-
1
-
-
0000917194
-
Herbage production and nitrogen accumulation by alfalfa and cicer milkvetch in the Southern Plains
-
Berg, W.A. 1990a. Herbage production and nitrogen accumulation by alfalfa and cicer milkvetch in the Southern Plains. Agron. J. 82:224-229.
-
(1990)
Agron. J.
, vol.82
, pp. 224-229
-
-
Berg, W.A.1
-
2
-
-
0025591343
-
Old World bluestem responses to nitrogen fertilization
-
Berg, W.A. 1990b. Old World bluestem responses to nitrogen fertilization. J. Range Mgt. 43:265-270.
-
(1990)
J. Range Mgt.
, vol.43
, pp. 265-270
-
-
Berg, W.A.1
-
3
-
-
0020918819
-
A simple method for determination of ammonium in semimicroKjeldahl analysis of soils and plant materials using a block digester
-
Bremner, J.M. and G.A. Breitenbeck. 1983. A simple method for determination of ammonium in semimicroKjeldahl analysis of soils and plant materials using a block digester. Commun. Soil Sci. Plant Anal. 14:905-913.
-
(1983)
Commun. Soil Sci. Plant Anal.
, vol.14
, pp. 905-913
-
-
Bremner, J.M.1
Breitenbeck, G.A.2
-
4
-
-
0008435991
-
Recommended nitrate-N tests
-
North Central Reg. Publ. No. 221. North Dakota Agric. Expt. Sta. Bull. 499 (revised). North Dakota State University, Fargo, ND
-
Gelderman, R.H. and P.E. Fixen. 1988. Recommended nitrate-N tests, pp. 10-11. In: Recommended Chemical Soil Test Procedures for the North Central Region. North Central Reg. Publ. No. 221. North Dakota Agric. Expt. Sta. Bull. 499 (revised). North Dakota State University, Fargo, ND.
-
(1988)
Recommended Chemical Soil Test Procedures for the North Central Region
, pp. 10-11
-
-
Gelderman, R.H.1
Fixen, P.E.2
-
5
-
-
0000022484
-
Quantifying the nitrogen contribution from alfalfa to soil and two succeeding crops using nitrogen-15
-
Harris, G.H. and O.B. Hesterman. 1990. Quantifying the nitrogen contribution from alfalfa to soil and two succeeding crops using nitrogen-15. Agron. J. 82:129-134.
-
(1990)
Agron. J.
, vol.82
, pp. 129-134
-
-
Harris, G.H.1
Hesterman, O.B.2
-
6
-
-
8544284033
-
Nitrogen recovery by crops that follow legumes
-
R.F. Barnes, P.R. Ball, R.W. Broughton, G.C. Marten, and D.J. Minson. (eds.), Proceedings of a USDA-ARS 1984 Trilateral Workshop. Palmerston North, NZ
-
Heichel, G.H. 1985. Nitrogen recovery by crops that follow legumes, pp. 183-190. In: R.F. Barnes, P.R. Ball, R.W. Broughton, G.C. Marten, and D.J. Minson. (eds.), Forage Legumes for Energy-Efficient Animal Production. Proceedings of a USDA-ARS 1984 Trilateral Workshop. Palmerston North, NZ.
-
(1985)
Forage Legumes for Energy-Efficient Animal Production
, pp. 183-190
-
-
Heichel, G.H.1
-
7
-
-
84970549186
-
Effects of duration of grazed lucerne on long-term yields and nitrogen uptake of subsequent wheat
-
Holford, I.C.R. 1980. Effects of duration of grazed lucerne on long-term yields and nitrogen uptake of subsequent wheat. Aust. J. Agric. Res. 31:239-250.
-
(1980)
Aust. J. Agric. Res.
, vol.31
, pp. 239-250
-
-
Holford, I.C.R.1
-
8
-
-
0025250863
-
Residual effects of alfalfa and bromegrass cropping on yields of wheat grown for 15 subsequent years
-
Hoyt, P.B. 1990. Residual effects of alfalfa and bromegrass cropping on yields of wheat grown for 15 subsequent years. Can. J. Soil Sci. 70:109-113.
-
(1990)
Can. J. Soil Sci.
, vol.70
, pp. 109-113
-
-
Hoyt, P.B.1
-
9
-
-
0002574169
-
How much nitrogen do legumes fix?
-
LaRue, T.A. and T.G. Patterson. 1981. How much nitrogen do legumes fix? Adv. Agron. 34:15-38.
-
(1981)
Adv. Agron.
, vol.34
, pp. 15-38
-
-
LaRue, T.A.1
Patterson, T.G.2
-
10
-
-
85104289764
-
Accounting for nitrogen in nonequilibrium soil-crop systems
-
R.F. Follet, D.R. Keeney, and R.M. Cruse (eds.), Soil Science Society of America, Inc., Madison, WI
-
Schepers, J.S. and A.R. Mosier. 1991. Accounting for nitrogen in nonequilibrium soil-crop systems, pp. 125-138. In: R.F. Follet, D.R. Keeney, and R.M. Cruse (eds.), Managing Nitrogen for Goundwater Quality and Farm Profit Ability. Soil Science Society of America, Inc., Madison, WI.
-
(1991)
Managing Nitrogen for Goundwater Quality and Farm Profit Ability
, pp. 125-138
-
-
Schepers, J.S.1
Mosier, A.R.2
-
11
-
-
8244234249
-
Soil testing methods used at Colorado State University Soil Testing Laboratory
-
Colorado State University Experiment Station, Fort Collins, CO
-
Soltanpour, P.N. and S.M. Workman. 1981. Soil testing methods used at Colorado State University Soil Testing Laboratory. Colorado State University Expt. Sta. Tech. Bull. 142. Colorado State University Experiment Station, Fort Collins, CO.
-
(1981)
Colorado State University Expt. Sta. Tech. Bull.
, vol.142
-
-
Soltanpour, P.N.1
Workman, S.M.2
-
13
-
-
0042808037
-
Effect of rotations, tillage methods, and N fertilization on winter wheat production
-
Tucker, B.B., M.B. Cox, and H.V. Eck. 1971. Effect of rotations, tillage methods, and N fertilization on winter wheat production. Agron. J. 63:699-702.
-
(1971)
Agron. J.
, vol.63
, pp. 699-702
-
-
Tucker, B.B.1
Cox, M.B.2
Eck, H.V.3
-
14
-
-
85103025132
-
Measurement of biological dinitrogen fixation in the field
-
R-D. Hauck and R.W. Weaver (eds.), ASA Special Publ. 18. Soil Science Society of America, Inc., Madison, WI
-
Weaver, R. W. 1986. Measurement of biological dinitrogen fixation in the field, pp. 1-10. In: R-D. Hauck and R.W. Weaver (eds.), Field Measurement of Dinitrogen Fixation and Denitrification. ASA Special Publ. 18. Soil Science Society of America, Inc., Madison, WI.
-
(1986)
Field Measurement of Dinitrogen Fixation and Denitrification
, pp. 1-10
-
-
Weaver, R.W.1
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