-
3
-
-
0034892520
-
N-management and crop rotation effects on yield and residual soil nitrate levels
-
A. Bakhsh, R.S. Kanwar, D.L. Karlen, C.A. Cambardella, T.B. Bailey, T.B. Moorman, and T.S. Colvin N-management and crop rotation effects on yield and residual soil nitrate levels Soil Sci. 166 2001 530 538
-
(2001)
Soil Sci.
, vol.166
, pp. 530-538
-
-
Bakhsh, A.1
Kanwar, R.S.2
Karlen, D.L.3
Cambardella, C.A.4
Bailey, T.B.5
Moorman, T.B.6
Colvin, T.S.7
-
4
-
-
0029664056
-
Seasonal changes in flow and nitrate-N loss from subsurface drains
-
D.L. Bjorneberg, R.S. Kanwar, and S.W. Melvin Seasonal changes in flow and nitrate-N loss from subsurface drains Trans. ASAE 39 1996 961 976
-
(1996)
Trans. ASAE
, vol.39
, pp. 961-976
-
-
Bjorneberg, D.L.1
Kanwar, R.S.2
Melvin, S.W.3
-
5
-
-
0032163172
-
Alternative N fertilizer management strategies effects on subsurface drain effluent and N uptake
-
D.L. Bjorneberg, D.L. Karlen, R.S. Kanwar, and C.A. Cambardella Alternative N fertilizer management strategies effects on subsurface drain effluent and N uptake Appl. Eng. Agric. 14 1998 469 473
-
(1998)
Appl. Eng. Agric.
, vol.14
, pp. 469-473
-
-
Bjorneberg, D.L.1
Karlen, D.L.2
Kanwar, R.S.3
Cambardella, C.A.4
-
6
-
-
0032954087
-
Water quality in Walnut Creek Watershed: Nitrate-nitrogen in soils, subsurface drainage water, and shallow groundwater
-
C.A. Cambardella, T.B. Moorman, D.B. Jaynes, J.L. Hatfield, T.B. Parkin, W.W. Simpkins, and D.L. Karlen Water quality in Walnut Creek Watershed: nitrate-nitrogen in soils, subsurface drainage water, and shallow groundwater J. Environ. Qual. 28 1999 25 34
-
(1999)
J. Environ. Qual.
, vol.28
, pp. 25-34
-
-
Cambardella, C.A.1
Moorman, T.B.2
Jaynes, D.B.3
Hatfield, J.L.4
Parkin, T.B.5
Simpkins, W.W.6
Karlen, D.L.7
-
8
-
-
0001564408
-
The effect of farm liquid waste application on tile drainage
-
D.M. Dean, and M.E. Foran The effect of farm liquid waste application on tile drainage J. Soil Water Cons. 47 1992 368 369
-
(1992)
J. Soil Water Cons.
, vol.47
, pp. 368-369
-
-
Dean, D.M.1
Foran, M.E.2
-
9
-
-
0027329207
-
Drying interval effects on runoff from fescue plots receiving swine manure
-
D.R. Edwards, and T.C. Daniel Drying interval effects on runoff from fescue plots receiving swine manure Trans. ASAE 36 1993 1673 1678
-
(1993)
Trans. ASAE
, vol.36
, pp. 1673-1678
-
-
Edwards, D.R.1
Daniel, T.C.2
-
10
-
-
0012589396
-
Contamination of subsurface drainage systems during manure spreading
-
American Society of Agricultural Engineers, St. Joseph, MI.
-
Fleming, R.J., Bradshaw, S.H. (1992). Contamination of subsurface drainage systems during manure spreading. ASAE Paper No. 92-2618. American Society of Agricultural Engineers, St. Joseph, MI.
