆菌ＴＯＰ１０菌档及ＸＬ１－Ｂlue菌株，获得了含伪狂犬病病毒闽Ａ株gE基因表位抗原编码区的重组质粒pICZaA-FS与pAcGP67A-FS。序测定结果显示两个重组质粒中插入片段的大小与方向均正确。  相似文献   

Herniation of small intestine through the right lateral ligament of the bladder in a bull     

Trent AM  Bailey JV 《The Canadian veterinary journal. La revue veterinaire canadienne》1985,26(1):16-19

A three year old Charolais bull was examined because of anorexia and depression of five days duration and progressive abdominal distention. Intestinal obstruction was diagnosed. A right flank celiotomy allowed diagnosis and correction of a herniated jejunoileal loop through the right lateral ligament of the bladder. An annular constriction located in mid-ileum was by-passed by ileocecal side-to-side anastomosis. The bull's appetite and fecal production returned to normal within 72 hours of surgery. Ten months following discharge the bull was reported to be well.  相似文献   

Barriers to and enablers of implementing antimicrobial stewardship programs in veterinary practices          下载免费PDF全文

Laura Y. Hardefeldt  J. R. Gilkerson  H. Billman‐Jacobe  M. A. Stevenson  K. Thursky  K. E. Bailey  G. F. Browning 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2018,32(3):1092-1099

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Equine pituitary pars intermedia dysfunction: current understanding and recommendations from the Australian and New Zealand Equine Endocrine Group          下载免费PDF全文

CJ Secombe  SR Bailey  MA de Laat  KJ Hughes  AJ Stewart  JM Sonis  RHH Tan 《Australian veterinary journal》2018,96(7):233-242

The purpose of this article is to provide a review of the current knowledge and opinions about the epidemiology, clinical findings (including sequelae), diagnosis, treatment and monitoring of equine pituitary pars intermedia dysfunction, particularly in the Australian context. This information and the recommendations provided will assist practitioners in making informed decisions regarding the diagnosis and management of this disorder.  相似文献   

Re: Recommendations from the Australian and New Zealand Equine Endocrine Group and the interpretation of plasma endogenous ACTH concentrations for the diagnosis of pituitary pars intermedia dysfunction (PPID)          下载免费PDF全文

Associate Professor Cristy Secombe  Professor Simon Bailey  Dr Melody de Laat  Associate Professor Kristopher Hughes  Dr Allison Stewart  Dr Jenny Sonis  Dr Rachel Tan 《Australian veterinary journal》2018,96(9):319-319

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苦瓜对8种蔬菜的化感作用     

苗朔  敖苏  颜仕龙  袁洋  朱朝华  范志伟 《中国蔬菜》2017,1(2):55

以8种海南主要栽培的蔬菜为受体,采用室内生测法研究苦瓜(Momordica charantiaL.)茎叶水浸提液对其化感作用。结果表明:苦瓜茎叶水浸提液对8种受体植物的种子萌发和幼苗生长均有一定的化感效应,且化感作用方式和强度在受体间及指标间存在显著差异;化感作用综合效应的平均值大小顺序为:辣椒黄瓜豇豆菜豆萝卜樱桃番茄胡萝卜番茄。试验结果为建立合理的栽培制度提供了理论和试验依据。  相似文献   

Assessing the effectiveness of manure export plus intensive silage cropping for lowering the Olsen‐P status of P‐enriched grassland          下载免费PDF全文

J. S. Bailey 《Soil Use and Management》2015,31(4):438-439

A substantial proportion of farmed grassland soils in Northern Ireland (NI) are overly enriched with P and pose a risk to water quality. To address this problem, manure could be exported rather than recycled to P‐enriched land and the latter intensively cropped with grass silage to deplete soil P. To assess the efficacy of such a strategy, a P‐ and K‐enriched grassland site was intensively cropped over a 6‐yr period with fertilizer N alone supplied to support silage growth. By year 6, soil P had declined from index 5 to index 3, and it was estimated that two more years of this management may bring it into the target index 2 range. Soil K, however, declined rapidly from index 4 to index 1 in just 4 yr, with the result that grass production became limited by K deficiency. It was concluded that nonrecycling of manure to P‐enriched grassland under silage management is probably the most effective strategy for lowering soil P status, but care must be taken to prevent K deficiency occurring.  相似文献