TY  - JA
AU  - Jones,J.B.
AU  - McElhannon,W.S.
AU  - Mills,H.A.
TI  - Changing nitrogen source on the yield and nitrogen content of soybeans
SN  - 1573-5036
U1  - 83-889623 
PY  - 1982///
KW  - Plant production
KW  - Soybean glycine max
N1  - 18 ref.; Summary (En); Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0032-079X
N2  - Soybean plants were grown in nutrient culture solutions containing 150 ppm of N either as an equal concentration of NH(, 4)('+) or NO(,3)('-), or all NO(,3)('-). At the R2 stage of growth for some plants, the N form was changed to either all NO(,3)('-) or all NH(,4)('+), but at the same total N concentration as before. Highest seed yield was obtained with all NO(,3)('-) over the entire growth period, the poorest when the N form was switched from an equal ratio of NH(,4)('+) and NO(,3)('-) to all NH(,4)('+) at the R2 stage. Kjeldahl N concentrations in the plant leaves and seed were highest when NH(,4)('+) was part or all of the N source in the
T2  - Plant and Soil
ER  -