-
(1992)
ASAE Paper No. 92-2618
-
-
Fleming, R.J.1
Bradshaw, S.H.2
-
13
-
-
0031166059
-
Surface water quality impacts of tillage practices under liquid swine manure application
-
R.K. Gupta, R.P. Rudra, W.T. Dickinson, and G.J. Wall Surface water quality impacts of tillage practices under liquid swine manure application J. Am. Water Resour. Assoc. 33 1997 681 687
-
(1997)
J. Am. Water Resour. Assoc.
, vol.33
, pp. 681-687
-
-
Gupta, R.K.1
Rudra, R.P.2
Dickinson, W.T.3
Wall, G.J.4
-
16
-
-
0003905462
-
-
Jointly published by the USDA-National Agricultural Statistics Service, Washington, DC 20250 and Iowa Farm Bureau, West Des Moines, IA, 50266.
-
USDA-NASS, 1999. Iowa Agricultural Statistics. Jointly published by the USDA-National Agricultural Statistics Service, Washington, DC 20250 and Iowa Farm Bureau, West Des Moines, IA, 50266.
-
(1999)
Iowa Agricultural Statistics
-
-
-
17
-
-
20344364775
-
-
Annual Report (crop years 1994 through 1997) prepared for the Iowa Department of Agriculture and Land Stewardship (IDALS) by Iowa State University, Ames, IA, 50011.
-
Iowa State University, 1998. Agricultural drainage wells: research and demonstration project. Annual Report (crop years 1994 through 1997) prepared for the Iowa Department of Agriculture and Land Stewardship (IDALS) by Iowa State University, Ames, IA, 50011.
-
(1998)
Agricultural Drainage Wells: Research and Demonstration Project
-
-
-
18
-
-
0032941805
-
Water quality in Walnut Creek watershed: Herbicides and nitrate in surface waters
-
D.B. Jaynes, J.L. Hatfield, and D.W. Meek Water quality in Walnut Creek watershed: herbicides and nitrate in surface waters J. Environ. Qual. 28 1999 45 59
-
(1999)
J. Environ. Qual.
, vol.28
, pp. 45-59
-
-
Jaynes, D.B.1
Hatfield, J.L.2
Meek, D.W.3
-
19
-
-
0032174812
-
Environmental concerns about animal manure
-
A.W. Jongbloed, and N.P. Lenis Environmental concerns about animal manure J. Anim. Sci. 76 1998 2641 2648
-
(1998)
J. Anim. Sci.
, vol.76
, pp. 2641-2648
-
-
Jongbloed, A.W.1
Lenis, N.P.2
-
20
-
-
0016758634
-
Environmental implications of N fixation by soybeans
-
J.W. Johnson, E.F. Welch, and L.T. Kurtz Environmental implications of N fixation by soybeans J. Environ. Qual. 4 1975 303 306
-
(1975)
J. Environ. Qual.
, vol.4
, pp. 303-306
-
-
Johnson, J.W.1
Welch, E.F.2
Kurtz, L.T.3
-
21
-
-
0023983283
-
Tillage and split N-fertilizer effects on subsurface drainage water quality and crop yields
-
R.S. Kanwar, J.L. Baker, and D.G. Baker Tillage and split N-fertilizer effects on subsurface drainage water quality and crop yields Trans. ASAE 31 1988 453 460
-
(1988)
Trans. ASAE
, vol.31
, pp. 453-460
-
-
Kanwar, R.S.1
Baker, J.L.2
Baker, D.G.3
-
22
-
-
0001924324
-
Swine manure and N-management systems: Impact on groundwater quality
-
March 5-8, 1995, Kansas City, Missouri: ASAE, vol. 2
-
R.S. Kanwar, D.L. Karlen, C.A. Cambardella, and M.R. Cruse Swine manure and N-management systems: Impact on groundwater quality Clean water, clean environment, 21st century: team agriculture - working to protect water resources conference Proceedings March 5-8, 1995, Kansas City, Missouri: ASAE, vol. 2 1995 91 94
-
(1995)
Clean Water, Clean Environment, 21st Century: Team Agriculture - Working to Protect Water Resources Conference Proceedings
, pp. 91-94
-
-
Kanwar, R.S.1
Karlen, D.L.2
Cambardella, C.A.3
Cruse, M.R.4
-
23
-
-
0030982320
-
Ridge, moldboard, chisel, and no-till effects on tile water quality beneath two cropping system
-
R.S. Kanwar, T.S. Colvin, and D.L. Karlen Ridge, moldboard, chisel, and no-till effects on tile water quality beneath two cropping system J. Prod. Agric. 10 1997 227 234
-
(1997)
