Volume 41, Issue 3 | Nutrient Cycling in Agroecosystems

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Volume 41, Issue 3

January 1995

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8 articles in this issue

Future directions for agricultural phosphorus research
F. J. Sikora
P. M. Giordano
OriginalPaper Pages: 167 - 178
Soil testing for available phosphorus in soils where phosphate rock-based fertilizers are used
R. G. Menon
S. H. Chien
OriginalPaper Pages: 179 - 187
³²P isotopic techniques for evaluating the agronomic effectiveness of rock phosphate materials
F. Zapata
H. Axmann
OriginalPaper Pages: 189 - 195
Agronomic evaluation of modified phosphate rock products
S. H. Chien
R. G. Menon
OriginalPaper Pages: 197 - 209
Agronomic evaluation of fertilizers with special reference to natural and modified phosphate rock
E. F. Casanova
OriginalPaper Pages: 211 - 218
Cowpea varietal differences in uptake of phosphorus from Gafsa phosphate rock in a low-P Ultisol
A. B. Ankomah
F. Zapata
H. Axmann
OriginalPaper Pages: 219 - 225
Factors affecting the agronomic effectiveness of phosphate rock for direct application
S. H. Chien
R. G. Menon
OriginalPaper Pages: 227 - 234
Evaluation of the agronomic effectiveness of natural and partially acidulated phosphate rocks in several soils using³²P isotopic dilution techniques
N. Kato
F. Zapata
H. Axmann
OriginalPaper Pages: 235 - 242