Beni Kirshner

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Tests or measures in clinical medicine or the social sciences can be used for three purposes: discriminating between subjects, predicting either prognosis or the results of some other test, and evaluating change over time. The choices made at each stage of constructing a quality of life index will differ depending on the purpose of the instrument. We(More)
The different measurement properties necessary for instruments whose goal is to detect differences between subjects at a single point in time (discriminative instruments) and those whose goal is to detect longitudinal change within subjects (evaluative instruments) is becoming increasingly recognized. Up to now, requirements for evaluative instruments have(More)
Two biocontrol preparations were tested for their ability to control Sphaerotheca fusca and Botrytis cinerea on greenhouse cucumber. Trichoderma harzianum T39 (TRICHODEX) spray reduced powdery mildew severity by up to 97% but its efficacy declined to 18–55% control as the epidemic progressed. Unlike on young leaves, on older leaves the control of powdery(More)
This paper reviews issues related to defining and demonstrating therapeutic equivalence. A set of guidelines are proposed to critically review clinical trials to determine whether there is sufficient evidence to conclude that an experimental therapy is therapeutically equivalent to a standard one. These guidelines include criteria for assessing whether(More)
Small spots are a newly-defined manifestation ofBotrytis cinerea infection on phylloclades of ruscus. The dark, water-soaked spots encircled by a faint halo, which are found on young phylloclades, become brown lesions later but do not grow in size. Control of all symptoms caused byB. cinerea on ruscus (Ruscus hypoglossum L.),i.e., phylloclade rot or(More)
The most serious symptom of Botrytis cinerea in tomatoes grown in greenhouses is stem rotting. Lesions on the stem may result from direct infection or from progression of the rot along infected leaves, until infection approaches the stem. In a set of experiments conducted in commercial greenhouses, an experimental greenhouse and growth chambers, the(More)
Leaf populations ofTrichoderma were studied on tomato, pepper and geranium plants incubated under various conditions. Treatments involved high (>90%) or lower (75–85%) relative humidity (r.h.), temperatures of 15±3°C or 25±3°C, and soil fertilization with formulations of 2,2,5%, 3,3,8% or 5,3,8% NPK. The size of populations on leaves treated with the(More)
Biological control of grey mould caused byBotrytis cinerea is achieved byTrichoderma harzianum under commercial greenhouse conditions. The establishment of populations ofTrichoderma in the phylloplane of treated plants was studied. After several applications of a formulated preparation, a level of 105 cfu per leaf was established. High relative humidity(More)
1 The Minerva Otto Warburg Center for Biotechnology in Agriculture and The Robert H. Smith Institute for Plant Science and Genetics in Agriculture, The Hebrew University of Jerusalem, Rehovot 76100, Israel 2 Department of Virology, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel 3 Plant Protection and Inspection Service, Ministry(More)