Trapping and Other Strategies for Control of Cucumber Beetle in Muskmelon

Spotted and striped cucumber beetles (Diabrotica undecimpunctata howardi and Acalymma vittata) that vector a bacteria that causes bacterial wilt in cucurbits are the major pest in Iowa muskmelon fields. Growers currently spray insecticides to control these insects on a one- to two-week preventive schedule. Use of large amounts of chemical can be expensive and damaging to beneficial pollinators and the environment. We investigated the success of the prototype Trece trap-and-bait system—soon to be Organic Materials Review Institute approved— in controlling these beetles. The traps chemically lure beetles to insecticide-treated baits inside the traps, placed some distance away from the muskmelon crop. We also tested three other management methods in combination with the traps: Reemay® row covers, slitted row covers, and transplants treated with BioYield® (rhizobacterial) potting soil

A Call to Arms: Revisiting Database Design

Good database design is crucial to obtain a sound, consistent database, and - in turn - good database design methodologies are the best way to achieve the right design. These methodologies are taught to most Computer Science undergraduates, as part of any Introduction to Database class. They can be considered part of the "canon", and indeed, the overall approach to database design has been unchanged for years. Moreover, none of the major database research assessments identify database design as a strategic research direction. Should we conclude that database design is a solved problem? Our thesis is that database design remains a critical unsolved problem. Hence, it should be the subject of more research. Our starting point is the observation that traditional database design is not used in practice - and if it were used it would result in designs that are not well adapted to current environments. In short, database design has failed to keep up with the times. In this paper, we put forth arguments to support our viewpoint, analyze the root causes of this situation and suggest some avenues of research.Comment: Removed spurious column break. Nothing else was change

A Row Cover and Low-Risk Insecticide Strategy for Cucumber Beetle Management

Spotted and striped cucumber beetles vector a bacterium that causes wilt in cucurbits. These beetles are the major pest of muskmelons in Iowa. We investigated the success of spun-cotton Reemay row covers and several reduced-risk insecticides for management of cucumber beetles and bacterial wilt

A Trap Crop + Insecticide Approach for Cucumber Beetle Management

Spotted and striped cucumber beetles not only cause feeding damage in Iowa cucurbit crops, but vector a bacterium that causes bacterial wilt. ‘Turks Turban,’ an ornamental gourd, was used alone and in combination with carbaryl as a trap crop for these pests in muskmelon. We hypothesized that the beetles would preferentially feed on highly attractive gourd rows interspersed among the melon crop. Insecticide applications to these rows should be more effective than applications to the entire field and may be sufficient for control in the entire field

Maintenance of weight loss and aerobic capacity one year aft er the end of a lifestyle intervention focusing on nutritional guidance and/or exercise

The aims of this study were to: 1) investigate to what extent participants in a lifestyle intervention program, including nutritional guidance and two weekly intensive running sessions, maintain improvements in aerobic capacity and health parameters one year after the end of an intervention; and 2) identify common determinants for those participants who succeeded in weight loss maintenance. A total of 51 participants completed the 33-week intervention. One year after the end of the intervention period (1YA) 34 participants completed anthropometric measurements, 12 (8 women) in the training group (TG) and 22 (13 women) in the nutritional guidance and training group (NTG). A total of 13 participants (9 women) in the TG and 11 participants (7 women) in the NTG completed a 3000 m running test. There were no significant differences in body mass index, 3000 m running time or waist circumference between the groups 1YA. There was however, substantial variation in both groups as to what extent participants had maintained their weight loss. Higher self-efficacy and self-control in relation to food and exercise characterized those who best maintained their weight loss

Trapping and Other Strategies for Cucumber Beetle Management

Spotted and striped cucumber beetles vector a bacterium that causes wilt in cucurbits (plants in the gourd family). These beetles are the major pest of muskmelons in Iowa. We investigated the success of a prototype Trecé brand trap and bait system, soon to be OMRI-approved (Organic Materials Review Institute), that chemically lures beetles to insecticide-treated bait inside a trap some distance away from the muskmelon crop. We also tested the success of Reemay fabric row covers, clear slitted plastic row covers, and BioYield seed treatment. BioYield is a seed inoculant that includes a variety of plant growth-promoting rhizobacteria

Tyrosine and phenylalanine supplementation on Diplodus sargus larvae: effect on growth and quality

27 páginas, 3 figuras, 5 tablas. The definitive version is available at www.blackwell-synergy.comPhenylalanine is the precursor of tyrosine, which is involved in the synthesis of several molecules with key roles in the regulation of metabolism and growth, stress response and pigmentation. In this study, three experimental diets were tested: an amino acid (AA) balanced diet supplemented with phenylalanine, another supplemented with phenylalanine and tyrosine and a non-supplemented AA balanced diet. Rotifers were enriched with liposomes encapsulating free AA in order to obtain a balanced AA profile. The experimental diets resulted in similar larval survival, growth, enzyme activities of AA catabolism and nitrogen excretion in all treatments. High levels of skeletal deformities were registered and significant differences were found between the control and the phenylalanine treatment for the percentage of vertebral compressions in the trunk region of the vertebral column (30% in the control and 5% in the phenylalanine group). A significantly higher survival to a temperature stress test was found for larvae fed the diet supplemented with phenylalanine and tyrosine. The results suggest that supplementation of phenylalanine/tyrosine in fish diets may be useful in order to reduce skeletal deformities and mortalities caused by stress. The present study confirms that AA requirements may be sufficient for covering growth and survival but insufficient to cover other metabolic processes.This work was supported by the project POCI/MAR/61623/2004 – SAARGO, financed by the programme POCI 2010 (FCT, Portugal), which is co-financed by FEDER. FEDER and PN Project AGL2004-06669-C02-01 (Ministry of Education and Science, Spain) are co-financed by FEDER and project –‘Tecnologias de Produção Aquícola’– (22-05-01-FBR-00014 – QCA IIII).Peer reviewe