Nitrogen Uptake by Citrus Leaves
نویسندگان
چکیده
منابع مشابه
Soil temperature, nitrogen concentration, and residence time affect nitrogen uptake efficiency in citrus.
We try to elucidate which environmental and soil factors control nitrogen uptake efficiency in citrus. Effects of residence time and nitrogen (N) concentration (three 500-mL applications of 7 mg N L(-1), representative of reclaimed water used for citrus irrigation in central Florida, or one 150-mL application of 70 mg N L(-1)) on nitrogen uptake efficiency (NUE) of young citrus seedlings were s...
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Correlations between extractable leaf chlorophyll (Chl) concentration and portable, nondestructive leaf “greenness” meter readings imply that such estimates can be used as surrogate measurements of leaf nitrogen (N) status. However, few studies have actually found a direct relationship between Chl meter readings and leaf N. We evaluated the utility of two handheld transmittance-based Chl conten...
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To elucidate a mechanistic basis for the reductions in chlorophyll (Chl) and inhibition of CO2 assimilation (ACO2 ) in nitrogen (N) starved citrus leaves, changes in Chl concentration and net gas exchange rates were examined together with chloroplast ultrastructure in N-deficient (125 mmol N m−2) and N-sufficient (286 mmol N m−2) citrus leaves. Two-year-old ‘Hamlin’ orange (Citrus sinensis L.) ...
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Languishing for many years in the shadow of plant inorganic nitrogen (N) nutrition research, studies of organic N uptake have attracted increased attention during the last decade. The capacity of plants to acquire organic N, demonstrated in laboratory and field settings, has thereby been well established. Even so, the ecological significance of organic N uptake for plant N nutrition is still a ...
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ژورنال
عنوان ژورنال: Journal of the American Society for Horticultural Science
سال: 1995
ISSN: 0003-1062,2327-9788
DOI: 10.21273/jashs.120.3.505