Impact of a cultivar mixture on scab, powdery mildew and rosy aphid in an organic apple orchard
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چکیده
منابع مشابه
Predators of the rosy apple aphid, Dysaphis plantaginea (Pass.), in Asturian (NW Spain) apple orchards
Alternative strategies to the common practice of spraying with insecticide in order to control the rosy apple aphid Dysaphis plantaginea (Pass.) (Homoptera: Aphididae) are required. Biological control by natural enemies is a possible tool. In Asturies, despite the tradition of growing local cider apple trees, there are no studies about the community of D. plantaginea predators and their impact ...
متن کاملPOMOSAT - ‘An Orchard System for Monitoring and Modeling Apple Scab (Venturia Inaequalis)’
Apple scab, Venturia inaequalis, is the most serious fungal disease of apple in Romania. The fungus attacks foliage, blossoms and fruits by defoliating trees and rendering fruit unmarketable. In addition, to cultivated apple, apple scab also attacks flowering crabapple, mountain ash and firethorn.. A simple system for apple growers to monitor environmental weather data (temperature and leaf wet...
متن کاملan investigation of the impact of self monitoring on langauge teachers motivational practice and its effect on learners motivation
the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...
Incidence and Severity Relationships of Secondary Infections of Powdery Mildew on Apple
SEEM, R. C., and J. D. GILPATRICK. 1980. Incidence and severity relationships of secondary infections of powdery mildew on apple. Phytopathology 70:851-854. Severity (amount of leaf tissue affected by disease) can be determined relationship remained constant for data from different locations or from incidence (proportion of leaves diseased) for secondary infections of cultivars, but it varied a...
متن کاملBiology of rosy apple
In surveys of apple-production areas east of the Cascade Mountains of Washington, broadleaf plantain, Plantago major Linnaeus (Plantaginaceae) was common throughout while narrowleaf plantain, P. lanceolata Linnaeus, was most common south of Orondo, Douglas County (47.7u latitude). Rosy apple aphid was the most common aphid on these two herbaceous plants; however, colonies were scarce, on only 1...
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ژورنال
عنوان ژورنال: Crop Protection
سال: 2013
ISSN: 0261-2194
DOI: 10.1016/j.cropro.2012.09.014