J. Prod. Agric.
, vol.10
, pp. 227-234
-
-
Kanwar, R.S.1
Colvin, T.S.2
Karlen, D.L.3
-
24
-
-
0000555727
-
An automated system for monitoring the quality and quantity of subsurface drain flow
-
R.S. Kanwar, D. Bjorneberg, and D. Baker An automated system for monitoring the quality and quantity of subsurface drain flow J. Agric Eng. Res. 73 1999 123 129
-
(1999)
J. Agric Eng. Res.
, vol.73
, pp. 123-129
-
-
Kanwar, R.S.1
Bjorneberg, D.2
Baker, D.3
-
25
-
-
0026363951
-
Twelve year and crop rotation effects on yields and soil chemical properties in northeast Iowa
-
D.L. Karlen, E.C. Berry, T.S. Colvin, and R.S. Kanwar Twelve year and crop rotation effects on yields and soil chemical properties in northeast Iowa Commun. Soil Sci. Plant Anal. 22 1991 1985 2003
-
(1991)
Commun. Soil Sci. Plant Anal.
, vol.22
, pp. 1985-2003
-
-
Karlen, D.L.1
Berry, E.C.2
Colvin, T.S.3
Kanwar, R.S.4
-
26
-
-
0032476180
-
Tillage system effects on 15-year carbon-based and simulated N budgets in a tile-drained Iowa field
-
D.L. Karlen, A. Kumar, R.S. Kanwar, C.A. Cambardella, and T.S. Colvin Tillage system effects on 15-year carbon-based and simulated N budgets in a tile-drained Iowa field Soil Till. Res. 48 1998 155 165
-
(1998)
Soil Till. Res.
, vol.48
, pp. 155-165
-
-
Karlen, D.L.1
Kumar, A.2
Kanwar, R.S.3
Cambardella, C.A.4
Colvin, T.S.5
-
27
-
-
0031239366
-
Long-term tillage and crop rotation effects on residual nitrate in the crop root zone and nitrate accumulation in the intermediate vadose zone
-
A. Katupitiya, D.E. Eisenhauer, R.B. Ferguson, R.F. Spalding, F.W. Roeth, and M.W. Bobier Long-term tillage and crop rotation effects on residual nitrate in the crop root zone and nitrate accumulation in the intermediate vadose zone Trans. ASAE 40 1997 1321 1327
-
(1997)
Trans. ASAE
, vol.40
, pp. 1321-1327
-
-
Katupitiya, A.1
Eisenhauer, D.E.2
Ferguson, R.B.3
Spalding, R.F.4
Roeth, F.W.5
Bobier, M.W.6
-
28
-
-
0000727079
-
Fertilizer nitrogen and crop rotation in relation to movement of nitrate nitrogen through soil profiles
-
R.J. Olsen, R.F. Hensler, O.J. Attoe, S.A. Witzel, and A.L. Peterson Fertilizer nitrogen and crop rotation in relation to movement of nitrate nitrogen through soil profiles Soil Sci. Soc. Am. Proc. 34 1970 448 452
-
(1970)
Soil Sci. Soc. Am. Proc.
, vol.34
, pp. 448-452
-
-
Olsen, R.J.1
Hensler, R.F.2
Attoe, O.J.3
Witzel, S.A.4
Peterson, A.L.5
-
29
-
-
0024830464
-
Nitrate contamination of groundwater in North America
-
F.J. Power, and J.S. Schepers Nitrate contamination of groundwater in North America Agric. Ecosys. Eviron. 26 1989 165 187
-
(1989)
Agric. Ecosys. Eviron.
