Urea as a Nitrogen Fertilizer for Great Plains Grasslands
نویسندگان
چکیده
منابع مشابه
Functionalization of softwood kraft lignin for coating urea as highly efficient nitrogen fertilizer
Urea coating has been conducted using polylactic acid (PLA) blended with an industrial softwood kraft lignin. The latter was pre-functionalized via esterification or Mannich reaction. The coated urea becomes therefore a highly effective nitrogen fertilizer due to the controlled release after the coating, the slow release from the organically bound nitrogen structure formed after the Mannich rea...
متن کاملUsing Natural Range of Variation to Set Decision Thresholds: A Case Study for Great Plains Grasslands
Abstract Natural range of variation (NRV) may be used to establish decision thresholds or action assessment points when ecological thresholds are either unknown or do not exist for attributes of interest in a managed ecosystem. The process for estimating NRV involves identifying spatial and temporal scales that adequately capture the heterogeneity of the ecosystem; compiling data for the attrib...
متن کاملA Great Plains Presidential Primary?
This paper examines the feasibility of establishing a regional presidential primary for the Great Plains States. It reviews the introduction ofprimaries for selecting national convention delegates, and the slowness of these states to adopt this method. Further, it surveys the use of the primary in the region, noting the independence ofGreat Plains voters in both the prereform and post-reform pe...
متن کاملContrasting above- and belowground sensitivity of three Great Plains grasslands to altered rainfall regimes.
Intensification of the global hydrological cycle with atmospheric warming is expected to increase interannual variation in precipitation amount and the frequency of extreme precipitation events. Although studies in grasslands have shown sensitivity of aboveground net primary productivity (ANPP) to both precipitation amount and event size, we lack equivalent knowledge for responses of belowgroun...
متن کاملSatellite-based modeling of transpiration from the grasslands in the Southern Great Plains, USA
a Department of Agronomy, Crop, Soil, and Environmental Sciences, Purdue University, West Lafayette, Indiana 47907, USA b Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, New Hampshire 03824, USA c Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907, USA d Colorado State University, Department of Atmospheric Sci...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1974
ISSN: 0022-409X
DOI: 10.2307/3896757