NONDESTRUCTIVE ESTIMATION OF LEAF NUTRIENT CONCENTRATIONS IN EUCALYPTUS PLANTATIONS
نویسندگان
چکیده
منابع مشابه
Photographic exposure affects indirect estimation of leaf area in plantations of Eucalyptus globulus Labill
Calibrations of indirect methods for estimating leaf area are usually based on small data sets and are often species-specific and may even be stand-specific. We used the Licor LAI-2000 plant canopy analyser (PCA) as a reference to calibrate leaf area measurements based on hemispherical photography. Ten stands of 6–8 year-old, plantation grown Tasmanian bluegum (Eucalyptus globulus Labill.) in W...
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Commercial Eucalyptus plantations provide an important source of hardwood for forestry industries, worldwide. Several species of Mycosphaerella are associated with a destructive Eucalyptus leaf disease known as Mycosphaerella Leaf Blotch (MLB). During 2000, a survey was undertaken in several commercial Eucalyptus growing areas of South Africa to determine the identity of the Mycosphaerella spp....
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Exotic tree plantations may serve as catalysts for native forest regeneration in agriculturally degraded landscapes. In 2001, we evaluated plant species regeneration in the understory of a 7-year-old experimental Eucalyptus saligna forest in Hawaii approximately 1 year after the cessation of 5 years of herbicide. These forests were organized in a 2 3 2–factorial design of planting density (1 3 ...
متن کاملObserved and modelled leaf area index in Eucalyptus globulus plantations: tests of optimality and equilibrium hypotheses.
This paper reports on variation in leaf area index (L) in five Eucalyptus globulus Labill. plantations in response to application of nitrogen, thinning at age 2 years and variation in climate wetness index (the ratio of rainfall to potential evaporation). Observed L is compared with: (i) L predicted to optimize net primary productivity for a given average annual temperature, annual water use an...
متن کاملStrategies to Combat Mycosphaerella Leaf Disease in Eucalyptus globulus Plantations in Northern Spain
Eucalyptus globulus is widely planted in temperate regions to produce pulp for its high performance but few studies of the impact of Mycosphaerella Leaf Disease (MLD) have been documented. This study aimed to explore and provide knowledge on disease in the management of young Eucalyptus globulus stands in the north of Spain. The influences of subspecies, cloning, and fertilization on the degree...
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ژورنال
عنوان ژورنال: CERNE
سال: 2019
ISSN: 2317-6342,0104-7760
DOI: 10.1590/01047760201925022631