Free amino acids in the plasma of poults used as an indicator of possible limiting amino acids in presently available protein sources [Protein quality] von Dunkelgod, K E, Winkleman, G E

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Nitrogen benefits from four green-manure legumes in dryland cropping systems von Biederbeck, V.O, Bouman, O.T, Campbell, C.A, Bailey, L.D, Winkleman, G.E

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Nitrogen and phosphorus uptake, translocation, and utilization efficiency of wheat in relation to environment and cultivar yield and protein levels von Clarke, J.M, Campbell, C.A, Cutforth, H.W, DePauw, R.M, Winkleman, G.E

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Influence of legumes and fertilization of deep distribution of available phosphorus (Olsen-P) in a thin black chernozemic soil von Campbell, C.A, Lafond, G.P, Biederbeck, V.O, Winkleman, G.E

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Nitrate accumulation in Altai wild ryegrass , Rusian wild ryegrass , and crested wheatgrass von Lawrence, T, Winkleman, G.E, Warder, F.G

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Effect of nitrogen, temperature, growth stage and duration of moisture stress on yield components and protein content of Manitou spring wheat von Campbell, C.A, Davidson, H.R, Winkleman, G.E

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Availability of residual fertilizer phosphorus as measured by bromegrass-alfalfa dry matter and phosphorus yield and by extractable soil phosphorus von Holt, N.W, Winkleman, G.E

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chemical composition of Russian and Altai wild ryegrass and crested wheatgrass as influenced by N fertilization and date of harvest von Lawrence, T, Winkleman, G.E, Warder, F.G

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productivity and chemical composition of Altai wild ryegrass as influenced by time of irrigation and time and rate of N fertilization von Lawrence, T, Korven, H.C, Winkleman, G.E, Warder, F.G

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