| nr |
titel |
auteur |
tijdschrift |
jaar |
jaarg. |
afl. |
pagina('s) |
type |
| 1 |
An automated colorimetric method for the determination of urease activity in soil and plant material
|
Searle, P. L.
|
|
1976
|
7 |
4 |
p. 365-374
|
artikel
|
| 2 |
Determination of trace amounts of phosphate in water extracts of soils
|
Gibson, A. R.
|
|
1976
|
7 |
4 |
p. 427-436
|
artikel
|
| 3 |
Editorial board
|
|
|
1976
|
7 |
4 |
p. 1
|
artikel
|
| 4 |
Effect of nitrogen, phosphorus and potassium on yields, protein cohtents and otrient levels in soybeans, field peas and fababeans
|
Bishop, R. F.
|
|
1976
|
7 |
4 |
p. 387-404
|
artikel
|
| 5 |
Effect of poultry manure additions on the extractability of an added metal
|
Warman, P. R.
|
|
1976
|
7 |
4 |
p. 405-414
|
artikel
|
| 6 |
Non-uniformity of 15n labelling in plant material
|
Moore, A. W.
|
|
1976
|
7 |
4 |
p. 335-344
|
artikel
|
| 7 |
P fertility and mixed salinity on growth and Ca, Mg, Na, P and Cl concentrations of tomato, corn, and sudan grass grown in sand culture
|
Patel, P.
|
|
1976
|
7 |
4 |
p. 375-385
|
artikel
|
| 8 |
Pod and leaf photosynthesis and disease incidence in soybean (Glycine max (L.) Merr.) with potassium fertilization
|
Andrews, A. K.
|
|
1976
|
7 |
4 |
p. 345-363
|
artikel
|
| 9 |
Rapid manual determination of sulfur and phosphorus in plant material
|
Quin, B. F.
|
|
1976
|
7 |
4 |
p. 415-426
|
artikel
|
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