ATMOSPHERIC NITROGEN FOR FERTILIZING PURPOSES
نویسندگان
چکیده
منابع مشابه
assessment of nitrogen fertilizing of wheat farms in gorgan region
precise application of the n fertilizer rate is critical to achieve maximum yield. in major regions, empirical methods were used for determining n fertilizer requirement. these methods cannot take into account variation in management and environmental conditions on determining fertilizer requirement. crop simulation models can provide an alternative means of determining the optimum crop n requi...
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Operational mapping of atmospheric nitrogen deposition to the Baltic Sea O. Hertel, C. Ambelas Skjøth, J. Brandt, J. H. Christensen, L. M. Frohn, and J. Frydendall National Environmental Research Institute, Department of Atmospheric Environment, P.O. Box 358, Frederiksborgvej 399, 4000 Roskilde, Denmark Received: 17 October 2002 – Accepted: 27 June 2003 – Published: 8 July 2003 Correspondence t...
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Nitrogen is the most common element in Earth’s atmosphere and also appears to be present in significant amounts in the mantle. However, its long-term cycling between these two reservoirs remains poorly understood. Here a range of biotic and abiotic mechanisms are evaluated that could have caused nitrogen exchange between Earth’s surface and interior over time. In the Archean, biological nitroge...
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Isolation of Pleuropneumonialike Orgauisms from the Throats of Hlumans: Paul F. Smith and Harry E. Morton 623 Atmospheric Nitrous Oxide and the Nitrogen Cycle: Arthur Adel _ 624 An Analog of Vitamin B12: R. P. Buhs, E. G. Newetead, and N. R. Trenner _ 625 Pulmonary Edema and Hemorrhage Induced by Hypothalamic Lesions in Rats: J. E. Gamble and Harry D. Patton ________ 626 Physiological Availabil...
متن کاملFertilizing Options for Stockpiling Forages
Objective Many livestock owners use the granular form of urea nitrogen during late summer and fall trying to increase forage growth for “stockpiled” forage. Livestock are then allowed to graze the “stockpile” at a later date when other forages no longer are growing or available. This practice extends the grazing season and reduces the need for higher priced stored feed. Urea is a common nitroge...
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ژورنال
عنوان ژورنال: Science
سال: 1904
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.19.474.197