
TY  - JOUR
A1  - Cowie, AL 
A1  - Jessop, RS 
A1  - MacLeod, DA 
A1  - Davis, GJ 
T1  - Effect of soil nitrate on the growth and nodulation of lupins (<I>Lupinus angustifolius</I> and<I> L. albus</I>)
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 1990
VL  - 30
IS  - 5
SP  - 655
EP  - 659
KW  - 
UR  - https://doi.org/10.1071/EA9900655 
N2  - The effect of increasing external nitrate (NO-3) concentration on the nodulation of Lupinus albus and L. angustifolius lines was examined in 2 sand culture experiments. In the first experiment 4 lines, 3 L. albus and 1 L. angustifolius, were grown at NO-3 concentrations of 0, 2, 8, 16, and 30 mmol/L for 49 days. Increasing the NOT concentration reduced nodule weight in all varieties to a similar extent. In a second experiment, 18 L. angustifolius lines were grown at NO-3 concentrations of 2 and 8 mmol/L for 49 days. The ratio of nodule weights at the 8 and 2 mmol/L NO-3 treatments varied widely, from 23 to 71%, between the lines. There appears to be potential for selection of L. angustifolius varieties able to maintain N2 fixation at increased levels of soil N. 
ER  -

