ABSTRACT
First-generation cabbage maggot, Delia radicum (L.) (Diptera: Anthomyiidae), can cause extensive damage to newly transplanted brassica crops. This study investigated the use of relay cropping, a form of intercropping that involves overlapping two crops in the same field for a short period, as a means to 1) reduce first-generation D. radicum egg numbers by disrupting female host finding and 2) minimize yield loss by reducing the time that crops overlap. Because of the high incidence of two other Delia species, Delia platura (Meigen) and Delia florilega (Zetterstedt), treatment effects on these insects also were considered. In both years of the study (2003 and 2004), there were fewer D. radicum eggs collected from the base of cauliflower, Brassica oleracea variety botrytis, plants relay cropped with lettuce, Lactuca sativa L., than in monoculture. D. platura/D. florilega also laid fewer eggs on cauliflower in the relay crop than in monoculture in 2003, but in 2004 the opposite was true, there were more D. platura/D. florilega eggs laid on the relay-cropped cauliflower. After peak D. radicum oviposition, the lettuce was harvested. Cauliflower curd weights and diameters were comparable between treatments in both years. Plant loss because of D. platura/ D. florilega feeding in the 2004 relay-cropped plots resulted in reduced yields in these plots compared with the monoculture. Although further investigation is needed into the effects of relay cropping on other pests within this system, this is the first study to demonstrate that relay cropping can reduce egg laying by D. radicum at the scale studied while minimizing competition between component crops for key resources.
Subject(s)
Brassica/parasitology , Crops, Agricultural/parasitology , Diptera/physiology , Lactuca/parasitology , Pest Control/methods , Animals , Brassica/growth & development , Crops, Agricultural/growth & development , Larva/physiology , Lactuca/growth & development , Ovum/physiology , Population DensitySubject(s)
Adipose Tissue/transplantation , Breast/surgery , Female , Humans , Postoperative ComplicationsABSTRACT
High pressure injection injury of the hand is an uncommon condition demanding early recognition and prompt surgical intervention. These three case reports illustrate the varied aetiology, pathogenesis and outcome of this condition.
Subject(s)
Finger Injuries , Thumb/injuries , Accidents, Occupational , Adult , Amputation, Surgical , Emergencies , Finger Injuries/etiology , Finger Injuries/surgery , Humans , Male , Middle Aged , Pressure/adverse effectsABSTRACT
A sixteen-year-old male presented with pain and swelling of the distal phalanx of his right middle finger. X-ray examination demonstrated an osteolytic lesion which at operation was found to be an osteoid osteoma.
Subject(s)
Bone Neoplasms , Fingers , Osteoma, Osteoid , Adolescent , Humans , MaleABSTRACT
Infection of the flexor tendon sheath and proximal interphalangeal joint by Mycobacterium marinum is described. The characteristic features of this unusual infection are delineated.
Subject(s)
Coxsackievirus Infections/drug therapy , Hand, Foot and Mouth Disease/drug therapy , Mycobacterium Infections/drug therapy , Occupational Diseases/drug therapy , Adult , Female , Fingers/drug effects , Humans , Methylprednisolone/therapeutic use , Microbial Sensitivity TestsSubject(s)
Fracture Fixation , Fractures, Open/surgery , Surgical Flaps , Tibial Fractures/surgery , Accidents, Traffic , Adult , Female , Humans , Leg Injuries/surgery , Male , Middle AgedABSTRACT
In a retrospective survey over a three-year period there were found 199 patients with keratoacanthoma among 3,180 patients with malignant skin disease. The clinical features of the series are presented, with particular attention to the diagnostic error. Amongst experienced clinicians there was an 8.5% error in calling an invasive squamous cell lesion a keratoacanthoma. Pertinent features of the clinical nature of keratoacanthoma with particular reference to immunological surveillance are discussed.
