Zobrazeno 1 - 10
of 19
pro vyhledávání: '"H. R. Duke"'
Autor:
R. T. Sparks, R. R. Riggenbach, M. J. Shaffer, Merlin A. Dillon, R. J. Ristau, H. R. Duke, L. M. Kawanabe, Ronald F. Follett, A. Kunugi, Jorge A. Delgado, A. Thompson, K. Thompson, A. Stuebe
Publikováno v:
Communications in Soil Science and Plant Analysis. 32:1321-1354
Cropping systems grown over sandy coarse soils are susceptible to nutrient leaching due to local thunderstorms and irrigation. Additionally, erosion can contribute to removal of nutrients, soil organic matter, and fine particles. Balancing nutrients
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb4dd7c1ba16fe6c8cc737a18daf8441
https://doi.org/10.1081/css-100104115
https://doi.org/10.1081/css-100104115
Publikováno v:
Transactions of the ASAE. 39:39-45
Bromide (Br–) masses recovered by extensive sampling of very fine sandy loam soil to a depth of 1.5 m defined the pattern of soil water movement from irrigated furrows. Wheel traffic occurred in alternate furrows. Bromide was applied in the irrigat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bff7327543880758cf1eb13b179727cf
https://doi.org/10.13031/2013.27478
https://doi.org/10.13031/2013.27478
Autor:
H. R. Duke, W. C. Bausch
Publikováno v:
Transactions of the ASAE. 39:1869-1875
Excessive nitrates in ground and surface water supplies are impacting nitrogen (N) fertilizer management schemes in many agricultural areas. Small amounts of N fertilizer applied “as needed” to a crop have potential for alleviating nitrate leachi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f154786e43c33f7f0ad5717bc8411003
https://doi.org/10.13031/2013.27665
https://doi.org/10.13031/2013.27665
Publikováno v:
Scopus-Elsevier
A linear-move irrigation system was recently installed at the Colorado State University Agricultural Research, Development and Education Center (ARDEC). This machine will be used for small plot studies emphasizing conjunctive management of irrigation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::680966a41a94db26295a273d3fc1bf48
https://doi.org/10.13031/2013.27959
https://doi.org/10.13031/2013.27959
Publikováno v:
Transactions of the ASAE. 36:37-44
Soil consolidation caused by soil-water matric forces was produced in a CO2-filled laboratory apparatus in Poudre sand and Greeley sandy clay loam soils. As matric suction increased intermittently (wetting and draining) from 0 to 1 m of water, both s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76f50fd18f146dfe02dfd8a918db5fa3
https://doi.org/10.13031/2013.28311
https://doi.org/10.13031/2013.28311
Publikováno v:
Transactions of the ASAE. 36:45-50
A physical model was developed in the laboratory to explore the mechanism of consolidation due to soil-water matric suction in two intermittently wetted soils: a micaceous sand (Poudre) and a sandy clay loam (Greeley). Consolidation was more pronounc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a6e68cad471692a84a742d442f27071
https://doi.org/10.13031/2013.28312
https://doi.org/10.13031/2013.28312
Publikováno v:
Transactions of the ASAE. 35:1457-1464
The center pivot irrigator is faced with a problem of determining the appropriate depth of water application to use for management purposes to minimize both yield loss and water quality degradation. The current study builds on the work of Peri, Hart,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ac220ee0ad71db8df60ea03cd99dacc
https://doi.org/10.13031/2013.28753
https://doi.org/10.13031/2013.28753
Autor:
H. R. Duke
Publikováno v:
Transactions of the ASAE. 35:193-199
An infrared thermometer measured the temperature of irrigation water flowing in furrows in fields of corn and onions. The temperature increased as much as 228 C from inflow to downstream ends of the field during mid-afternoon. This temperature increa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09720f178dec14b08c71ec256a1f2407
https://doi.org/10.13031/2013.28587
https://doi.org/10.13031/2013.28587
Publikováno v:
Transactions of the ASAE. 35:1465-1472
The manufacturers of center-pivot systems widely use the Christiansen Uniformity coefficient to compare the irrigation uniformities. This single coefficient compares systems but does not provide a functional relationship of the variation of applied d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91657f6b73fa07086807e8ab8c628628
https://doi.org/10.13031/2013.28754
https://doi.org/10.13031/2013.28754
Publikováno v:
Transactions of the ASAE. 36:795-797
A computer-controlled carriage mechanism and associated software were developed to simulate the movement of a center pivot or linear move irrigation system. The mechanism, which moves along a track, has the capability of moving and positioning a sens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc3046dcfaff6eed3eb8f7d10a59b48a
https://doi.org/10.13031/2013.28400
https://doi.org/10.13031/2013.28400