منابع مشابه
Notes on Sugarcane Trash Caterpillars (noctuidae) and Effects of Defoliation on the Crop
At least 7 species of Noctuid moths have been reared from caterpillars collected beneath trash in cane fields, and some at least feed at night on leaves of young ratooning sugarcane, the chief offender being Mythimna phaea Hamps. Feeding appeared to be initiated by onset of darkness, but a reduction in numbers feeding occurred before dawn. Natural enemies included 6 Tachinid flies, an Ichneumon...
متن کاملMapping Defoliation with Lidar
The aim of this article is to present a concept of using airborne laser scanning (LIDAR), with one scan only, to map defoliation as a forest health variable. The idea is to apply two independent algorithms on the LIDAR data set, to produce both actual and expected leaf area index (LAI) values for every cell in a grid over the area. LAI is estimated based on laser pulse penetration through the c...
متن کاملGrain Amaranths Are Defoliation Tolerant Crop Species Capable of Utilizing Stem and Root Carbohydrate Reserves to Sustain Vegetative and Reproductive Growth after Leaf Loss
Tolerance to defoliation can be defined as the degree to which productivity is affected by photosynthetic area reduction. This trait was studied in grain amaranth (Amaranthus cruentus and A. hypochondriacus), which are considered to be a highly defoliation-tolerant species. The physiological and biochemical responses to increasing levels of mechanical leaf removal up to total defoliation were q...
متن کاملCrop Ontology: Vocabulary For Crop-related Concepts
A recurrent issue for data integration is the lack of a common and structured vocabulary used by different parties to describe their data sets. The Crop Ontology (www.cropontology.org) project aims to provide a central place where the crop community can gather to generate such standardized vocabularies and structure them into ontologies. Having standardized ontologies opens the world of the Sem...
متن کاملGrowth and Physiological Responses of Tundra Plants to Defoliation
In addition to extreme abiotic conditions, biotic factors such as grazing influence the growth of tundra plants. Strategies of carbon assimilation, accumulation, and utilization must not only satisfy the requirements of a rigorous physical environment but also must simultaneously adjust to the impacts associated with herbivory. Representatives of four growth forms found in northern Alaska (a de...
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ژورنال
عنوان ژورنال: Proceedings of the New Zealand Weed Control Conference
سال: 1958
ISSN: 0370-0968,0370-0968
DOI: 10.30843/nzpp.1958.11.7529