, vol.26
, pp. 165-187
-
-
Power, F.J.1
Schepers, J.S.2
-
30
-
-
0036169103
-
Beyond science into policy: Gulf of Mexico Hypoxia and the Mississippi River
-
N.N. Rabalais, R.E. Turner, and D. Scavia Beyond science into policy: Gulf of Mexico Hypoxia and the Mississippi River Bioscience 52 2002 129 142
-
(2002)
Bioscience
, vol.52
, pp. 129-142
-
-
Rabalais, N.N.1
Turner, R.E.2
Scavia, D.3
-
32
-
-
0004282518
-
-
SAS Institute Inc., Cary, NC 27511-8000.
-
SAS Institute Inc., 1989. SAS/STAT User's Guide, vol. 2. SAS Institute Inc., Cary, NC 27511-8000.
-
(1989)
SAS/STAT User's Guide
, vol.2
-
-
-
33
-
-
0032206752
-
Water quality impacts of tile drains in shallow, sloping, structured soils as affected by manure application
-
C.A. Scott, L.D. Geohring, and M.F. Walter Water quality impacts of tile drains in shallow, sloping, structured soils as affected by manure application Appl. Eng. Agric. 14 1998 599 603
-
(1998)
Appl. Eng. Agric.
, vol.14
, pp. 599-603
-
-
Scott, C.A.1
Geohring, L.D.2
Walter, M.F.3
-
34
-
-
2142679200
-
An introduction to hogs in Iowa in fossil shells, glacial swells, piggy smells and drainage wells: The geology of the Mason City, Iowa, Area
-
Seigley, L., Quade, D.J., 1998. An introduction to hogs in Iowa in fossil shells, glacial swells, piggy smells and drainage wells: the geology of the Mason City, Iowa, Area. Geological Society of Iowa, Guidebook, vol. 65. pp. 47-50.
-
(1998)
Geological Society of Iowa, Guidebook
, vol.65
, pp. 47-50
-
-
Seigley, L.1
Quade, D.J.2
-
35
-
-
0032213118
-
Fecal bacteria survival and infiltration through a shallow agricultural soil: Timing and tillage effects
-
C.S. Stoddard, M.S. Coyne, and J.H. Grove Fecal bacteria survival and infiltration through a shallow agricultural soil: timing and tillage effects J. Environ. Qual. 27 1998 1516 1523
-
(1998)
J. Environ. Qual.
, vol.27
, pp. 1516-1523
-
-
Stoddard, C.S.1
Coyne, M.S.2
Grove, J.H.3
-
36
-
-
0036889121
-
Water and nitrate loss through tiles under a clay loam soil in Ontario after 42 years of consistent fertilization and crop rotation
-
C.S. Tan, C.F. Drury, W.D. Reynolds, P.H. Groenevelt, and H. Dadfar Water and nitrate loss through tiles under a clay loam soil in Ontario after 42 years of consistent fertilization and crop rotation Agric. Ecosyst. Environ. 93 2002 121 130
-
(2002)
Agric. Ecosyst. Environ.
, vol.93
, pp. 121-130
-
-
Tan, C.S.1
Drury, C.F.2
Reynolds, W.D.3
Groenevelt, P.H.4
Dadfar, H.5
-
37
-
-
0345499973
-
-
USDA-SCS in cooperation with Iowa Agric. and Home Econ. Exp. Stn., Coop. Ext. Serv., Iowa State University, Ames, IA.
-
USDA-SCS, 1982. Soil survey of Butler County, IA. USDA-SCS in cooperation with Iowa Agric. and Home Econ. Exp. Stn., Coop. Ext. Serv., Iowa State University, Ames, IA.
-
(1982)
Soil Survey of Butler County, IA
-
-
-
38
-
-
0005952973
-
-
USDA-SCS in cooperation with Iowa Agric. and Home Econ. Exp. Stn., Coop. Ext. Serv., Iowa State University, Ames, IA.
-
USDA-SCS, 1995. Soil survey of Floyd County, Iowa. USDA-SCS in cooperation with Iowa Agric. and Home Econ. Exp. Stn., Coop. Ext. Serv., Iowa State University, Ames, IA.
-
(1995)
Soil Survey of Floyd County, Iowa
-
-
|