منابع مشابه
Competition-based Model of Pruning: Applications to Apple Trees
Pruning is widely used in horticulture to control tree shape and balance between vegetative and reproductive growth. Several pruning models have been developed. They are based upon competition mechanisms and transport network to distribute resources to different sinks using either a source-sink allocation function (Borchert and Honda, 1984; de Reffye et al., 1999; Balandier et al., 2000) or an ...
متن کاملErwinia tasmaniensis sp. nov., a non-phytopathogenic bacterium from apple and pear trees.
Bacteria were isolated from flowers and bark of apple and pear trees at three places in Australia. In Victoria, Tasmania and Queensland, strains with white colonies on nutrient agar were screened for dome-shaped colony morphology on agar with sucrose and were found to be closely related by several criteria. The isolates were not pathogenic on apples or pears. They were characterized by a polyph...
متن کاملpatterns and variations in native and non-native interlanguage pragmatic rating: effects of rater training, intercultural proficiency, and self-assessment
although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولFungi associated with apple and pear sooty blotch and flyspeck diseases in Guilan province, Iran
Sooty blotch and flyspeck occur on fruit surfaces and result in economic losses due to less attractive appearance. Sooty blotch fungi form dark mycelial mats whereas flyspeck fungal agents are well characterized with black, sclerotium-like bodies on fruit surface. Whilst more than 60 species have been reported in association with these two fungal diseases, thus far they have not been studied in...
متن کاملPruning Decision Trees and Lists
Machine learning algorithms are techniques that automatically build models describing the structure at the heart of a set of data. Ideally, such models can be used to predict properties of future data points and people can use them to analyze the domain from which the data originates. Decision trees and lists are potentially powerful predictors and embody an explicit representation of the struc...
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ژورنال
عنوان ژورنال: HortTechnology
سال: 1993
ISSN: 1063-0198,1943-7714
DOI: 10.21273/horttech.3.4.464a