
TY  - JOUR
A1  - Bolland, MDA 
A1  - Baker, MJ 
T1  - High phosphorus concentration in <I>Trifolium balansae</I> and <I>Medicago polymorpha</I> seed increases in herbage and seed yields in the field
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 1989
VL  - 29
IS  - 6
SP  - 791
EP  - 795
KW  - 
UR  - https://doi.org/10.1071/EA9890791 
N2  - Seed of Trifolium balansae and Medicago polymorpha, of the same size (mean &#177; s.d., T. balansae 0.8 &#177; 0.01 mglseed, M. polymorpha 3.6 &#177; 0.05 mg/seed) but with increasing phosphorus (P) concentration in the seed (T. balansae 0.34 to 0.63% P, M. polymorpha 0.40 to 0.64% P), were sown in field experiments as singlestrain, dense, ungrazed swards on 2 different soil types (a sand and a lateritic gravel sand) in south-western Australia. Different amounts of superphosphate were drilled with the seed (5-40 kg P/ha for the sand, and 15-100 kg P/ha for the lateritic gravel sand). Increasing P concentration in seed increased yields of dried herbage measured at each harvest, and also increased seed yields (measured for M. polymorpha only). Increasing P concentration in the seed increased the effectiveness of superphosphate drilled with the seed, so that less fertiliser was required to produce the same yield as P concentration in the seed increased. 
ER  -

