Sequential extraction of nine trace elements from sludge-amended soils S. El-DemerdasheM. S. A. DahdohF. A. Hassan OriginalPaper Pages: 77 - 85
Using hydrophilic polymers to improve uptake of manganese fertilizers by soybeans Robert L. Mikkelsen OriginalPaper Pages: 87 - 92
Mineral nutrition of slash pine in subtropical australia. I. stand growth response to fertilization Z. H. XuJ. A. SimpsonD. O. Osborne OriginalPaper Pages: 93 - 100
Mineral nutrition of slash pine in subtropical Australia. II. foliar nutrient response to fertilization Z. H. XuJ. A. SimpsonD. O. Osborne OriginalPaper Pages: 101 - 107
Mineral nutrition of slash pine in subtropical Australia. III. Relationships between foliar P concentration and stand growth Z. H. XuJ. A. SimpsonD. O. Osborne OriginalPaper Pages: 109 - 115
Alkylated ureas: mineralization and evaluation as N sources Praveen-KumarR. Brumme OriginalPaper Pages: 117 - 124
Production of phosphoric acid with low content of impurities Ekaterinia Iv. TodorovaIvan P. Dombalov OriginalPaper Pages: 125 - 128
Effectiveness of rock phosphate, coastal superphosphate and single superphosphate for pasture on deep sandy soils M. D. A. BollandM. F. ClarkeJ. S. Yeates OriginalPaper Pages: 129 - 143
Potential of eppawala apatite as a directly applied low-cost fertilizer for rice production in Sri Lanka K. DahanayakeM. P. K. RatnayakeP. A. Sunil OriginalPaper Pages: 145 - 150
Long-term residual value of North Carolina and Queensland rock phosphates compared with triple superphosphate M. D. A. BollandR. J. Gilkes OriginalPaper Pages: 151 - 158
Electrochemical properties of apatite and other minerals of Zambian phosphate ores in aqueous solution S. SimukangaW. C. Lombe OriginalPaper Pages: 159 - 166