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Development of a field worthy sensor system to monitor gaseous nitrogen transfer from agricultural cropland

Description: Nitrogen fertilizer accounts for 25 to 33% of the energy requirements in modern crop agriculture in the world today. Energy input for the manufacture of these N fertilizers is in the range of 460 [times] 10[sup 12] Btu per year. Unfortunately, for some N sources up to 70% of this energy in the form of NK can be lost through improper application techniques and poor N management strategies. Anhydrous NH[sub 3] may be lost to the atmosphere during and after placement due to soil conditions placeme… more
Date: November 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wetland vegetation establishment in L-Lake

Description: Wetland vegetation was transplanted from PAR Pond to L-Lake between January and August, 1987. Approximately 100,000 individual plants representing over 40 species were transplanted along the southern shoreline. Three zones of vegetation were created: (1) submersed/floating-leaved, (2) emergent, (3) upper emergent/shrub. During the summers of 1987, 1988, 1989, the Savannah River Ecology Laboratory sampled the vegetation in 54 permanent transects located in planted (N=32) and unplanted areas (N=2… more
Date: July 1, 1990
Creator: Kroeger, S.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Gardening]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 2, 1981, 5:00 p.m.
Duration: 2 minutes 09 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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Methane fluxes from rice fields in China: Spatial and temporal variability and estimates of contributions to the global budget

Description: During the last year we have made considerable progress on determining the emission rate of methane from rice fields in China and the factors that control the emissions. We have completed work on the methane emissions f rom rice fields for a period of four years at Tu Zu near Chengdu in Szchuan province in China. The available data is being entered into the computer. Flux calculations will be available within 2 months. The fluxes of methane from the rice fields and ambient methane concentration… more
Date: September 15, 1992
Creator: Khalil, M.A.K.; Rasmussen, R.A. & Huntzicker, J.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[News Script: Train Derailment]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story of 62 freight cars of the Burlington Northern burned out control for most of the day following a derailment near Childress in Northwest Texas.
Date: January 21, 1974, 8:25 a.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

[News Script: Train Wreck]

Description: Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story of railroads officials who are seeking the cause of a derailment of an 80-car freight train 20 miles south of Childress.
Date: January 21, 1974, 6:30 a.m.
Creator: WBAP-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Script
Partner: UNT Libraries Special Collections
open access

Revegetation of Alaskan coal mine spoils. Progress report

Description: Activities initiated after the start of the revegetation project on Alaskan coal mine spoils on September 1, 1979 have consisted mainly of some fall plantings (dormant seedings) and soil and coal spoil samplings and analyses. Because of the late summer start for the project, only a limited amount of field work could be initiated in plant material studies. This consisted of a fall planting at the Usibelli mine site at Healy in interior Alaska. The planting was intended to test the efficacy of se… more
Date: May 23, 1980
Creator: Mitchell, W W; Mitchell, G A & McKendrick, J D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experiment Station Record, Volume 50, January-June, 1924

Description: Volume provides abstracts of agricultural experiments conducted during the year. Also includes statistics, convention reports, bulletins, bibliographies and listings for Spanish edition publications from the Porto Rico Station. Name and subject indexes start on page 901.
Date: 1924
Creator: United States. Office of Experiment Stations.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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