Improved estimation of nitrogen uptake in grasslands using the nitrogen dilution curve
نویسندگان
چکیده
منابع مشابه
Study of genetic diversity in bread wheat germplasm using nitrogen uptake and nitrogen use efficiency characteristics
In order to evaluate the traits related to nitrogen utilization and to identify the superior genotypes, 33 bread wheat landraces along three check cultivars of Chamran and Koohdasht (from Iran) and Gobustan (from the Republic of Azerbaijan) were studied in simple lattice statistical design with two replications under two treatments of non-usage and application of 200 kg/ha ammonium nitrate fert...
متن کاملO'connor: Nitrogen Balances in Grasslands Nitrogen Balances in Natural Grasslands and Extensively-managed Grassland Systems
An approach is outlined for synthesising current understanding of nitrogen dynamics in natural grasslands and extensively managed grassland systems. The increasing complexity of models is illustrated from recent literature, first conceptualising and eventually process-simulating the dynamics of nitrogen, especially in the soil sub-systems of grasslands. Some comparisons are made between New Zea...
متن کاملDevelopment of a Critical Nitrogen Dilution Curve of Double Cropping Rice in South China
The concept of critical nitrogen (Nc) concentration can be implemented to diagnose in-season plant nitrogen (N) status for optimizing N fertilizer management. The Nc dilution curves have been established for rice (Oryza sativa L.) grown in different climatic regions, yet no attempt has been made to develop the Nc dilution curve for double cropping rice regions. This study was undertaken to deve...
متن کاملComparison of inorganic nitrogen uptake dynamics following snowmelt and at peak biomass in subalpine grasslands
Subalpine grasslands are highly seasonal environments and likely subject to strong variability in nitrogen (N) dynamics. Plants and microbes typically compete for N acquisition during the growing season and particularly at plant peak biomass. During snowmelt, plants could potentially benefit from a decrease in competition by microbes, leading to greater plant N uptake associated with active gro...
متن کاملDevelopment of a Critical Nitrogen Dilution Curve Based on Leaf Area Duration in Wheat
Precise quantification of plant nitrogen (N) nutrition status is essential for crop N management. The concept of critical N concentration (Nc) has been widely used for assessment of plant N status. This study aimed to develop a new winter wheat Nc dilution curve based on leaf area duration (LAD). Four field experiments were performed on different cultivars with different N fertilization modes i...
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ژورنال
عنوان ژورنال: Agronomy for Sustainable Development
سال: 2015
ISSN: 1774-0746,1773-0155
DOI: 10.1007/s13593-015-0321-2