Groundcover Management System and Nutrient Source Impact Physical Soil Quality Indicators in an Organically Managed Apple Orchard

In March 2006, four groundcover management systems (GMS) and two nutrient sources (NS) were implemented for their ability to alter the soil physical condition of a newly established, organically managed apple (Malus x domestica Borkh.) orchard. Annual applications of municipal green compost (GC), shredded office paper (SP), wood chips (WC), and mow-blow (MB) grass mulch were utilized as GMS, and NS supplied to trees were from composted poultry litter (PL), a commercial organic fertilizer (CF), or an untreated control (NF) in a 4x3 factorial study. An established, conventionally-managed orchard was located adjacent to the organic research orchard on the same silt loam soil. Physical soil characteristics were measured from the conventional orchard providing a qualitative comparison of orchard management systems. Soil organic matter (SOM) concentration averaged 1.5% from 0 - 10 cm depth across all treatments at orchard establishment (2006). By 2012, SOM increased to 5.6% in GC, and SOM in MB, SP, and WC increased to 2.6%, 3.0%, and 3.2%, respectively. Commercial organic fertilizer and NF treatments with GC resulted in greatest SOM increases. The change in SOM impacted physical soil characteristics. Mow-blow treatments provided the least measured change in soil quality and served as a comparator to other GMS not measured in 2006. Significant increases in estimated plant available water, water stable aggregate formation, water infiltration rate, and saturated hydraulic conductivity were observed in GC. No differences were found in bulk density (BD) in 2006 from 0 - 6 cm, but BD decreased in following years for all GMS. All GMS treatments increased TC and TN concentrations from 2006 to 2011 in the top 7.5 cm soil layer, most significantly in GC. The greatest increases in TC and TN contents from 2006 were also observed in the GC treatments. Compared to the conventional orchard, GC most improved soil quality. Collectively, the soil quality indicators measured in this study show the addition of GMS and organic NS has improved soil quality since organic orchard establishment, and are a tangible means of meeting NOP requirements for improving soil quality in Ozark Highlands apple orchards concurrent with production of certified organic crops

Evaluation of cover crops in high tunnel vegetable rotation

Organic vegetable production within high tunnels allows for an extended growing season, crop protection, and environmental control. The USDA National Organic Program (NOP) standards mandate evidence that the soil has been maintained and improved over the course of production. Previous studies have indicated the potential of cover crops for reducing competitive vegetation, and improving soil quality, thus resulting in greater plant growth, nutrient uptake, and yield. However, there has been limited work in the confines of high tunnels as part of a tunnel-system rotation. Ten nitrogen-fixing and ten non-legume cover crops were established under a high tunnel and evaluated for their effects on the yield of ‘De Cicco’ broccoli (Brassica oleracea L. var. italica) and ‘Champion’ collards (Brassica oleracea L. var. acephala), aboveground biomass, and plant C and N contents. All treatments received recommended levels of appropriate certified organic fertilizers, water status was maintained, and vegetables received standard organic maintenance for insects and disease. The cover crops hairy indigo (Indigofera hirsuta L.), Catjang cowpea (Viana unguicalata L.), and Sunn hemp (Crotalaria juncea L.) consistently produced higher yields than Tifleaf III hybrid pearl millet (Pennisetum glaucum L.), Dairymaster brown midrib (BMR) hybrid grain sorghum (Sorghum spp.), and Wild Game Food sorghum (Sorghum bicolor L.). Nitrogenfixing legumes produced horticulturally significantly higher yields than the non-nitrogen-fixing grass species. This experiment demonstrated that not all cover crops are equal; they created variation in response. Cover crops provide a viable option for organic producers to maintain or improve soil quality over the course of production

The late Roman field army in Northern Britain? Mobility, material culture and multi-isotope analysis at Scorton (N. Yorks)

At Hollow Banks Quarry, Scorton, located just north of Catterick (N Yorks.), a highly unusual group of 15 late Roman burials was excavated between 1998 and 2000. The small cemetery consists of almost exclusively male burials, dated to the fourth century. An unusually large proportion of these individuals was buried with crossbow brooches and belt fittings, suggesting that they may have been serving in the late Roman army or administration and may have come to Scorton from the Continent. Multi-isotope analyses (carbon, nitrogen, oxygen and strontium) of nine sufficiently well-preserved individuals indicate that seven males, all equipped with crossbow brooches and/or belt fittings, were not local to the Catterick area and that at least six of them probably came from the European mainland. Dietary (carbon and nitrogen isotope) analysis only of a tenth individual also suggests a non-local origin. At Scorton it appears that the presence of crossbow brooches and belts in the grave was more important for suggesting non-British origins than whether or not they were worn. This paper argues that cultural and social factors played a crucial part in the creation of funerary identities and highlights the need for both multi-proxy analyses and the careful contextual study of artefacts

All This Stuff : Archiving the Artist

"All This Stuff: Archiving the Artist explores the documentation of the creative process. From their different viewpoints, fifteen leading artists, archivists and art historians, reflect on ways that artists and archivists deal with 'all this stuff', and how artists manage and relate to their own archives" -- p. [4] of cover

Patients' and healthcare professionals' views of cancer follow-up: systematic review

Background Cancer follow-up places a significant burden on hospital outpatient clinics. There are increasing calls to develop alternative models of provision. Aim To undertake a systematic review of qualitative studies examining patients' and healthcare professionals' views about cancer follow-up. Design of study Systematic review. Setting Primary and secondary care. Method Comprehensive literature searches included: 19 electronic databases, online trial registries, conference proceedings, and bibliographies of included studies. Eligible studies included qualitative studies examining patients' and healthcare professionals' views of cancer follow-up. Studies of patients with any type of cancer, considered free of active disease, or no longer receiving active treatment were included. Findings were synthesised using thematic analysis. Results Nineteen studies were included; seven were linked to randomised controlled trials. Eight studies examined the views of healthcare professionals (four of which included GPs) and 16 examined the views of patients. Twelve descriptive themes were identified, from which 12 perceived implications for practice were derived. Most themes related to conventional follow-up in secondary care. Some views concerning other models of care were based on participants' ideas, rather than experiences. Conclusion Patients' main concern is recurrent disease, and they find regular follow-up, expertise of specialists, and quick access to tests reassuring. Information regarding the effectiveness of follow-up is not given to patients who also have unmet information needs, which would help them to cope and be more involved. Continuity of care, unhurried consultations, and psychosocial support are important, but sometimes lacking in secondary care. GPs are thought to be unwilling and to have insufficient time and expertise to conduct follow-up

Do we need gastric acid?

Evidence from comparative anatomy and physiology studies indicates that gastric acid secretion developed during the evolution of vertebrates approximately 350 million years ago. The cellular mechanisms that produce gastric acid have been conserved over the millennia and therefore proton pump inhibitors have pharmacological effects in almost all relevant species. These observations suggest that gastric acid provides an important selective advantage; however, in modern-day humans the need for gastric acid can be questioned in light of the widespread use of safe and effective pharmacologic acid suppression. The Kandahar Working Group addressed questions concerning the need, production and effects of gastric acid, specifically: (1) motility in the upper gastrointestinal (GI) tract; (2) neuroendocrine factors; (3) digestive and mucosal processes; (4) microbiology, and (5) central processes and psychological involvement. We addressed each topic with the individual models available to answer our questions including animal versus human studies, pharmacologic, surgical as well as pathophysiologic states of acid suppression